dropbear: keyimport.c annotate

annotate keyimport.c @ 984:d46e7f613157

Handle invalid agent keys by skipping rather than exiting. My agent exposes both conventional keys and certs ([email protected]) and I want dropbear to be able to use the former.

author	Catalin Patulea <cat@vv.carleton.ca>
date	Thu, 01 Jan 2015 17:47:46 -0500
parents	25692c60479e
children	4f65c867fc99

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 * Based on PuTTY's import.c for importing/exporting OpenSSH and SSH.com
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 * keyfiles.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * Modifications copyright 2003 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * PuTTY is copyright 1997-2003 Simon Tatham.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * Portions copyright Robert de Bath, Joris van Rantwijk, Delian
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 * Delchev, Andreas Schultz, Jeroen Massar, Wez Furlong, Nicolas Barry,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * Justin Bradford, and CORE SDI S.A.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 * Permission is hereby granted, free of charge, to any person
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 * obtaining a copy of this software and associated documentation files
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * (the "Software"), to deal in the Software without restriction,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 * including without limitation the rights to use, copy, modify, merge,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * publish, distribute, sublicense, and/or sell copies of the Software,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * and to permit persons to whom the Software is furnished to do so,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * subject to the following conditions:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * The above copyright notice and this permission notice shall be
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 * included in all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 * NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 #include "keyimport.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 #include "bignum.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 #include "buffer.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 #include "dbutil.h"
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	37 #include "ecc.h"
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	38
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	39 static const unsigned char OID_SEC256R1_BLOB[] = {0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07};
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	40 static const unsigned char OID_SEC384R1_BLOB[] = {0x2b, 0x81, 0x04, 0x00, 0x22};
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	41 static const unsigned char OID_SEC521R1_BLOB[] = {0x2b, 0x81, 0x04, 0x00, 0x23};
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 #define PUT_32BIT(cp, value) do { \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 (cp)[3] = (unsigned char)(value); \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 (cp)[2] = (unsigned char)((value) >> 8); \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 (cp)[1] = (unsigned char)((value) >> 16); \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 (cp)[0] = (unsigned char)((value) >> 24); } while (0)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 #define GET_32BIT(cp) \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 (((unsigned long)(unsigned char)(cp)[0] << 24) \| \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 ((unsigned long)(unsigned char)(cp)[1] << 16) \| \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 ((unsigned long)(unsigned char)(cp)[2] << 8) \| \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 ((unsigned long)(unsigned char)(cp)[3]))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55 static int openssh_encrypted(const char *filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56 static sign_key openssh_read(const char filename, char *passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57 static int openssh_write(const char filename, sign_key key,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58 char *passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60 static int dropbear_write(const charfilename, sign_key key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61 static sign_key dropbear_read(const char filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63 #if 0
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 static int sshcom_encrypted(const char filename, char *comment);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65 static struct ssh2_userkey sshcom_read(const char filename, char *passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 static int sshcom_write(const char filename, struct ssh2_userkey key,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 char *passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70 int import_encrypted(const char* filename, int filetype) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 if (filetype == KEYFILE_OPENSSH) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73 return openssh_encrypted(filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 #if 0
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 } else if (filetype == KEYFILE_SSHCOM) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76 return sshcom_encrypted(filename, NULL);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	78 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79 return 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 sign_key import_read(const char filename, char *passphrase, int filetype) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 if (filetype == KEYFILE_OPENSSH) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85 return openssh_read(filename, passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 } else if (filetype == KEYFILE_DROPBEAR) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 return dropbear_read(filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88 #if 0
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 } else if (filetype == KEYFILE_SSHCOM) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90 return sshcom_read(filename, passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 int import_write(const char filename, sign_key key, char *passphrase,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 int filetype) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99 if (filetype == KEYFILE_OPENSSH) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 return openssh_write(filename, key, passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 } else if (filetype == KEYFILE_DROPBEAR) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 return dropbear_write(filename, key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 #if 0
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104 } else if (filetype == KEYFILE_SSHCOM) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105 return sshcom_write(filename, key, passphrase);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	106 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108 return 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	109 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 static sign_key dropbear_read(const char filename) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113 buffer * buf = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114 sign_key *ret = NULL;
846 b298bb438625 refactor key generation, make it generate as required. Matt Johnston <matt@ucc.asn.au> parents: 845 diff changeset	115 enum signkey_type type;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	116
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	117 buf = buf_new(MAX_PRIVKEY_SIZE);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	118 if (buf_readfile(buf, filename) == DROPBEAR_FAILURE) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	119 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	122 buf_setpos(buf, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 ret = new_sign_key();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125 type = DROPBEAR_SIGNKEY_ANY;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 if (buf_get_priv_key(buf, ret, &type) == DROPBEAR_FAILURE){
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 buf_free(buf);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	131 ret->type = type;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	132
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	134
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 if (buf) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137 buf_free(buf);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 if (ret) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140 sign_key_free(ret);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 /* returns 0 on fail, 1 on success */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 static int dropbear_write(const charfilename, sign_key key) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 buffer * buf;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 FILE*fp;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150 int len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151 int ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	153 buf = buf_new(MAX_PRIVKEY_SIZE);
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	154 buf_put_priv_key(buf, key, key->type);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155
87 680a0bc9df0a Some small fixes for unused vars, and old messages Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	156 fp = fopen(filename, "w");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157 if (!fp) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 ret = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 goto out;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 buf_setpos(buf, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 do {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 len = fwrite(buf_getptr(buf, buf->len - buf->pos),
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165 1, buf->len - buf->pos, fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 buf_incrpos(buf, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167 } while (len > 0 && buf->len != buf->pos);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168
256 ac890087b8c1 * keyimport.c: fclose() the key file to make sure data gets written Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	169 fclose(fp);
ac890087b8c1 * keyimport.c: fclose() the key file to make sure data gets written Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	170
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	171 if (buf->pos != buf->len) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	172 ret = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 ret = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176 out:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	177 buf_free(buf);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 /* ----------------------------------------------------------------------
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 * Helper routines. (The base64 ones are defined in sshpubk.c.)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186 #define isbase64(c) ( ((c) >= 'A' && (c) <= 'Z') \|\| \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	187 ((c) >= 'a' && (c) <= 'z') \|\| \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 ((c) >= '0' && (c) <= '9') \|\| \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 (c) == '+' \|\| (c) == '/' \|\| (c) == '=' \
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190 )
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192 /* cpl has to be less than 100 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 static void base64_encode_fp(FILE * fp, unsigned char *data,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 int datalen, int cpl)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196 char out[100];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 int n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198 unsigned long outlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199 int rawcpl;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	200 rawcpl = cpl * 3 / 4;
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	201 dropbear_assert((unsigned int)cpl < sizeof(out));
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 while (datalen > 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204 n = (datalen < rawcpl ? datalen : rawcpl);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205 outlen = sizeof(out);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206 base64_encode(data, n, out, &outlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207 data += n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	208 datalen -= n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209 fwrite(out, 1, outlen, fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210 fputc('\n', fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 * Read an ASN.1/BER identifier and length pair.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 * Flags are a combination of the #defines listed below.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	218 * Returns -1 if unsuccessful; otherwise returns the number of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219 * bytes used out of the source data.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 /* ASN.1 tag classes. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 #define ASN1_CLASS_UNIVERSAL (0 << 6)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224 #define ASN1_CLASS_APPLICATION (1 << 6)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 #define ASN1_CLASS_CONTEXT_SPECIFIC (2 << 6)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 #define ASN1_CLASS_PRIVATE (3 << 6)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227 #define ASN1_CLASS_MASK (3 << 6)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229 /* Primitive versus constructed bit. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 #define ASN1_CONSTRUCTED (1 << 5)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 static int ber_read_id_len(void *source, int sourcelen,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 int id, int length, int *flags)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235 unsigned char p = (unsigned char ) source;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237 if (sourcelen == 0)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 return -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 flags = (p & 0xE0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 if ((*p & 0x1F) == 0x1F) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 *id = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 while (*p & 0x80) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 id = (id << 7) \| (*p & 0x7F);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245 p++, sourcelen--;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	246 if (sourcelen == 0)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247 return -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 id = (id << 7) \| (*p & 0x7F);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 p++, sourcelen--;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252 id = p & 0x1F;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253 p++, sourcelen--;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	256 if (sourcelen == 0)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	257 return -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	258
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259 if (*p & 0x80) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260 int n = *p & 0x7F;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261 p++, sourcelen--;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262 if (sourcelen < n)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 return -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264 *length = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 while (n--)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266 length = (length << 8) \| (*p++);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267 sourcelen -= n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 length = p;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 p++, sourcelen--;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	271 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 return p - (unsigned char *) source;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	274 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	275
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277 * Write an ASN.1/BER identifier and length pair. Returns the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 * number of bytes consumed. Assumes dest contains enough space.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279 * Will avoid writing anything if dest is NULL, but still return
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280 * amount of space required.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282 static int ber_write_id_len(void *dest, int id, int length, int flags)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284 unsigned char d = (unsigned char )dest;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285 int len = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287 if (id <= 30) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 * Identifier is one byte.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 len++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 if (d) *d++ = id \| flags;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 int n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296 * Identifier is multiple bytes: the first byte is 11111
