dropbear: rsa.c annotate

annotate rsa.c @ 647:939cd3e22c87 dropbear-tfm

- Fix constraints so we don't get warned about uninitialised variable (it isn't used as input by the asm)

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 30 Nov 2011 23:15:21 +0800
parents	33fd2f3499d2
children

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 * Dropbear - a SSH2 server
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * All rights reserved.
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * in the Software without restriction, including without limitation the rights
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 * furnished to do so, subject to the following conditions:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 * The above copyright notice and this permission notice shall be included in
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * SOFTWARE. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 /* Perform RSA operations on data, including reading keys, signing and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 * verification.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 * The format is specified in rfc2437, Applied Cryptography or The Handbook of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 * Applied Cryptography detail the general algorithm. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 #include "includes.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 #include "bignum.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 #include "rsa.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 "ssh.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 #include "random.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 #ifdef DROPBEAR_RSA
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	41 static void rsa_pad_em(dropbear_rsa_key * key,
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	42 const unsigned char * data, unsigned int len,
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	43 fp_int * rsa_em);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	44
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 /* Load a public rsa key from a buffer, initialising the values.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 * The key will have the same format as buf_put_rsa_key.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 * These should be freed with rsa_key_free.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	50 int buf_get_rsa_pub_key(buffer* buf, dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	52 int ret = DROPBEAR_FAILURE;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	53 TRACE(("enter buf_get_rsa_pub_key"))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	54 dropbear_assert(key != NULL);
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	55 key->e = m_malloc(sizeof(fp_int));
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	56 key->n = m_malloc(sizeof(fp_int));
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	57 m_fp_init_multi(key->e, key->n, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58 key->d = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 key->p = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60 key->q = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62 buf_incrpos(buf, 4+SSH_SIGNKEY_RSA_LEN); /* int + "ssh-rsa" */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	64 if (buf_getfpint(buf, key->e) == DROPBEAR_FAILURE
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	65 \|\| buf_getfpint(buf, key->n) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	66 TRACE(("leave buf_get_rsa_pub_key: failure"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	67 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	70 if (fp_count_bits(key->n) < MIN_RSA_KEYLEN) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	71 dropbear_log(LOG_WARNING, "RSA key too short");
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	72 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	75 TRACE(("leave buf_get_rsa_pub_key: success"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	76 ret = DROPBEAR_SUCCESS;
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	77 out:
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	78 if (ret == DROPBEAR_FAILURE) {
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	79 m_free(key->e);
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	80 m_free(key->n);
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	81 }
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	82 return ret;
4 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
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	85 /* Same as buf_get_rsa_pub_key, but reads private bits at the end.
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 * Loads a private rsa key from a buffer
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	88 int buf_get_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) {
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	89 int ret = DROPBEAR_FAILURE;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	91 TRACE(("enter buf_get_rsa_priv_key"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	92 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 if (buf_get_rsa_pub_key(buf, key) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	95 TRACE(("leave buf_get_rsa_priv_key: pub: ret == DROPBEAR_FAILURE"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 }
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	98
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	99 key->d = NULL;
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	100 key->p = NULL;
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	101 key->q = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	103 key->d = m_malloc(sizeof(fp_int));
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	104 fp_init(key->d);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	105 if (buf_getfpint(buf, key->d) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	106 TRACE(("leave buf_get_rsa_priv_key: d: ret == DROPBEAR_FAILURE"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	107 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108 }
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 if (buf->pos == buf->len) {
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	111 /* old Dropbear private keys didn't keep p and q, so we will ignore them*/
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112 } else {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	113 key->p = m_malloc(sizeof(fp_int));
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	114 key->q = m_malloc(sizeof(fp_int));
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	115 fp_init(key->p);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	116 fp_init(key->q);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	118 if (buf_getfpint(buf, key->p) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	119 TRACE(("leave buf_get_rsa_priv_key: p: ret == DROPBEAR_FAILURE"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	120 goto out;
4 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
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	123 if (buf_getfpint(buf, key->q) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	124 TRACE(("leave buf_get_rsa_priv_key: q: ret == DROPBEAR_FAILURE"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	125 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	129 ret = DROPBEAR_SUCCESS;
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	130 out:
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	131 if (ret == DROPBEAR_FAILURE) {
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	132 m_free(key->d);
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	133 m_free(key->p);
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	134 m_free(key->q);
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	135 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	136 TRACE(("leave buf_get_rsa_priv_key"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	137 return ret;
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 /* Clear and free the memory used by a public or private key */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	142 void rsa_key_free(dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	144 TRACE(("enter rsa_key_free"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 if (key == NULL) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	147 TRACE(("leave rsa_key_free: key == NULL"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150 if (key->d) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	151 fp_zero(key->d);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 m_free(key->d);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 if (key->e) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	155 fp_zero(key->e);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 m_free(key->e);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 if (key->n) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	159 fp_zero(key->n);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 m_free(key->n);
