dropbear: common-kex.c annotate

annotate common-kex.c @ 761:ac2158e3e403 ecc

ecc kind of works, needs fixing/testing

author	Matt Johnston <matt@ucc.asn.au>
date	Sun, 07 Apr 2013 01:36:42 +0800
parents	76fba0856749
children	a78a38e402d1

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
74 e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 36 diff changeset	2 * Dropbear SSH
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	4 * Copyright (c) 2002-2004 Matt Johnston
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * Portions Copyright (c) 2004 by Mihnea Stoenescu
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * 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	9 * 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	10 * 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	11 * 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	12 * 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	13 * 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	14 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * 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	16 * all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * 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	19 * 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	20 * 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	21 * 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	22 * 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	23 * 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	24 * SOFTWARE. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 #include "includes.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 #include "algo.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 #include "buffer.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 #include "session.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 #include "kex.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 #include "ssh.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 #include "packet.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 "random.h"
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	36 #include "runopts.h"
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	37 #include "ecc.h"
4 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 /* diffie-hellman-group1-sha1 value for p */
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	40 const unsigned char dh_p_1[DH_P_1_LEN] = {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE6, 0x53, 0x81,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52
595 2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	53 /* diffie-hellman-group14-sha1 value for p */
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	54 const unsigned char dh_p_14[DH_P_14_LEN] = {
595 2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	55 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	56 0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	57 0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	58 0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	59 0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	60 0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	61 0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	62 0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	63 0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	64 0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	65 0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05, 0x98, 0xDA, 0x48, 0x36,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	66 0x1C, 0x55, 0xD3, 0x9A, 0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	67 0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96, 0x1C, 0x62, 0xF3, 0x56,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	68 0x20, 0x85, 0x52, 0xBB, 0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	69 0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04, 0xF1, 0x74, 0x6C, 0x08,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	70 0xCA, 0x18, 0x21, 0x7C, 0x32, 0x90, 0x5E, 0x46, 0x2E, 0x36, 0xCE, 0x3B,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	71 0xE3, 0x9E, 0x77, 0x2C, 0x18, 0x0E, 0x86, 0x03, 0x9B, 0x27, 0x83, 0xA2,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	72 0xEC, 0x07, 0xA2, 0x8F, 0xB5, 0xC5, 0x5D, 0xF0, 0x6F, 0x4C, 0x52, 0xC9,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	73 0xDE, 0x2B, 0xCB, 0xF6, 0x95, 0x58, 0x17, 0x18, 0x39, 0x95, 0x49, 0x7C,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	74 0xEA, 0x95, 0x6A, 0xE5, 0x15, 0xD2, 0x26, 0x18, 0x98, 0xFA, 0x05, 0x10,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	75 0x15, 0x72, 0x8E, 0x5A, 0x8A, 0xAC, 0xAA, 0x68, 0xFF, 0xFF, 0xFF, 0xFF,
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	76 0xFF, 0xFF, 0xFF, 0xFF};
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	77
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	78 /* Same for group1 and group14 */
227 ad1b24e39bf3 Make a variables static Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	79 static const int DH_G_VAL = 2;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	81 static void kexinitialise();
35 0ad5fb979f42 set the isserver flag (oops) Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	82 void gen_new_keys();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83 #ifndef DISABLE_ZLIB
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 static void gen_new_zstreams();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85 #endif
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	86 static void read_kex_algos();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 /* helper function for gen_new_keys */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88 static void hashkeys(unsigned char *out, int outlen,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 const hash_state * hs, unsigned const char X);
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	90 static void finish_kexhashbuf(void);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91
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 /* Send our list of algorithms we can use */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 void send_msg_kexinit() {
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 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 buf_putbyte(ses.writepayload, SSH_MSG_KEXINIT);
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 /* cookie */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 genrandom(buf_getwriteptr(ses.writepayload, 16), 16);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 buf_incrwritepos(ses.writepayload, 16);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 /* kex algos */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104 buf_put_algolist(ses.writepayload, sshkex);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	106 /* server_host_key_algorithms */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107 buf_put_algolist(ses.writepayload, sshhostkey);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	109 /* encryption_algorithms_client_to_server */