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	297 * plus the flags, and subsequent bytes encode the value of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	298 * the identifier, 7 bits at a time, with the top bit of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299 * each byte 1 except the last one which is 0.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	300 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301 len++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 if (d) *d++ = 0x1F \| flags;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	303 for (n = 1; (id >> (7*n)) > 0; n++)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	304 continue; /* count the bytes */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	305 while (n--) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	306 len++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	307 if (d) d++ = (n ? 0x80 : 0) \| ((id >> (7n)) & 0x7F);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	308 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	310
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	311 if (length < 128) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313 * Length is one byte.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	314 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	315 len++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	316 if (d) *d++ = length;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	317 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	318 int n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	319 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320 * Length is multiple bytes. The first is 0x80 plus the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 * number of subsequent bytes, and the subsequent bytes
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322 * encode the actual length.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	324 for (n = 1; (length >> (8*n)) > 0; n++)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	325 continue; /* count the bytes */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	326 len++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 if (d) *d++ = 0x80 \| n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328 while (n--) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 len++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 if (d) d++ = (length >> (8n)) & 0xFF;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334 return len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	335 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	336
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	337
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	338 /* Simple structure to point to an mp-int within a blob. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	339 struct mpint_pos { void *start; int bytes; };
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	340
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 /* ----------------------------------------------------------------------
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	342 * Code to read and write OpenSSH private keys.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	343 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	344
793 70625eed40c9 A bit of work on ecdsa for host/auth keys Matt Johnston <matt@ucc.asn.au> parents: 491 diff changeset	345 enum { OSSH_DSA, OSSH_RSA, OSSH_EC };
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	346 struct openssh_key {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	347 int type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	348 int encrypted;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	349 char iv[32];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	350 unsigned char *keyblob;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351 unsigned int keyblob_len, keyblob_size;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	352 };
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	353
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	354 static struct openssh_key load_openssh_key(const char filename)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	355 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356 struct openssh_key *ret;
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 256 diff changeset	357 FILE *fp = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	358 char buffer[256];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	359 char errmsg = NULL, p = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	360 int headers_done;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	361 unsigned long len, outlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	363 ret = (struct openssh_key*)m_malloc(sizeof(struct openssh_key));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	364 ret->keyblob = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	365 ret->keyblob_len = ret->keyblob_size = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	366 ret->encrypted = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367 memset(ret->iv, 0, sizeof(ret->iv));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	368
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	369 if (strlen(filename) == 1 && filename[0] == '-') {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	370 fp = stdin;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	372 fp = fopen(filename, "r");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	373 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	374 if (!fp) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	375 errmsg = "Unable to open key file";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	376 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	377 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	378 if (!fgets(buffer, sizeof(buffer), fp) \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379 0 != strncmp(buffer, "-----BEGIN ", 11) \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	380 0 != strcmp(buffer+strlen(buffer)-17, "PRIVATE KEY-----\n")) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381 errmsg = "File does not begin with OpenSSH key header";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	382 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	383 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	384 if (!strcmp(buffer, "-----BEGIN RSA PRIVATE KEY-----\n"))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	385 ret->type = OSSH_RSA;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	386 else if (!strcmp(buffer, "-----BEGIN DSA PRIVATE KEY-----\n"))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	387 ret->type = OSSH_DSA;
793 70625eed40c9 A bit of work on ecdsa for host/auth keys Matt Johnston <matt@ucc.asn.au> parents: 491 diff changeset	388 else if (!strcmp(buffer, "-----BEGIN EC PRIVATE KEY-----\n"))
70625eed40c9 A bit of work on ecdsa for host/auth keys Matt Johnston <matt@ucc.asn.au> parents: 491 diff changeset	389 ret->type = OSSH_EC;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	390 else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	391 errmsg = "Unrecognised key type";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	393 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	394
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	395 headers_done = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	396 while (1) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	397 if (!fgets(buffer, sizeof(buffer), fp)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	398 errmsg = "Unexpected end of file";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	399 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	400 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	401 if (0 == strncmp(buffer, "-----END ", 9) &&
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	402 0 == strcmp(buffer+strlen(buffer)-17, "PRIVATE KEY-----\n"))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403 break; /* done */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	404 if ((p = strchr(buffer, ':')) != NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 if (headers_done) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	406 errmsg = "Header found in body of key data";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	408 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	409 *p++ = '\0';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410 while (p && isspace((unsigned char)p)) p++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	411 if (!strcmp(buffer, "Proc-Type")) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	412 if (p[0] != '4' \|\| p[1] != ',') {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413 errmsg = "Proc-Type is not 4 (only 4 is supported)";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	414 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	415 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 p += 2;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	417 if (!strcmp(p, "ENCRYPTED\n"))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	418 ret->encrypted = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	419 } else if (!strcmp(buffer, "DEK-Info")) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	420 int i, j;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	421
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	422 if (strncmp(p, "DES-EDE3-CBC,", 13)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	423 errmsg = "Ciphers other than DES-EDE3-CBC not supported";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	424 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	425 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	426 p += 13;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	427 for (i = 0; i < 8; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	428 if (1 != sscanf(p, "%2x", &j))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	429 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 ret->iv[i] = j;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	431 p += 2;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	432 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	433 if (i < 8) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	434 errmsg = "Expected 16-digit iv in DEK-Info";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	435 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	436 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	437 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	438 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	439 headers_done = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	440 len = strlen(buffer);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	441 outlen = len*4/3;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442 if (ret->keyblob_len + outlen > ret->keyblob_size) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	443 ret->keyblob_size = ret->keyblob_len + outlen + 256;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	444 ret->keyblob = (unsigned char*)m_realloc(ret->keyblob,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	445 ret->keyblob_size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	446 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	447 outlen = ret->keyblob_size - ret->keyblob_len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	448 if (base64_decode(buffer, len,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	449 ret->keyblob + ret->keyblob_len, &outlen) != CRYPT_OK){
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	450 errmsg = "Error decoding base64";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	451 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	452 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	453 ret->keyblob_len += outlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	454 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	455 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	456
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	457 if (ret->keyblob_len == 0 \|\| !ret->keyblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	458 errmsg = "Key body not present";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	459 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	460 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	461
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	462 if (ret->encrypted && ret->keyblob_len % 8 != 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	463 errmsg = "Encrypted key blob is not a multiple of cipher block size";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	464 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	465 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	466
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	467 memset(buffer, 0, sizeof(buffer));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	468 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	469
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	470 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	471 memset(buffer, 0, sizeof(buffer));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	472 if (ret) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	473 if (ret->keyblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	474 memset(ret->keyblob, 0, ret->keyblob_size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	475 m_free(ret->keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	476 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	477 memset(&ret, 0, sizeof(ret));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	478 m_free(ret);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	479 }
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 256 diff changeset	480 if (fp) {
454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 256 diff changeset	481 fclose(fp);
454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 256 diff changeset	482 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	483 if (errmsg) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	484 fprintf(stderr, "Error: %s\n", errmsg);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	485 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	486 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	487 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	488
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	489 static int openssh_encrypted(const char *filename)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	490 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	491 struct openssh_key *key = load_openssh_key(filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	492 int ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	493
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	494 if (!key)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	495 return 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	496 ret = key->encrypted;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	497 memset(key->keyblob, 0, key->keyblob_size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	498 m_free(key->keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	499 memset(&key, 0, sizeof(key));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	500 m_free(key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	501 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	502 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	503
846 b298bb438625 refactor key generation, make it generate as required. Matt Johnston <matt@ucc.asn.au> parents: 845 diff changeset	504 static sign_key openssh_read(const char filename, char * UNUSED(passphrase))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	505 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	506 struct openssh_key *key;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	507 unsigned char *p;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	508 int ret, id, len, flags;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	509 int i, num_integers = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	510 sign_key *retval = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	511 char *errmsg;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	512 char *modptr = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	513 int modlen = -9999;
846 b298bb438625 refactor key generation, make it generate as required. Matt Johnston <matt@ucc.asn.au> parents: 845 diff changeset	514 enum signkey_type type;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	515
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	516 sign_key *retkey;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	517 buffer * blobbuf = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	518
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	519 retkey = new_sign_key();
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	520
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	521 key = load_openssh_key(filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	522
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	523 if (!key)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	524 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	525
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	526 if (key->encrypted) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	527 errmsg = "encrypted keys not supported currently";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	528 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	529 #if 0
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	530 /* matt TODO */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	531 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	532 * Derive encryption key from passphrase and iv/salt:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	533 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	534 * - let block A equal MD5(passphrase \|\| iv)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	535 * - let block B equal MD5(A \|\| passphrase \|\| iv)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	536 * - block C would be MD5(B \|\| passphrase \|\| iv) and so on
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	537 * - encryption key is the first N bytes of A \|\| B