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 if (key->p) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	163 fp_zero(key->p);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 m_free(key->p);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 if (key->q) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	167 fp_zero(key->q);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168 m_free(key->q);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	169 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	170 m_free(key);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	171 TRACE(("leave rsa_key_free"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	172 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 /* Put the public rsa key into the buffer in the required format:
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 * string "ssh-rsa"
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	177 * fp_int e
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	178 * fp_int n
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179 */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	180 void buf_put_rsa_pub_key(buffer* buf, dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	182 TRACE(("enter buf_put_rsa_pub_key"))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	183 dropbear_assert(key != NULL);
4 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 buf_putstring(buf, SSH_SIGNKEY_RSA, SSH_SIGNKEY_RSA_LEN);
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	186 buf_putfpint(buf, key->e);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	187 buf_putfpint(buf, key->n);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	189 TRACE(("leave buf_put_rsa_pub_key"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 /* Same as buf_put_rsa_pub_key, but with the private "x" key appended */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	194 void buf_put_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	196 TRACE(("enter buf_put_rsa_priv_key"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	198 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199 buf_put_rsa_pub_key(buf, key);
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	200 buf_putfpint(buf, key->d);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202 /* new versions have p and q, old versions don't */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 if (key->p) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	204 buf_putfpint(buf, key->p);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206 if (key->q) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	207 buf_putfpint(buf, key->q);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	208 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	211 TRACE(("leave buf_put_rsa_priv_key"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215 #ifdef DROPBEAR_SIGNKEY_VERIFY
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 /* Verify a signature in buf, made on data by the key given.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	218 int buf_rsa_verify(buffer * buf, dropbear_rsa_key key, const unsigned char data,
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219 unsigned int len) {
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 unsigned int slen;
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	222 DEF_FP_INT(rsa_s);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	223 DEF_FP_INT(rsa_mdash);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	224 DEF_FP_INT(rsa_em);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 int ret = DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	227 TRACE(("enter buf_rsa_verify"))
34 e2a1eaa19f22 Client mostly works up to password auth Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	228
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	229 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	231 fp_init(&rsa_mdash);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	232 fp_init(&rsa_s);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	233 fp_init(&rsa_em);
4 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 slen = buf_getint(buf);
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	236 if (slen != (unsigned int)fp_unsigned_bin_size(key->n)) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	237 TRACE(("bad size"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 goto out;
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
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	241 fp_read_unsigned_bin(&rsa_s, buf_getptr(buf, buf->len - buf->pos),
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	242 buf->len - buf->pos);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 /* check that s <= n-1 */
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	245 if (fp_cmp(&rsa_s, key->n) != FP_LT) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	246 TRACE(("s > n-1"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247 goto out;
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 /* create the magic PKCS padded value */
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	251 rsa_pad_em(key, data, len, &rsa_em);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	253 if (fp_exptmod(&rsa_s, key->e, key->n, &rsa_mdash) != FP_OKAY) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	254 TRACE(("failed exptmod rsa_s"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255 goto out;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	256 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	257
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	258 if (fp_cmp(&rsa_em, &rsa_mdash) == FP_EQ) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259 /* signature is valid */
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	260 TRACE(("success!"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261 ret = DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264 out:
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	265 fp_zero(&rsa_mdash);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	266 fp_zero(&rsa_s);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	267 fp_zero(&rsa_em);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	268
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	269 TRACE(("leave buf_rsa_verify: ret %d", ret))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 return ret;
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	271 }
4 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 #endif /* DROPBEAR_SIGNKEY_VERIFY */
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 /* Sign the data presented with key, writing the signature contents
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276 * to the buffer */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	277 void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key key, const unsigned char data,
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 unsigned int len) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280 unsigned int nsize, ssize;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281 unsigned int i;
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	282 DEF_FP_INT(rsa_s);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	283 DEF_FP_INT(rsa_tmp1);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	284 DEF_FP_INT(rsa_tmp2);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	285 DEF_FP_INT(rsa_tmp3);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	287 TRACE(("enter buf_put_rsa_sign"))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	288 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	290 fp_init(&rsa_s);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	291 fp_init(&rsa_tmp1);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	292 fp_init(&rsa_tmp2);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	293 fp_init(&rsa_tmp3);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	295 rsa_pad_em(key, data, len, &rsa_tmp1);
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	296
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	297 /* the actual signing of the padded data */
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	298
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	299 #ifdef RSA_BLINDING
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	300
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	301 /* With blinding, s = (r^(-1))((em)r^e)^d mod n /
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	302
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	303 /* generate the r blinding value */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	304 /* rsa_tmp2 is r */
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	305 gen_random_fpint(key->n, &rsa_tmp2);
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	306
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	307 /* rsa_tmp1 is em */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	308 /* em' = em * r^e mod n */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	309
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	310 /* rsa_s used as a temp var*/
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	311 if (fp_exptmod(&rsa_tmp2, key->e, key->n, &rsa_s) != FP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	312 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	313 }