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	110 buf_put_algolist(ses.writepayload, sshciphers);
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	111
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	112 /* encryption_algorithms_server_to_client */
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	113 buf_put_algolist(ses.writepayload, sshciphers);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	115 /* mac_algorithms_client_to_server */
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	116 buf_put_algolist(ses.writepayload, sshhashes);
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	117
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	118 /* mac_algorithms_server_to_client */
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	119 buf_put_algolist(ses.writepayload, sshhashes);
4 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 /* compression_algorithms_client_to_server */
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	123 buf_put_algolist(ses.writepayload, ses.compress_algos);
4 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 /* compression_algorithms_server_to_client */
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	126 buf_put_algolist(ses.writepayload, ses.compress_algos);
4 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 /* languages_client_to_server */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 buf_putstring(ses.writepayload, "", 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	131 /* languages_server_to_client */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	132 buf_putstring(ses.writepayload, "", 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	134 /* first_kex_packet_follows - unimplemented for now */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135 buf_putbyte(ses.writepayload, 0x00);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137 /* reserved unit32 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 buf_putint(ses.writepayload, 0);
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 /* set up transmitted kex packet buffer for hashing.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 * This is freed after the end of the kex */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 ses.transkexinit = buf_newcopy(ses.writepayload);
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 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 ses.dataallowed = 0; /* don't send other packets during kex */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	147 TRACE(("DATAALLOWED=0"))
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	148 TRACE(("-> KEXINIT"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 ses.kexstate.sentkexinit = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 /* * NOTE regarding (send\|recv)_msg_newkeys *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 * Changed by mihnea from the original kex.c to set dataallowed after a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 * completed key exchange, no matter the order in which it was performed.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 * This enables client mode without affecting server functionality.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 */
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 /* Bring new keys into use after a key exchange, and let the client know*/
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 void send_msg_newkeys() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	161 TRACE(("enter send_msg_newkeys"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 /* generate the kexinit request */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165 buf_putbyte(ses.writepayload, SSH_MSG_NEWKEYS);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	169 /* set up our state */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	170 if (ses.kexstate.recvnewkeys) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	171 TRACE(("while RECVNEWKEYS=1"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	172 gen_new_keys();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173 kexinitialise(); /* we've finished with this kex */
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	174 TRACE((" -> DATAALLOWED=1"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175 ses.dataallowed = 1; /* we can send other packets again now */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	176 ses.kexstate.donefirstkex = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	177 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 ses.kexstate.sentnewkeys = 1;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	179 TRACE(("SENTNEWKEYS=1"))
4 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
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	182 TRACE(("-> MSG_NEWKEYS"))
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	183 TRACE(("leave send_msg_newkeys"))
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186 /* Bring the new keys into use after a key exchange */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	187 void recv_msg_newkeys() {
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: 116 diff changeset	189 TRACE(("<- MSG_NEWKEYS"))
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	190 TRACE(("enter recv_msg_newkeys"))
4 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 /* simply check if we've sent SSH_MSG_NEWKEYS, and if so,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 * switch to the new keys */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 if (ses.kexstate.sentnewkeys) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	195 TRACE(("while SENTNEWKEYS=1"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196 gen_new_keys();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 kexinitialise(); /* we've finished with this kex */
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	198 TRACE((" -> DATAALLOWED=1"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199 ses.dataallowed = 1; /* we can send other packets again now */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	200 ses.kexstate.donefirstkex = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 } else {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	202 TRACE(("RECVNEWKEYS=1"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 ses.kexstate.recvnewkeys = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	206 TRACE(("leave recv_msg_newkeys"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207 }
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