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	538 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	539 struct MD5Context md5c;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	540 unsigned char keybuf[32];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	541
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	542 MD5Init(&md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	543 MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	544 MD5Update(&md5c, (unsigned char *)key->iv, 8);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	545 MD5Final(keybuf, &md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	546
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	547 MD5Init(&md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	548 MD5Update(&md5c, keybuf, 16);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	549 MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	550 MD5Update(&md5c, (unsigned char *)key->iv, 8);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	551 MD5Final(keybuf+16, &md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	552
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	553 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	554 * Now decrypt the key blob.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	555 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	556 des3_decrypt_pubkey_ossh(keybuf, (unsigned char *)key->iv,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	557 key->keyblob, key->keyblob_len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	558
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	559 memset(&md5c, 0, sizeof(md5c));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	560 memset(keybuf, 0, sizeof(keybuf));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	561 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	562 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	563
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	564 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	565 * Now we have a decrypted key blob, which contains an ASN.1
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	566 * encoded private key. We must now untangle the ASN.1.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	567 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	568 * We expect the whole key blob to be formatted as a SEQUENCE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	569 * (0x30 followed by a length code indicating that the rest of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	570 * the blob is part of the sequence). Within that SEQUENCE we
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	571 * expect to see a bunch of INTEGERs. What those integers mean
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	572 * depends on the key type:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	573 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	574 * - For RSA, we expect the integers to be 0, n, e, d, p, q,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	575 * dmp1, dmq1, iqmp in that order. (The last three are d mod
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	576 * (p-1), d mod (q-1), inverse of q mod p respectively.)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	577 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	578 * - For DSA, we expect them to be 0, p, q, g, y, x in that
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	579 * order.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	580 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	581
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	582 p = key->keyblob;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	583
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	584 /* Expect the SEQUENCE header. Take its absence as a failure to decrypt. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	585 ret = ber_read_id_len(p, key->keyblob_len, &id, &len, &flags);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	586 p += ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	587 if (ret < 0 \|\| id != 16) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	588 errmsg = "ASN.1 decoding failure - wrong password?";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	589 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	590 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	591
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	592 /* Expect a load of INTEGERs. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	593 if (key->type == OSSH_RSA)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	594 num_integers = 9;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	595 else if (key->type == OSSH_DSA)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	596 num_integers = 6;
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	597 else if (key->type == OSSH_EC)
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	598 num_integers = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	599
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	600 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	601 * Space to create key blob in.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	602 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	603 blobbuf = buf_new(3000);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	604
935 25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	605 #ifdef DROPBEAR_DSS
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	606 if (key->type == OSSH_DSA) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	607 buf_putstring(blobbuf, "ssh-dss", 7);
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	608 retkey->type = DROPBEAR_SIGNKEY_DSS;
935 25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	609 }
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	610 #endif
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	611 #ifdef DROPBEAR_RSA
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	612 if (key->type == OSSH_RSA) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	613 buf_putstring(blobbuf, "ssh-rsa", 7);
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	614 retkey->type = DROPBEAR_SIGNKEY_RSA;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	615 }
935 25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	616 #endif
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	617
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	618 for (i = 0; i < num_integers; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	619 ret = ber_read_id_len(p, key->keyblob+key->keyblob_len-p,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	620 &id, &len, &flags);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	621 p += ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	622 if (ret < 0 \|\| id != 2 \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	623 key->keyblob+key->keyblob_len-p < len) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	624 errmsg = "ASN.1 decoding failure";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	625 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	626 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	627
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	628 if (i == 0) {
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	629 /* First integer is a version indicator */
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	630 int expected;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	631 switch (key->type) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	632 case OSSH_RSA:
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	633 case OSSH_DSA:
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	634 expected = 0;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	635 break;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	636 case OSSH_EC:
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	637 expected = 1;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	638 break;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	639 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	640 if (len != 1 \|\| p[0] != expected) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	641 errmsg = "Version number mismatch";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	642 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	643 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	644 } else if (key->type == OSSH_RSA) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	645 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	646 * OpenSSH key order is n, e, d, p, q, dmp1, dmq1, iqmp
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	647 * but we want e, n, d, p, q
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	648 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	649 if (i == 1) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	650 /* Save the details for after we deal with number 2. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	651 modptr = (char *)p;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	652 modlen = len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	653 } else if (i >= 2 && i <= 5) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	654 buf_putstring(blobbuf, p, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	655 if (i == 2) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	656 buf_putstring(blobbuf, modptr, modlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	657 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	658 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	659 } else if (key->type == OSSH_DSA) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	660 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	661 * OpenSSH key order is p, q, g, y, x,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	662 * we want the same.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	663 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	664 buf_putstring(blobbuf, p, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	665 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	666
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	667 /* Skip past the number. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	668 p += len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	669 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	670
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	671 #ifdef DROPBEAR_ECDSA
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	672 if (key->type == OSSH_EC) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	673 unsigned char* private_key_bytes = NULL;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	674 int private_key_len = 0;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	675 unsigned char* public_key_bytes = NULL;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	676 int public_key_len = 0;
807 75509065db53 have separate ecdsa keys for each size Matt Johnston <matt@ucc.asn.au> parents: 806 diff changeset	677 ecc_key *ecc = NULL;
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	678 const struct dropbear_ecc_curve *curve = NULL;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	679
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	680 /* See SEC1 v2, Appendix C.4 */
c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	681 /* OpenSSL (so OpenSSH) seems to include the optional parts. */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	682
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	683 /* privateKey OCTET STRING, */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	684 ret = ber_read_id_len(p, key->keyblob+key->keyblob_len-p,
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	685 &id, &len, &flags);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	686 p += ret;
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	687 /* id==4 for octet string */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	688 if (ret < 0 \|\| id != 4 \|\|
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	689 key->keyblob+key->keyblob_len-p < len) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	690 errmsg = "ASN.1 decoding failure";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	691 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	692 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	693 private_key_bytes = p;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	694 private_key_len = len;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	695 p += len;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	696
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	697 /* parameters [0] ECDomainParameters {{ SECGCurveNames }} OPTIONAL, */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	698 ret = ber_read_id_len(p, key->keyblob+key->keyblob_len-p,
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	699 &id, &len, &flags);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	700 p += ret;
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	701 /* id==0 */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	702 if (ret < 0 \|\| id != 0) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	703 errmsg = "ASN.1 decoding failure";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	704 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	705 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	706
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	707 ret = ber_read_id_len(p, key->keyblob+key->keyblob_len-p,
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	708 &id, &len, &flags);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	709 p += ret;
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	710 /* id==6 for object */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	711 if (ret < 0 \|\| id != 6 \|\|
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	712 key->keyblob+key->keyblob_len-p < len) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	713 errmsg = "ASN.1 decoding failure";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	714 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	715 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	716
847 f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	717 if (0) {}
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	718 #ifdef DROPBEAR_ECC_256
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	719 else if (len == sizeof(OID_SEC256R1_BLOB)
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	720 && memcmp(p, OID_SEC256R1_BLOB, len) == 0) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	721 retkey->type = DROPBEAR_SIGNKEY_ECDSA_NISTP256;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	722 curve = &ecc_curve_nistp256;
847 f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	723 }
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	724 #endif
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	725 #ifdef DROPBEAR_ECC_384
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	726 else if (len == sizeof(OID_SEC384R1_BLOB)
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	727 && memcmp(p, OID_SEC384R1_BLOB, len) == 0) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	728 retkey->type = DROPBEAR_SIGNKEY_ECDSA_NISTP384;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	729 curve = &ecc_curve_nistp384;
847 f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	730 }
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	731 #endif
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	732 #ifdef DROPBEAR_ECC_521
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	733 else if (len == sizeof(OID_SEC521R1_BLOB)
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	734 && memcmp(p, OID_SEC521R1_BLOB, len) == 0) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	735 retkey->type = DROPBEAR_SIGNKEY_ECDSA_NISTP521;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	736 curve = &ecc_curve_nistp521;
847 f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	737 }
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	738 #endif
f4bb964c8678 Add '-R' for delayed hostkey option Matt Johnston <matt@ucc.asn.au> parents: 846 diff changeset	739 else {
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	740 errmsg = "Unknown ECC key type";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	741 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	742 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	743 p += len;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	744
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	745 /* publicKey [1] BIT STRING OPTIONAL */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	746 ret = ber_read_id_len(p, key->keyblob+key->keyblob_len-p,
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	747 &id, &len, &flags);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	748 p += ret;
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	749 /* id==1 */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	750 if (ret < 0 \|\| id != 1) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	751 errmsg = "ASN.1 decoding failure";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	752 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	753 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	754
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	755 ret = ber_read_id_len(p, key->keyblob+key->keyblob_len-p,
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	756 &id, &len, &flags);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	757 p += ret;
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	758 /* id==3 for bit string */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	759 if (ret < 0 \|\| id != 3 \|\|
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	760 key->keyblob+key->keyblob_len-p < len) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	761 errmsg = "ASN.1 decoding failure";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	762 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	763 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	764 public_key_bytes = p+1;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	765 public_key_len = len-1;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	766 p += len;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	767