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	314 if (fp_invmod(&rsa_tmp2, key->n, &rsa_tmp3) != FP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	315 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	316 }
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	317 if (fp_mulmod(&rsa_tmp1, &rsa_s, key->n, &rsa_tmp2) != FP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	318 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	319 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	320
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	321 /* rsa_tmp2 is em' */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	322 /* s' = (em')^d mod n */
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	323 if (fp_exptmod(&rsa_tmp2, key->d, key->n, &rsa_tmp1) != FP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	324 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	325 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	326
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	327 /* rsa_tmp1 is s' */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	328 /* rsa_tmp3 is r^(-1) mod n */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	329 /* s = (s')r^(-1) mod n */
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	330 if (fp_mulmod(&rsa_tmp1, &rsa_tmp3, key->n, &rsa_s) != FP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	331 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	332 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	333
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	334 #else
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	335
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	336 /* s = em^d mod n */
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	337 /* rsa_tmp1 is em */
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	338 if (fp_exptmod(&rsa_tmp1, key->d, key->n, &rsa_s) != FP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	339 dropbear_exit("RSA error");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	340 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	341
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	342 #endif /* RSA_BLINDING */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	343
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	344 m_fp_zero_multi(&rsa_tmp1, &rsa_tmp2, &rsa_tmp3, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	345
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	346 /* create the signature to return */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	347 buf_putstring(buf, SSH_SIGNKEY_RSA, SSH_SIGNKEY_RSA_LEN);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	348
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	349 nsize = fp_unsigned_bin_size(key->n);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	350
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351 /* string rsa_signature_blob length */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	352 buf_putint(buf, nsize);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	353 /* pad out s to same length as n */
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	354 ssize = fp_unsigned_bin_size(&rsa_s);
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	355 dropbear_assert(ssize <= nsize);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356 for (i = 0; i < nsize-ssize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	357 buf_putbyte(buf, 0x00);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	358 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	359
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	360 fp_to_unsigned_bin(&rsa_s, buf_getwriteptr(buf, ssize));
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	361
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362 buf_incrwritepos(buf, ssize);
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	363 fp_zero(&rsa_s);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	364
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	365 #if defined(DEBUG_RSA) && defined(DEBUG_TRACE)
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	366 printhex("RSA sig", buf->data, buf->len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367 #endif
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
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	370 TRACE(("leave buf_put_rsa_sign"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	372
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	373 /* Creates the message value as expected by PKCS, see rfc2437 etc */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	374 /* format to be padded to is:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	375 * EM = 01 \| FF* \| 00 \| prefix \| hash
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	376 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	377 * where FF is repeated enough times to make EM one byte
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	378 * shorter than the size of key->n
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	380 * prefix is the ASN1 designator prefix,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381 * hex 30 21 30 09 06 05 2B 0E 03 02 1A 05 00 04 14
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	382 *
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	383 * rsa_em must be a pointer to an initialised fp_int.
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	384 */
642 33fd2f3499d2 A few build fixes Matt Johnston <matt@ucc.asn.au> parents: 641 diff changeset	385 static void rsa_pad_em(dropbear_rsa_key * key,
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	386 const unsigned char * data, unsigned int len,
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	387 fp_int * rsa_em) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	388
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	389 /* ASN1 designator (including the 0x00 preceding) */
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	390 const unsigned char rsa_asn1_magic[] =
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	391 {0x00, 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14};
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	393 const unsigned int RSA_ASN1_MAGIC_LEN = 16;
65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	394
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	395 buffer * rsa_EM = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	396 hash_state hs;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	397 unsigned int nsize;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	398
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	399 dropbear_assert(key != NULL);
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	400 dropbear_assert(data != NULL);
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	401 nsize = fp_unsigned_bin_size(key->n);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	402
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403 rsa_EM = buf_new(nsize-1);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	404 /* type byte */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 buf_putbyte(rsa_EM, 0x01);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	406 /* Padding with 0xFF bytes */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 while(rsa_EM->pos != rsa_EM->size - RSA_ASN1_MAGIC_LEN - SHA1_HASH_SIZE) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	408 buf_putbyte(rsa_EM, 0xff);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	409 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410 /* Magic ASN1 stuff */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	411 memcpy(buf_getwriteptr(rsa_EM, RSA_ASN1_MAGIC_LEN),
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	412 rsa_asn1_magic, RSA_ASN1_MAGIC_LEN);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413 buf_incrwritepos(rsa_EM, RSA_ASN1_MAGIC_LEN);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	414
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	415 /* The hash of the data */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 sha1_init(&hs);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	417 sha1_process(&hs, data, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	418 sha1_done(&hs, buf_getwriteptr(rsa_EM, SHA1_HASH_SIZE));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	419 buf_incrwritepos(rsa_EM, SHA1_HASH_SIZE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	420
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	421 dropbear_assert(rsa_EM->pos == rsa_EM->size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	422
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	423 /* Create the fp_int from the encoded bytes */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	424 buf_setpos(rsa_EM, 0);
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	425 bytes_to_fp(rsa_em, buf_getptr(rsa_EM, rsa_EM->size),
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	426 rsa_EM->size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	427 buf_free(rsa_EM);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	428 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	429
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 #endif /* DROPBEAR_RSA */

Mercurial > dropbear

annotate rsa.c @ 647:939cd3e22c87 dropbear-tfm