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	210 /* Set up the kex for the first time */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	211 void kexfirstinitialise() {
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	212 ses.kexstate.donefirstkex = 0;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	213
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	214 #ifndef DISABLE_ZLIB
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	215 if (opts.enable_compress) {
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	216 ses.compress_algos = ssh_compress;
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	217 } else
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	218 #endif
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	219 {
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	220 ses.compress_algos = ssh_nocompress;
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	221 }
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	222 kexinitialise();
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	223 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	224
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	225 /* Reset the kex state, ready for a new negotiation */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	226 static void kexinitialise() {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	228 TRACE(("kexinitialise()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 /* sent/recv'd MSG_KEXINIT */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231 ses.kexstate.sentkexinit = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 ses.kexstate.recvkexinit = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234 /* sent/recv'd MSG_NEWKEYS */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235 ses.kexstate.recvnewkeys = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236 ses.kexstate.sentnewkeys = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 /* first_packet_follows */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239 ses.kexstate.firstfollows = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 ses.kexstate.datatrans = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 ses.kexstate.datarecv = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243
454 7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	244 ses.kexstate.lastkextime = time(NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	246 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 /* Helper function for gen_new_keys, creates a hash. It makes a copy of the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 * already initialised hash_state hs, which should already have processed
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 * the dh_K and hash, since these are common. X is the letter 'A', 'B' etc.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 * out must have at least min(SHA1_HASH_SIZE, outlen) bytes allocated.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252 *
409 0e69e948caba Add comments about requiring keysize <= 2SHA1_HASH_SIZE Matt Johnston <matt@ucc.asn.au>* parents: 257 diff changeset	253 * See Section 7.2 of rfc4253 (ssh transport) for details */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254 static void hashkeys(unsigned char *out, int outlen,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255 const hash_state * hs, const unsigned char X) {
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 hash_state hs2;
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	258 int offset;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260 memcpy(&hs2, hs, sizeof(hash_state));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261 sha1_process(&hs2, &X, 1);
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	262 sha1_process(&hs2, ses.session_id->data, ses.session_id->len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 sha1_done(&hs2, out);
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	264 for (offset = SHA1_HASH_SIZE;
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	265 offset < outlen;
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	266 offset += SHA1_HASH_SIZE)
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	267 {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268 /* need to extend */
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	269 unsigned char k2[SHA1_HASH_SIZE];
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 memcpy(&hs2, hs, sizeof(hash_state));
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	271 sha1_process(&hs2, out, offset);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272 sha1_done(&hs2, k2);
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 648 diff changeset	273 memcpy(&out[offset], k2, MIN(outlen - offset, SHA1_HASH_SIZE));
4 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 /* Generate the actual encryption/integrity keys, using the results of the
603 3aa74a4d83ae Refer to RFCs rather than drafts, update some section references Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	278 * key exchange, as specified in section 7.2 of the transport rfc 4253.
3aa74a4d83ae Refer to RFCs rather than drafts, update some section references Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	279 * This occurs after the DH key-exchange.
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281 * ses.newkeys is the new set of keys which are generated, these are only
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282 * taken into use after both sides have sent a newkeys message */
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 /* Originally from kex.c, generalized for cli/svr mode --mihnea */
35 0ad5fb979f42 set the isserver flag (oops) Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	285 void gen_new_keys() {
4 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 unsigned char C2S_IV[MAX_IV_LEN];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288 unsigned char C2S_key[MAX_KEY_LEN];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 unsigned char S2C_IV[MAX_IV_LEN];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 unsigned char S2C_key[MAX_KEY_LEN];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 /* unsigned char key[MAX_KEY_LEN]; */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 unsigned char trans_IV, trans_key, recv_IV, recv_key;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 hash_state hs;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 unsigned int C2S_keysize, S2C_keysize;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296 char mactransletter, macrecvletter; /* Client or server specific */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	297
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	298 TRACE(("enter gen_new_keys"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299 /* the dh_K and hash are the start of all hashes, we make use of that */