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	768 buf_putbytes(blobbuf, public_key_bytes, public_key_len);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	769 ecc = buf_get_ecc_raw_pubkey(blobbuf, curve);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	770 if (!ecc) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	771 errmsg = "Error parsing ECC key";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	772 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	773 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	774 m_mp_alloc_init_multi((mp_int**)&ecc->k, NULL);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	775 if (mp_read_unsigned_bin(ecc->k, private_key_bytes, private_key_len)
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	776 != MP_OKAY) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	777 errmsg = "Error parsing ECC key";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	778 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	779 }
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	780
841 d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	781 *signkey_key_ptr(retkey, retkey->type) = ecc;
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	782 }
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	783 #endif /* DROPBEAR_ECDSA */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	784
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	785 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	786 * Now put together the actual key. Simplest way to do this is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	787 * to assemble our own key blobs and feed them to the createkey
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	788 * functions; this is a bit faffy but it does mean we get all
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	789 * the sanity checks for free.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	790 */
806 71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	791 if (key->type == OSSH_RSA \|\| key->type == OSSH_DSA) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	792 buf_setpos(blobbuf, 0);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	793 type = DROPBEAR_SIGNKEY_ANY;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	794 if (buf_get_priv_key(blobbuf, retkey, &type)
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	795 != DROPBEAR_SUCCESS) {
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	796 errmsg = "unable to create key structure";
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	797 sign_key_free(retkey);
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	798 retkey = NULL;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	799 goto error;
71e7d31f7671 hackish ECC import code from OpenSSH Matt Johnston <matt@ucc.asn.au> parents: 793 diff changeset	800 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	801 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	802
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	803 errmsg = NULL; /* no error */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	804 retval = retkey;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	805
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	806 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	807 if (blobbuf) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	808 buf_burn(blobbuf);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	809 buf_free(blobbuf);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	810 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	811 m_burn(key->keyblob, key->keyblob_size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	812 m_free(key->keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	813 m_burn(key, sizeof(key));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	814 m_free(key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	815 if (errmsg) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	816 fprintf(stderr, "Error: %s\n", errmsg);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	817 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	818 return retval;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	819 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	820
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	821 static int openssh_write(const char filename, sign_key key,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822 char *passphrase)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	823 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	824 buffer * keyblob = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	825 buffer * extrablob = NULL; /* used for calculated values to write */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	826 unsigned char *outblob = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	827 int outlen = -9999;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	828 struct mpint_pos numbers[9];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	829 int nnumbers = -1, pos, len, seqlen, i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	830 char header = NULL, footer = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	831 char zero[1];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	832 int ret = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	833 FILE *fp;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	834
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835 #ifdef DROPBEAR_RSA
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836 mp_int dmp1, dmq1, iqmp, tmpval; /* for rsa */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	837 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	838
935 25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	839 if (
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	840 #ifdef DROPBEAR_RSA
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	841 key->type == DROPBEAR_SIGNKEY_RSA \|\|
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	842 #endif
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	843 #ifdef DROPBEAR_DSS
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	844 key->type == DROPBEAR_SIGNKEY_DSS \|\|
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	845 #endif
25692c60479e Fix compiling with ECDSA and DSS disabled Matt Johnston <matt@ucc.asn.au> parents: 867 diff changeset	846 0)
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	847 {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	848 /*
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	849 * Fetch the key blobs.
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	850 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	851 keyblob = buf_new(3000);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	852 buf_put_priv_key(keyblob, key, key->type);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	853
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	854 buf_setpos(keyblob, 0);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	855 /* skip the "ssh-rsa" or "ssh-dss" header */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	856 buf_incrpos(keyblob, buf_getint(keyblob));
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	857
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	858 /*
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	859 * Find the sequence of integers to be encoded into the OpenSSH
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	860 * key blob, and also decide on the header line.
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	861 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	862 numbers[0].start = zero; numbers[0].bytes = 1; zero[0] = '\0';
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	863
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	864 #ifdef DROPBEAR_RSA
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	865 if (key->type == DROPBEAR_SIGNKEY_RSA) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	866
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	867 if (key->rsakey->p == NULL \|\| key->rsakey->q == NULL) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	868 fprintf(stderr, "Pre-0.33 Dropbear keys cannot be converted to OpenSSH keys.\n");
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	869 goto error;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	870 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	871
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	872 /* e */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	873 numbers[2].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	874 numbers[2].start = buf_getptr(keyblob, numbers[2].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	875 buf_incrpos(keyblob, numbers[2].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	876
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	877 /* n */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	878 numbers[1].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	879 numbers[1].start = buf_getptr(keyblob, numbers[1].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	880 buf_incrpos(keyblob, numbers[1].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	881
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	882 /* d */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	883 numbers[3].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	884 numbers[3].start = buf_getptr(keyblob, numbers[3].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	885 buf_incrpos(keyblob, numbers[3].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	886
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	887 /* p */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	888 numbers[4].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	889 numbers[4].start = buf_getptr(keyblob, numbers[4].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	890 buf_incrpos(keyblob, numbers[4].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	891
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	892 /* q */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	893 numbers[5].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	894 numbers[5].start = buf_getptr(keyblob, numbers[5].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	895 buf_incrpos(keyblob, numbers[5].bytes);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	896
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	897 /* now calculate some extra parameters: */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	898 m_mp_init(&tmpval);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	899 m_mp_init(&dmp1);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	900 m_mp_init(&dmq1);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	901 m_mp_init(&iqmp);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	902
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	903 /* dmp1 = d mod (p-1) */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	904 if (mp_sub_d(key->rsakey->p, 1, &tmpval) != MP_OKAY) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	905 fprintf(stderr, "Bignum error for p-1\n");
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	906 goto error;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	907 }
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	908 if (mp_mod(key->rsakey->d, &tmpval, &dmp1) != MP_OKAY) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	909 fprintf(stderr, "Bignum error for dmp1\n");
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	910 goto error;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	911 }
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	912
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	913 /* dmq1 = d mod (q-1) */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	914 if (mp_sub_d(key->rsakey->q, 1, &tmpval) != MP_OKAY) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	915 fprintf(stderr, "Bignum error for q-1\n");
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	916 goto error;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	917 }
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	918 if (mp_mod(key->rsakey->d, &tmpval, &dmq1) != MP_OKAY) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	919 fprintf(stderr, "Bignum error for dmq1\n");
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	920 goto error;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	921 }
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	922
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	923 /* iqmp = (q^-1) mod p */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	924 if (mp_invmod(key->rsakey->q, key->rsakey->p, &iqmp) != MP_OKAY) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	925 fprintf(stderr, "Bignum error for iqmp\n");
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	926 goto error;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	927 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	928
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	929 extrablob = buf_new(2000);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	930 buf_putmpint(extrablob, &dmp1);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	931 buf_putmpint(extrablob, &dmq1);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	932 buf_putmpint(extrablob, &iqmp);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	933 buf_setpos(extrablob, 0);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	934 mp_clear(&dmp1);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	935 mp_clear(&dmq1);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	936 mp_clear(&iqmp);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	937 mp_clear(&tmpval);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	938
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	939 /* dmp1 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	940 numbers[6].bytes = buf_getint(extrablob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	941 numbers[6].start = buf_getptr(extrablob, numbers[6].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	942 buf_incrpos(extrablob, numbers[6].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	943
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	944 /* dmq1 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	945 numbers[7].bytes = buf_getint(extrablob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	946 numbers[7].start = buf_getptr(extrablob, numbers[7].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	947 buf_incrpos(extrablob, numbers[7].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	948
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	949 /* iqmp */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	950 numbers[8].bytes = buf_getint(extrablob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	951 numbers[8].start = buf_getptr(extrablob, numbers[8].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	952 buf_incrpos(extrablob, numbers[8].bytes);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	953
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	954 nnumbers = 9;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	955 header = "-----BEGIN RSA PRIVATE KEY-----\n";
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	956 footer = "-----END RSA PRIVATE KEY-----\n";
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	957 }
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	958 #endif /* DROPBEAR_RSA */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	959
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	960 #ifdef DROPBEAR_DSS
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	961 if (key->type == DROPBEAR_SIGNKEY_DSS) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	962
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	963 /* p */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	964 numbers[1].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	965 numbers[1].start = buf_getptr(keyblob, numbers[1].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	966 buf_incrpos(keyblob, numbers[1].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	967
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	968 /* q */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	969 numbers[2].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	970 numbers[2].start = buf_getptr(keyblob, numbers[2].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	971 buf_incrpos(keyblob, numbers[2].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	972
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	973 /* g */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	974 numbers[3].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	975 numbers[3].start = buf_getptr(keyblob, numbers[3].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	976 buf_incrpos(keyblob, numbers[3].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	977
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	978 /* y */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	979 numbers[4].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	980 numbers[4].start = buf_getptr(keyblob, numbers[4].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	981 buf_incrpos(keyblob, numbers[4].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	982
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	983 /* x */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	984 numbers[5].bytes = buf_getint(keyblob);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	985 numbers[5].start = buf_getptr(keyblob, numbers[5].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	986 buf_incrpos(keyblob, numbers[5].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	987
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	988 nnumbers = 6;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	989 header = "-----BEGIN DSA PRIVATE KEY-----\n";
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	990 footer = "-----END DSA PRIVATE KEY-----\n";
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	991 }
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	992 #endif /* DROPBEAR_DSS */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	993
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	994 /*
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	995 * Now count up the total size of the ASN.1 encoded integers,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	996 * so as to determine the length of the containing SEQUENCE.
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	997 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	998 len = 0;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	999 for (i = 0; i < nnumbers; i++) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1000 len += ber_write_id_len(NULL, 2, numbers[i].bytes, 0);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1001 len += numbers[i].bytes;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1002 }
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1003 seqlen = len;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1004 /* Now add on the SEQUENCE header. */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1005 len += ber_write_id_len(NULL, 16, seqlen, ASN1_CONSTRUCTED);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1006 /* Round up to the cipher block size, ensuring we have at least one
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1007 * byte of padding (see below). */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1008 outlen = len;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1009 if (passphrase)
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1010 outlen = (outlen+8) &~ 7;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1011
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1012 /*
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1013 * Now we know how big outblob needs to be. Allocate it.
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1014 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1015 outblob = (unsigned char*)m_malloc(outlen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1016
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1017 /*
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1018 * And write the data into it.
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1019 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1020 pos = 0;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1021 pos += ber_write_id_len(outblob+pos, 16, seqlen, ASN1_CONSTRUCTED);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1022 for (i = 0; i < nnumbers; i++) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1023 pos += ber_write_id_len(outblob+pos, 2, numbers[i].bytes, 0);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1024 memcpy(outblob+pos, numbers[i].start, numbers[i].bytes);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1025 pos += numbers[i].bytes;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1026 }
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	1027 } /* end RSA and DSS handling */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1028
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1029 #ifdef DROPBEAR_ECDSA
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1030 if (key->type == DROPBEAR_SIGNKEY_ECDSA_NISTP256
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1031 \|\| key->type == DROPBEAR_SIGNKEY_ECDSA_NISTP384
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1032 \|\| key->type == DROPBEAR_SIGNKEY_ECDSA_NISTP521) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1033
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1034 /* SEC1 V2 appendix c.4
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1035 ECPrivateKey ::= SEQUENCE {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1036 version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1),
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1037 privateKey OCTET STRING,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1038 parameters [0] ECDomainParameters {{ SECGCurveNames }} OPTIONAL,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1039 publicKey [1] BIT STRING OPTIONAL
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1040 }
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1041 */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1042 buffer *seq_buf = buf_new(400);
846 b298bb438625 refactor key generation, make it generate as required. Matt Johnston <matt@ucc.asn.au> parents: 845 diff changeset	1043 ecc_key eck = (ecc_key)signkey_key_ptr(key, key->type);
b298bb438625 refactor key generation, make it generate as required. Matt Johnston <matt@ucc.asn.au> parents: 845 diff changeset	1044 const long curve_size = (*eck)->dp->size;
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1045 int curve_oid_len = 0;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1046 const void* curve_oid = NULL;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1047 unsigned long pubkey_size = 2*curve_size+1;
867 d2d624c951ca - Increase buffer size, fixes converting 521bit ECC key Matt Johnston <matt@ucc.asn.au> parents: 857 diff changeset	1048 unsigned int k_size;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1049
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1050 /* version. less than 10 bytes */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1051 buf_incrwritepos(seq_buf,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1052 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 2, 1, 0));
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1053 buf_putbyte(seq_buf, 1);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1054
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1055 /* privateKey */
867 d2d624c951ca - Increase buffer size, fixes converting 521bit ECC key Matt Johnston <matt@ucc.asn.au> parents: 857 diff changeset	1056 k_size = mp_unsigned_bin_size((*eck)->k);
d2d624c951ca - Increase buffer size, fixes converting 521bit ECC key Matt Johnston <matt@ucc.asn.au> parents: 857 diff changeset	1057 dropbear_assert(k_size <= curve_size);
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1058 buf_incrwritepos(seq_buf,
867 d2d624c951ca - Increase buffer size, fixes converting 521bit ECC key Matt Johnston <matt@ucc.asn.au> parents: 857 diff changeset	1059 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 4, k_size, 0));
d2d624c951ca - Increase buffer size, fixes converting 521bit ECC key Matt Johnston <matt@ucc.asn.au> parents: 857 diff changeset	1060 mp_to_unsigned_bin((*eck)->k, buf_getwriteptr(seq_buf, k_size));
d2d624c951ca - Increase buffer size, fixes converting 521bit ECC key Matt Johnston <matt@ucc.asn.au> parents: 857 diff changeset	1061 buf_incrwritepos(seq_buf, k_size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1062
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1063 /* SECGCurveNames */
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1064 switch (key->type)
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1065 {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1066 case DROPBEAR_SIGNKEY_ECDSA_NISTP256:
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1067 curve_oid_len = sizeof(OID_SEC256R1_BLOB);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1068 curve_oid = OID_SEC256R1_BLOB;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1069 break;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1070 case DROPBEAR_SIGNKEY_ECDSA_NISTP384:
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1071 curve_oid_len = sizeof(OID_SEC384R1_BLOB);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1072 curve_oid = OID_SEC384R1_BLOB;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1073 break;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1074 case DROPBEAR_SIGNKEY_ECDSA_NISTP521:
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1075 curve_oid_len = sizeof(OID_SEC521R1_BLOB);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1076 curve_oid = OID_SEC521R1_BLOB;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1077 break;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1078 default:
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1079 dropbear_exit("Internal error");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1080 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1081
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1082 buf_incrwritepos(seq_buf,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1083 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 0, 2+curve_oid_len, 0xa0));
857 c19acba28590 use oldstyle comments Matt Johnston <matt@ucc.asn.au> parents: 849 diff changeset	1084 /* object == 6 */
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1085 buf_incrwritepos(seq_buf,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1086 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 6, curve_oid_len, 0));
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1087 buf_putbytes(seq_buf, curve_oid, curve_oid_len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1088
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1089 buf_incrwritepos(seq_buf,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1090 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 1, 2+1+pubkey_size, 0xa0));
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1091 buf_incrwritepos(seq_buf,
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1092 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 3, 1+pubkey_size, 0));
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1093 buf_putbyte(seq_buf, 0);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1094 int err = ecc_ansi_x963_export(*eck, buf_getwriteptr(seq_buf, pubkey_size), &pubkey_size);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1095 if (err != CRYPT_OK) {
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1096 dropbear_exit("ECC error");
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1097 }
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1098 buf_incrwritepos(seq_buf, pubkey_size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1099
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1100 buf_setpos(seq_buf, 0);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1101
867 d2d624c951ca - Increase buffer size, fixes converting 521bit ECC key Matt Johnston <matt@ucc.asn.au> parents: 857 diff changeset	1102 outblob = (unsigned char*)m_malloc(1000);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1103
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1104 pos = 0;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1105 pos += ber_write_id_len(outblob+pos, 16, seq_buf->len, ASN1_CONSTRUCTED);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1106 memcpy(&outblob[pos], seq_buf->data, seq_buf->len);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1107 pos += seq_buf->len;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1108 len = pos;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1109 outlen = len;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1110
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1111 buf_burn(seq_buf);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1112 buf_free(seq_buf);
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1113 seq_buf = NULL;
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1114
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1115 header = "-----BEGIN EC PRIVATE KEY-----\n";
d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1116 footer = "-----END EC PRIVATE KEY-----\n";
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1117 }
836 d7d9f1612d51 writing out openssh ecc keys works Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	1118 #endif
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1119
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1120 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1121 * Padding on OpenSSH keys is deterministic. The number of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1122 * padding bytes is always more than zero, and always at most
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1123 * the cipher block length. The value of each padding byte is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1124 * equal to the number of padding bytes. So a plaintext that's
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1125 * an exact multiple of the block size will be padded with 08
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1126 * 08 08 08 08 08 08 08 (assuming a 64-bit block cipher); a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1127 * plaintext one byte less than a multiple of the block size
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1128 * will be padded with just 01.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1129 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1130 * This enables the OpenSSL key decryption function to strip
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1131 * off the padding algorithmically and return the unpadded
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1132 * plaintext to the next layer: it looks at the final byte, and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1133 * then expects to find that many bytes at the end of the data
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1134 * with the same value. Those are all removed and the rest is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1135 * returned.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1136 */
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	1137 dropbear_assert(pos == len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1138 while (pos < outlen) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1139 outblob[pos++] = outlen - len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1140 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1141
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1142 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1143 * Encrypt the key.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1144 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1145 if (passphrase) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1146 fprintf(stderr, "Encrypted keys aren't supported currently\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1147 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1148 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1149
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1150 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1151 * And save it. We'll use Unix line endings just in case it's
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1152 * subsequently transferred in binary mode.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1153 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1154 if (strlen(filename) == 1 && filename[0] == '-') {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1155 fp = stdout;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1156 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1157 fp = fopen(filename, "wb"); /* ensure Unix line endings */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1158 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1159 if (!fp) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1160 fprintf(stderr, "Failed opening output file\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1161 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1162 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1163 fputs(header, fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1164 base64_encode_fp(fp, outblob, outlen, 64);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1165 fputs(footer, fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1166 fclose(fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1167 ret = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1168
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1169 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1170 if (outblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1171 memset(outblob, 0, outlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1172 m_free(outblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1173 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1174 if (keyblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1175 buf_burn(keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1176 buf_free(keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1177 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1178 if (extrablob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1179 buf_burn(extrablob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1180 buf_free(extrablob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1181 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1182 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1183 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1184
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1185 #if 0
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1186 /* XXX TODO ssh.com stuff isn't going yet */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1187
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1188 /* ----------------------------------------------------------------------