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 sha1_init(&hs);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 sha1_process_mp(&hs, ses.dh_K);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	303 mp_clear(ses.dh_K);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	304 m_free(ses.dh_K);
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	305 sha1_process(&hs, ses.hash->data, ses.hash->len);
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	306 buf_burn(ses.hash);
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	307 buf_free(ses.hash);
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	308 ses.hash = NULL;
4 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 if (IS_DROPBEAR_CLIENT) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	311 trans_IV = C2S_IV;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 recv_IV = S2C_IV;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313 trans_key = C2S_key;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	314 recv_key = S2C_key;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	315 C2S_keysize = ses.newkeys->trans.algo_crypt->keysize;
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	316 S2C_keysize = ses.newkeys->recv.algo_crypt->keysize;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	317 mactransletter = 'E';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	318 macrecvletter = 'F';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	319 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320 trans_IV = S2C_IV;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 recv_IV = C2S_IV;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322 trans_key = S2C_key;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 recv_key = C2S_key;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	324 C2S_keysize = ses.newkeys->recv.algo_crypt->keysize;
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	325 S2C_keysize = ses.newkeys->trans.algo_crypt->keysize;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	326 mactransletter = 'F';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 macrecvletter = 'E';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329
35 0ad5fb979f42 set the isserver flag (oops) Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	330 hashkeys(C2S_IV, SHA1_HASH_SIZE, &hs, 'A');
0ad5fb979f42 set the isserver flag (oops) Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	331 hashkeys(S2C_IV, SHA1_HASH_SIZE, &hs, 'B');
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332 hashkeys(C2S_key, C2S_keysize, &hs, 'C');
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333 hashkeys(S2C_key, S2C_keysize, &hs, 'D');
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	335 if (ses.newkeys->recv.algo_crypt->cipherdesc != NULL) {
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	336 int recv_cipher = find_cipher(ses.newkeys->recv.algo_crypt->cipherdesc->name);
512 0129fd8ccc71 Update nocrypto branch to current head Matt Johnston <matt@ucc.asn.au> parents: 511 diff changeset	337 if (recv_cipher < 0)
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	338 dropbear_exit("Crypto error");
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	339 if (ses.newkeys->recv.crypt_mode->start(recv_cipher,
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	340 recv_IV, recv_key,
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	341 ses.newkeys->recv.algo_crypt->keysize, 0,
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	342 &ses.newkeys->recv.cipher_state) != CRYPT_OK) {
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	343 dropbear_exit("Crypto error");
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	344 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	345 }
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	346
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	347 if (ses.newkeys->trans.algo_crypt->cipherdesc != NULL) {
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	348 int trans_cipher = find_cipher(ses.newkeys->trans.algo_crypt->cipherdesc->name);
512 0129fd8ccc71 Update nocrypto branch to current head Matt Johnston <matt@ucc.asn.au> parents: 511 diff changeset	349 if (trans_cipher < 0)
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	350 dropbear_exit("Crypto error");
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	351 if (ses.newkeys->trans.crypt_mode->start(trans_cipher,
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	352 trans_IV, trans_key,
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	353 ses.newkeys->trans.algo_crypt->keysize, 0,
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	354 &ses.newkeys->trans.cipher_state) != CRYPT_OK) {
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	355 dropbear_exit("Crypto error");
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	356 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	357 }
512 0129fd8ccc71 Update nocrypto branch to current head Matt Johnston <matt@ucc.asn.au> parents: 511 diff changeset	358
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	359 if (ses.newkeys->trans.algo_mac->hashdesc != NULL) {
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	360 hashkeys(ses.newkeys->trans.mackey,
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	361 ses.newkeys->trans.algo_mac->keysize, &hs, mactransletter);
712 bf0ac0512ef7 Fix "-m none" case and ugly typo Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	362 ses.newkeys->trans.hash_index = find_hash(ses.newkeys->trans.algo_mac->hashdesc->name);
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	363 }
712 bf0ac0512ef7 Fix "-m none" case and ugly typo Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	364
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	365 if (ses.newkeys->recv.algo_mac->hashdesc != NULL) {
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	366 hashkeys(ses.newkeys->recv.mackey,
a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	367 ses.newkeys->recv.algo_mac->keysize, &hs, macrecvletter);
712 bf0ac0512ef7 Fix "-m none" case and ugly typo Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	368 ses.newkeys->recv.hash_index = find_hash(ses.newkeys->recv.algo_mac->hashdesc->name);
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	369 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	370
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371 #ifndef DISABLE_ZLIB
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	372 gen_new_zstreams();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	373 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	374
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	375 /* Switch over to the new keys */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	376 m_burn(ses.keys, sizeof(struct key_context));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	377 m_free(ses.keys);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	378 ses.keys = ses.newkeys;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379 ses.newkeys = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	380