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1189 * Code to read ssh.com private keys.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1190 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1191
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1192 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1193 * The format of the base64 blob is largely ssh2-packet-formatted,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1194 * except that mpints are a bit different: they're more like the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1195 * old ssh1 mpint. You have a 32-bit bit count N, followed by
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1196 * (N+7)/8 bytes of data.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1197 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1198 * So. The blob contains:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1199 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1200 * - uint32 0x3f6ff9eb (magic number)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1201 * - uint32 size (total blob size)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1202 * - string key-type (see below)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1203 * - string cipher-type (tells you if key is encrypted)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1204 * - string encrypted-blob
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1205 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1206 * (The first size field includes the size field itself and the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1207 * magic number before it. All other size fields are ordinary ssh2
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1208 * strings, so the size field indicates how much data is to
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1209 * _follow_.)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1210 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1211 * The encrypted blob, once decrypted, contains a single string
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1212 * which in turn contains the payload. (This allows padding to be
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1213 * added after that string while still making it clear where the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1214 * real payload ends. Also it probably makes for a reasonable
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1215 * decryption check.)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1216 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1217 * The payload blob, for an RSA key, contains:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1218 * - mpint e
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1219 * - mpint d
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1220 * - mpint n (yes, the public and private stuff is intermixed)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1221 * - mpint u (presumably inverse of p mod q)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1222 * - mpint p (p is the smaller prime)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1223 * - mpint q (q is the larger)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1224 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1225 * For a DSA key, the payload blob contains:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1226 * - uint32 0
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1227 * - mpint p
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1228 * - mpint g
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1229 * - mpint q
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1230 * - mpint y
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1231 * - mpint x
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1232 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1233 * Alternatively, if the parameters are `predefined', that
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1234 * (0,p,g,q) sequence can be replaced by a uint32 1 and a string
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1235 * containing some predefined parameter specification. shudder,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1236 * but I doubt we'll encounter this in real life.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1237 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1238 * The key type strings are ghastly. The RSA key I looked at had a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1239 * type string of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1240 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1241 * `if-modn{sign{rsa-pkcs1-sha1},encrypt{rsa-pkcs1v2-oaep}}'
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1242 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1243 * and the DSA key wasn't much better:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1244 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1245 * `dl-modp{sign{dsa-nist-sha1},dh{plain}}'
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1246 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1247 * It isn't clear that these will always be the same. I think it
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1248 * might be wise just to look at the `if-modn{sign{rsa' and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1249 * `dl-modp{sign{dsa' prefixes.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1250 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1251 * Finally, the encryption. The cipher-type string appears to be
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1252 * either `none' or `3des-cbc'. Looks as if this is SSH2-style
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1253 * 3des-cbc (i.e. outer cbc rather than inner). The key is created
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1254 * from the passphrase by means of yet another hashing faff:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1255 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1256 * - first 16 bytes are MD5(passphrase)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1257 * - next 16 bytes are MD5(passphrase \|\| first 16 bytes)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1258 * - if there were more, they'd be MD5(passphrase \|\| first 32),
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1259 * and so on.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1260 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1261
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1262 #define SSHCOM_MAGIC_NUMBER 0x3f6ff9eb
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1263
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1264 struct sshcom_key {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1265 char comment[256]; /* allowing any length is overkill */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1266 unsigned char *keyblob;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1267 int keyblob_len, keyblob_size;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1268 };
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1269
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1270 static struct sshcom_key load_sshcom_key(const char filename)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1271 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1272 struct sshcom_key *ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1273 FILE *fp;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1274 char buffer[256];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1275 int len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1276 char errmsg, p;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1277 int headers_done;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1278 char base64_bit[4];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1279 int base64_chars = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1280
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1281 ret = snew(struct sshcom_key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1282 ret->comment[0] = '\0';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1283 ret->keyblob = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1284 ret->keyblob_len = ret->keyblob_size = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1285
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1286 fp = fopen(filename, "r");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1287 if (!fp) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1288 errmsg = "Unable to open key file";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1289 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1290 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1291 if (!fgets(buffer, sizeof(buffer), fp) \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1292 0 != strcmp(buffer, "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----\n")) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1293 errmsg = "File does not begin with ssh.com key header";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1294 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1295 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1296
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1297 headers_done = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1298 while (1) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1299 if (!fgets(buffer, sizeof(buffer), fp)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1300 errmsg = "Unexpected end of file";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1301 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1302 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1303 if (!strcmp(buffer, "---- END SSH2 ENCRYPTED PRIVATE KEY ----\n"))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1304 break; /* done */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1305 if ((p = strchr(buffer, ':')) != NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1306 if (headers_done) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1307 errmsg = "Header found in body of key data";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1308 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1309 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1310 *p++ = '\0';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1311 while (p && isspace((unsigned char)p)) p++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1312 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1313 * Header lines can end in a trailing backslash for
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1314 * continuation.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1315 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1316 while ((len = strlen(p)) > (int)(sizeof(buffer) - (p-buffer) -1) \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1317 p[len-1] != '\n' \|\| p[len-2] == '\\') {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1318 if (len > (int)((p-buffer) + sizeof(buffer)-2)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1319 errmsg = "Header line too long to deal with";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1320 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1321 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1322 if (!fgets(p+len-2, sizeof(buffer)-(p-buffer)-(len-2), fp)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1323 errmsg = "Unexpected end of file";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1324 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1325 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1326 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1327 p[strcspn(p, "\n")] = '\0';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1328 if (!strcmp(buffer, "Comment")) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1329 /* Strip quotes in comment if present. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1330 if (p[0] == '"' && p[strlen(p)-1] == '"') {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1331 p++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1332 p[strlen(p)-1] = '\0';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1333 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1334 strncpy(ret->comment, p, sizeof(ret->comment));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1335 ret->comment[sizeof(ret->comment)-1] = '\0';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1336 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1337 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1338 headers_done = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1339
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1340 p = buffer;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1341 while (isbase64(*p)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1342 base64_bit[base64_chars++] = *p;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1343 if (base64_chars == 4) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1344 unsigned char out[3];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1345
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1346 base64_chars = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1347
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1348 len = base64_decode_atom(base64_bit, out);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1349
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1350 if (len <= 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1351 errmsg = "Invalid base64 encoding";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1352 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1353 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1354
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1355 if (ret->keyblob_len + len > ret->keyblob_size) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1356 ret->keyblob_size = ret->keyblob_len + len + 256;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1357 ret->keyblob = sresize(ret->keyblob, ret->keyblob_size,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1358 unsigned char);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1359 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1360
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1361 memcpy(ret->keyblob + ret->keyblob_len, out, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1362 ret->keyblob_len += len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1363 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1364
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1365 p++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1366 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1367 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1368 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1369
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1370 if (ret->keyblob_len == 0 \|\| !ret->keyblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1371 errmsg = "Key body not present";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1372 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1373 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1374
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1375 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1376
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1377 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1378 if (ret) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1379 if (ret->keyblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1380 memset(ret->keyblob, 0, ret->keyblob_size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1381 m_free(ret->keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1382 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1383 memset(&ret, 0, sizeof(ret));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1384 m_free(ret);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1385 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1386 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1387 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1388
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1389 int sshcom_encrypted(const char filename, char *comment)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1390 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1391 struct sshcom_key *key = load_sshcom_key(filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1392 int pos, len, answer;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1393
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1394 *comment = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1395 if (!key)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1396 return 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1397
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1398 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1399 * Check magic number.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1400 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1401 if (GET_32BIT(key->keyblob) != 0x3f6ff9eb)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1402 return 0; /* key is invalid */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1403
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1404 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1405 * Find the cipher-type string.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1406 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1407 answer = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1408 pos = 8;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1409 if (key->keyblob_len < pos+4)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1410 goto done; /* key is far too short */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1411 pos += 4 + GET_32BIT(key->keyblob + pos); /* skip key type */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1412 if (key->keyblob_len < pos+4)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1413 goto done; /* key is far too short */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1414 len = GET_32BIT(key->keyblob + pos); /* find cipher-type length */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1415 if (key->keyblob_len < pos+4+len)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1416 goto done; /* cipher type string is incomplete */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1417 if (len != 4 \|\| 0 != memcmp(key->keyblob + pos + 4, "none", 4))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1418 answer = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1419
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1420 done:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1421 *comment = dupstr(key->comment);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1422 memset(key->keyblob, 0, key->keyblob_size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1423 m_free(key->keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1424 memset(&key, 0, sizeof(key));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1425 m_free(key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1426 return answer;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1427 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1428
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1429 static int sshcom_read_mpint(void data, int len, struct mpint_pos ret)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1430 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1431 int bits;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1432 int bytes;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1433 unsigned char d = (unsigned char ) data;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1434
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1435 if (len < 4)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1436 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1437 bits = GET_32BIT(d);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1438
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1439 bytes = (bits + 7) / 8;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1440 if (len < 4+bytes)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1441 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1442
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1443 ret->start = d + 4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1444 ret->bytes = bytes;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1445 return bytes+4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1446
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1447 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1448 ret->start = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1449 ret->bytes = -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1450 return len; /* ensure further calls fail as well */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1451 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1452
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1453 static int sshcom_put_mpint(void target, void data, int len)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1454 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1455 unsigned char d = (unsigned char )target;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1456 unsigned char i = (unsigned char )data;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1457 int bits = len * 8 - 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1458
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1459 while (bits > 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1460 if (*i & (1 << (bits & 7)))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1461 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1462 if (!(bits-- & 7))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1463 i++, len--;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1464 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1465
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1466 PUT_32BIT(d, bits+1);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1467 memcpy(d+4, i, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1468 return len+4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1469 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1470
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1471 sign_key sshcom_read(const char filename, char *passphrase)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1472 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1473 struct sshcom_key *key = load_sshcom_key(filename);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1474 char *errmsg;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1475 int pos, len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1476 const char prefix_rsa[] = "if-modn{sign{rsa";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1477 const char prefix_dsa[] = "dl-modp{sign{dsa";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1478 enum { RSA, DSA } type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1479 int encrypted;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1480 char *ciphertext;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1481 int cipherlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1482 struct ssh2_userkey ret = NULL, retkey;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1483 const struct ssh_signkey *alg;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1484 unsigned char *blob = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1485 int blobsize, publen, privlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1486
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1487 if (!key)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1488 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1489
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1490 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1491 * Check magic number.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1492 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1493 if (GET_32BIT(key->keyblob) != SSHCOM_MAGIC_NUMBER) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1494 errmsg = "Key does not begin with magic number";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1495 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1496 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1497
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1498 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1499 * Determine the key type.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1500 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1501 pos = 8;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1502 if (key->keyblob_len < pos+4 \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1503 (len = GET_32BIT(key->keyblob + pos)) > key->keyblob_len - pos - 4) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1504 errmsg = "Key blob does not contain a key type string";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1505 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1506 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1507 if (len > sizeof(prefix_rsa) - 1 &&
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1508 !memcmp(key->keyblob+pos+4, prefix_rsa, sizeof(prefix_rsa) - 1)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1509 type = RSA;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1510 } else if (len > sizeof(prefix_dsa) - 1 &&
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1511 !memcmp(key->keyblob+pos+4, prefix_dsa, sizeof(prefix_dsa) - 1)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1512 type = DSA;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1513 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1514 errmsg = "Key is of unknown type";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1515 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1516 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1517 pos += 4+len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1518
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1519 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1520 * Determine the cipher type.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1521 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1522 if (key->keyblob_len < pos+4 \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1523 (len = GET_32BIT(key->keyblob + pos)) > key->keyblob_len - pos - 4) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1524 errmsg = "Key blob does not contain a cipher type string";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1525 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1526 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1527 if (len == 4 && !memcmp(key->keyblob+pos+4, "none", 4))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1528 encrypted = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1529 else if (len == 8 && !memcmp(key->keyblob+pos+4, "3des-cbc", 8))
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1530 encrypted = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1531 else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1532 errmsg = "Key encryption is of unknown type";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1533 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1534 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1535 pos += 4+len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1536
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1537 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1538 * Get hold of the encrypted part of the key.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1539 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1540 if (key->keyblob_len < pos+4 \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1541 (len = GET_32BIT(key->keyblob + pos)) > key->keyblob_len - pos - 4) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1542 errmsg = "Key blob does not contain actual key data";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1543 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1544 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1545 ciphertext = (char *)key->keyblob + pos + 4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1546 cipherlen = len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1547 if (cipherlen == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1548 errmsg = "Length of key data is zero";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1549 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1550 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1551
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1552 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1553 * Decrypt it if necessary.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1554 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1555 if (encrypted) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1556 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1557 * Derive encryption key from passphrase and iv/salt:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1558 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1559 * - let block A equal MD5(passphrase)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1560 * - let block B equal MD5(passphrase \|\| A)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1561 * - block C would be MD5(passphrase \|\| A \|\| B) and so on
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1562 * - encryption key is the first N bytes of A \|\| B
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1563 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1564 struct MD5Context md5c;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1565 unsigned char keybuf[32], iv[8];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1566
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1567 if (cipherlen % 8 != 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1568 errmsg = "Encrypted part of key is not a multiple of cipher block"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1569 " size";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1570 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1571 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1572
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1573 MD5Init(&md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1574 MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1575 MD5Final(keybuf, &md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1576
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1577 MD5Init(&md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1578 MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1579 MD5Update(&md5c, keybuf, 16);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1580 MD5Final(keybuf+16, &md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1581
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1582 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1583 * Now decrypt the key blob.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1584 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1585 memset(iv, 0, sizeof(iv));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1586 des3_decrypt_pubkey_ossh(keybuf, iv, (unsigned char *)ciphertext,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1587 cipherlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1588
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1589 memset(&md5c, 0, sizeof(md5c));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1590 memset(keybuf, 0, sizeof(keybuf));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1591
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1592 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1593 * Hereafter we return WRONG_PASSPHRASE for any parsing
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1594 * error. (But only if we've just tried to decrypt it!
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1595 * Returning WRONG_PASSPHRASE for an unencrypted key is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1596 * automatic doom.)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1597 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1598 if (encrypted)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1599 ret = SSH2_WRONG_PASSPHRASE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1600 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1601
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1602 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1603 * Strip away the containing string to get to the real meat.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1604 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1605 len = GET_32BIT(ciphertext);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1606 if (len > cipherlen-4) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1607 errmsg = "containing string was ill-formed";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1608 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1609 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1610 ciphertext += 4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1611 cipherlen = len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1612
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1613 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1614 * Now we break down into RSA versus DSA. In either case we'll
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1615 * construct public and private blobs in our own format, and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1616 * end up feeding them to alg->createkey().
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1617 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1618 blobsize = cipherlen + 256;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1619 blob = snewn(blobsize, unsigned char);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1620 privlen = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1621 if (type == RSA) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1622 struct mpint_pos n, e, d, u, p, q;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1623 int pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1624 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &e);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1625 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &d);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1626 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &n);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1627 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &u);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1628 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &p);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1629 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &q);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1630 if (!q.start) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1631 errmsg = "key data did not contain six integers";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1632 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1633 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1634
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1635 alg = &ssh_rsa;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1636 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1637 pos += put_string(blob+pos, "ssh-rsa", 7);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1638 pos += put_mp(blob+pos, e.start, e.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1639 pos += put_mp(blob+pos, n.start, n.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1640 publen = pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1641 pos += put_string(blob+pos, d.start, d.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1642 pos += put_mp(blob+pos, q.start, q.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1643 pos += put_mp(blob+pos, p.start, p.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1644 pos += put_mp(blob+pos, u.start, u.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1645 privlen = pos - publen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1646 } else if (type == DSA) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1647 struct mpint_pos p, q, g, x, y;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1648 int pos = 4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1649 if (GET_32BIT(ciphertext) != 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1650 errmsg = "predefined DSA parameters not supported";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1651 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1652 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1653 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &p);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1654 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &g);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1655 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &q);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1656 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &y);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1657 pos += sshcom_read_mpint(ciphertext+pos, cipherlen-pos, &x);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1658 if (!x.start) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1659 errmsg = "key data did not contain five integers";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1660 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1661 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1662
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1663 alg = &ssh_dss;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1664 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1665 pos += put_string(blob+pos, "ssh-dss", 7);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1666 pos += put_mp(blob+pos, p.start, p.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1667 pos += put_mp(blob+pos, q.start, q.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1668 pos += put_mp(blob+pos, g.start, g.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1669 pos += put_mp(blob+pos, y.start, y.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1670 publen = pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1671 pos += put_mp(blob+pos, x.start, x.bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1672 privlen = pos - publen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1673 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1674
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	1675 dropbear_assert(privlen > 0); /* should have bombed by now if not */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1676
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1677 retkey = snew(struct ssh2_userkey);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1678 retkey->alg = alg;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1679 retkey->data = alg->createkey(blob, publen, blob+publen, privlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1680 if (!retkey->data) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1681 m_free(retkey);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1682 errmsg = "unable to create key data structure";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1683 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1684 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1685 retkey->comment = dupstr(key->comment);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1686
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1687 errmsg = NULL; /* no error */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1688 ret = retkey;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1689
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1690 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1691 if (blob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1692 memset(blob, 0, blobsize);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1693 m_free(blob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1694 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1695 memset(key->keyblob, 0, key->keyblob_size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1696 m_free(key->keyblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1697 memset(&key, 0, sizeof(key));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1698 m_free(key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1699 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1700 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1701
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1702 int sshcom_write(const char filename, sign_key key,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1703 char *passphrase)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1704 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1705 unsigned char pubblob, privblob;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1706 int publen, privlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1707 unsigned char *outblob;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1708 int outlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1709 struct mpint_pos numbers[6];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1710 int nnumbers, initial_zero, pos, lenpos, i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1711 char *type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1712 char *ciphertext;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1713 int cipherlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1714 int ret = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1715 FILE *fp;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1716
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1717 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1718 * Fetch the key blobs.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1719 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1720 pubblob = key->alg->public_blob(key->data, &publen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1721 privblob = key->alg->private_blob(key->data, &privlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1722 outblob = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1723
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1724 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1725 * Find the sequence of integers to be encoded into the OpenSSH
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1726 * key blob, and also decide on the header line.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1727 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1728 if (key->alg == &ssh_rsa) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1729 int pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1730 struct mpint_pos n, e, d, p, q, iqmp;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1731
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1732 pos = 4 + GET_32BIT(pubblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1733 pos += ssh2_read_mpint(pubblob+pos, publen-pos, &e);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1734 pos += ssh2_read_mpint(pubblob+pos, publen-pos, &n);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1735 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1736 pos += ssh2_read_mpint(privblob+pos, privlen-pos, &d);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1737 pos += ssh2_read_mpint(privblob+pos, privlen-pos, &p);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1738 pos += ssh2_read_mpint(privblob+pos, privlen-pos, &q);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1739 pos += ssh2_read_mpint(privblob+pos, privlen-pos, &iqmp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1740
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	1741 dropbear_assert(e.start && iqmp.start); /* can't go wrong */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1742
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1743 numbers[0] = e;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1744 numbers[1] = d;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1745 numbers[2] = n;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1746 numbers[3] = iqmp;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1747 numbers[4] = q;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1748 numbers[5] = p;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1749
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1750 nnumbers = 6;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1751 initial_zero = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1752 type = "if-modn{sign{rsa-pkcs1-sha1},encrypt{rsa-pkcs1v2-oaep}}";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1753 } else if (key->alg == &ssh_dss) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1754 int pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1755 struct mpint_pos p, q, g, y, x;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1756
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1757 pos = 4 + GET_32BIT(pubblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1758 pos += ssh2_read_mpint(pubblob+pos, publen-pos, &p);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1759 pos += ssh2_read_mpint(pubblob+pos, publen-pos, &q);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1760 pos += ssh2_read_mpint(pubblob+pos, publen-pos, &g);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1761 pos += ssh2_read_mpint(pubblob+pos, publen-pos, &y);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1762 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1763 pos += ssh2_read_mpint(privblob+pos, privlen-pos, &x);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1764
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	1765 dropbear_assert(y.start && x.start); /* can't go wrong */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1766
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1767 numbers[0] = p;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1768 numbers[1] = g;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1769 numbers[2] = q;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1770 numbers[3] = y;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1771 numbers[4] = x;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1772
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1773 nnumbers = 5;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1774 initial_zero = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1775 type = "dl-modp{sign{dsa-nist-sha1},dh{plain}}";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1776 } else {
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	1777 dropbear_assert(0); /* zoinks! */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1778 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1779
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1780 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1781 * Total size of key blob will be somewhere under 512 plus
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1782 * combined length of integers. We'll calculate the more
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1783 * precise size as we construct the blob.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1784 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1785 outlen = 512;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1786 for (i = 0; i < nnumbers; i++)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1787 outlen += 4 + numbers[i].bytes;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1788 outblob = snewn(outlen, unsigned char);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1789
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1790 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1791 * Create the unencrypted key blob.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1792 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1793 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1794 PUT_32BIT(outblob+pos, SSHCOM_MAGIC_NUMBER); pos += 4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1795 pos += 4; /* length field, fill in later */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1796 pos += put_string(outblob+pos, type, strlen(type));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1797 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1798 char *ciphertype = passphrase ? "3des-cbc" : "none";
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1799 pos += put_string(outblob+pos, ciphertype, strlen(ciphertype));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1800 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1801 lenpos = pos; /* remember this position */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1802 pos += 4; /* encrypted-blob size */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1803 pos += 4; /* encrypted-payload size */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1804 if (initial_zero) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1805 PUT_32BIT(outblob+pos, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1806 pos += 4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1807 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1808 for (i = 0; i < nnumbers; i++)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1809 pos += sshcom_put_mpint(outblob+pos,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1810 numbers[i].start, numbers[i].bytes);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1811 /* Now wrap up the encrypted payload. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1812 PUT_32BIT(outblob+lenpos+4, pos - (lenpos+8));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1813 /* Pad encrypted blob to a multiple of cipher block size. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1814 if (passphrase) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1815 int padding = -(pos - (lenpos+4)) & 7;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1816 while (padding--)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1817 outblob[pos++] = random_byte();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1818 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1819 ciphertext = (char *)outblob+lenpos+4;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1820 cipherlen = pos - (lenpos+4);
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	1821 dropbear_assert(!passphrase \|\| cipherlen % 8 == 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1822 /* Wrap up the encrypted blob string. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1823 PUT_32BIT(outblob+lenpos, cipherlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1824 /* And finally fill in the total length field. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1825 PUT_32BIT(outblob+4, pos);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1826
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 87 diff changeset	1827 dropbear_assert(pos < outlen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1828
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1829 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1830 * Encrypt the key.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1831 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1832 if (passphrase) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1833 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1834 * Derive encryption key from passphrase and iv/salt:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1835 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1836 * - let block A equal MD5(passphrase)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1837 * - let block B equal MD5(passphrase \|\| A)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1838 * - block C would be MD5(passphrase \|\| A \|\| B) and so on
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1839 * - encryption key is the first N bytes of A \|\| B
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1840 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1841 struct MD5Context md5c;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1842 unsigned char keybuf[32], iv[8];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1843
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1844 MD5Init(&md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1845 MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1846 MD5Final(keybuf, &md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1847
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1848 MD5Init(&md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1849 MD5Update(&md5c, (unsigned char *)passphrase, strlen(passphrase));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1850 MD5Update(&md5c, keybuf, 16);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1851 MD5Final(keybuf+16, &md5c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1852
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1853 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1854 * Now decrypt the key blob.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1855 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1856 memset(iv, 0, sizeof(iv));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1857 des3_encrypt_pubkey_ossh(keybuf, iv, (unsigned char *)ciphertext,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1858 cipherlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1859
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1860 memset(&md5c, 0, sizeof(md5c));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1861 memset(keybuf, 0, sizeof(keybuf));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1862 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1863
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1864 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1865 * And save it. We'll use Unix line endings just in case it's
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1866 * subsequently transferred in binary mode.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1867 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1868 fp = fopen(filename, "wb"); /* ensure Unix line endings */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1869 if (!fp)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1870 goto error;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1871 fputs("---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----\n", fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1872 fprintf(fp, "Comment: \"");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1873 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1874 * Comment header is broken with backslash-newline if it goes
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1875 * over 70 chars. Although it's surrounded by quotes, it
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1876 * _doesn't_ escape backslashes or quotes within the string.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1877 * Don't ask me, I didn't design it.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1878 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1879 {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1880 int slen = 60; /* starts at 60 due to "Comment: " */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1881 char *c = key->comment;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1882 while ((int)strlen(c) > slen) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1883 fprintf(fp, "%.*s\\\n", slen, c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1884 c += slen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1885 slen = 70; /* allow 70 chars on subsequent lines */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1886 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1887 fprintf(fp, "%s\"\n", c);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1888 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1889 base64_encode_fp(fp, outblob, pos, 70);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1890 fputs("---- END SSH2 ENCRYPTED PRIVATE KEY ----\n", fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1891 fclose(fp);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1892 ret = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1893
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1894 error:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1895 if (outblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1896 memset(outblob, 0, outlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1897 m_free(outblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1898 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1899 if (privblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1900 memset(privblob, 0, privlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1901 m_free(privblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1902 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1903 if (pubblob) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1904 memset(pubblob, 0, publen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1905 m_free(pubblob);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1906 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1907 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1908 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1909 #endif /* ssh.com stuff disabled */

Mercurial > dropbear

annotate keyimport.c @ 984:d46e7f613157