648 4222a1039b06 Clear a few buffers when possible Matt Johnston <matt@ucc.asn.au> parents: 603 diff changeset	381 m_burn(C2S_IV, sizeof(C2S_IV));
4222a1039b06 Clear a few buffers when possible Matt Johnston <matt@ucc.asn.au> parents: 603 diff changeset	382 m_burn(C2S_key, sizeof(C2S_key));
4222a1039b06 Clear a few buffers when possible Matt Johnston <matt@ucc.asn.au> parents: 603 diff changeset	383 m_burn(S2C_IV, sizeof(S2C_IV));
4222a1039b06 Clear a few buffers when possible Matt Johnston <matt@ucc.asn.au> parents: 603 diff changeset	384 m_burn(S2C_key, sizeof(S2C_key));
4222a1039b06 Clear a few buffers when possible Matt Johnston <matt@ucc.asn.au> parents: 603 diff changeset	385
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	386 TRACE(("leave gen_new_keys"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	387 }
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 #ifndef DISABLE_ZLIB
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	390
d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	391 int is_compress_trans() {
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	392 return ses.keys->trans.algo_comp == DROPBEAR_COMP_ZLIB
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	393 \|\| (ses.authstate.authdone
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	394 && ses.keys->trans.algo_comp == DROPBEAR_COMP_ZLIB_DELAY);
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	395 }
d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	396
d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	397 int is_compress_recv() {
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	398 return ses.keys->recv.algo_comp == DROPBEAR_COMP_ZLIB
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	399 \|\| (ses.authstate.authdone
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	400 && ses.keys->recv.algo_comp == DROPBEAR_COMP_ZLIB_DELAY);
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	401 }
d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	402
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403 /* Set up new zlib compression streams, close the old ones. Only
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	404 * called from gen_new_keys() */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 static void gen_new_zstreams() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	406
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 /* create new zstreams */
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	408 if (ses.newkeys->recv.algo_comp == DROPBEAR_COMP_ZLIB
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	409 \|\| ses.newkeys->recv.algo_comp == DROPBEAR_COMP_ZLIB_DELAY) {
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	410 ses.newkeys->recv.zstream = (z_streamp)m_malloc(sizeof(z_stream));
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	411 ses.newkeys->recv.zstream->zalloc = Z_NULL;
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	412 ses.newkeys->recv.zstream->zfree = Z_NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	414 if (inflateInit(ses.newkeys->recv.zstream) != Z_OK) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	415 dropbear_exit("zlib error");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	417 } else {
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	418 ses.newkeys->recv.zstream = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	419 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	420
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	421 if (ses.newkeys->trans.algo_comp == DROPBEAR_COMP_ZLIB
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	422 \|\| ses.newkeys->trans.algo_comp == DROPBEAR_COMP_ZLIB_DELAY) {
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	423 ses.newkeys->trans.zstream = (z_streamp)m_malloc(sizeof(z_stream));
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	424 ses.newkeys->trans.zstream->zalloc = Z_NULL;
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	425 ses.newkeys->trans.zstream->zfree = Z_NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	426
555 daf52f813328 - Add option to change zlib windowBits/memLevel Matt Johnston <matt@ucc.asn.au> parents: 534 diff changeset	427 if (deflateInit2(ses.newkeys->trans.zstream, Z_DEFAULT_COMPRESSION,
daf52f813328 - Add option to change zlib windowBits/memLevel Matt Johnston <matt@ucc.asn.au> parents: 534 diff changeset	428 Z_DEFLATED, DROPBEAR_ZLIB_WINDOW_BITS,
daf52f813328 - Add option to change zlib windowBits/memLevel Matt Johnston <matt@ucc.asn.au> parents: 534 diff changeset	429 DROPBEAR_ZLIB_MEM_LEVEL, Z_DEFAULT_STRATEGY)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 != Z_OK) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	431 dropbear_exit("zlib error");
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 } else {
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	434 ses.newkeys->trans.zstream = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	435 }
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	436
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	437 /* clean up old keys */
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	438 if (ses.keys->recv.zstream != NULL) {
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	439 if (inflateEnd(ses.keys->recv.zstream) == Z_STREAM_ERROR) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	440 /* Z_DATA_ERROR is ok, just means that stream isn't ended */
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 575 diff changeset	441 dropbear_exit("Crypto error");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442 }
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	443 m_free(ses.keys->recv.zstream);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	444 }
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	445 if (ses.keys->trans.zstream != NULL) {
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	446 if (deflateEnd(ses.keys->trans.zstream) == Z_STREAM_ERROR) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	447 /* Z_DATA_ERROR is ok, just means that stream isn't ended */
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 575 diff changeset	448 dropbear_exit("Crypto error");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	449 }
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	450 m_free(ses.keys->trans.zstream);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	451 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	452 }
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 454 diff changeset	453 #endif /* DISABLE_ZLIB */
4 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 /* Executed upon receiving a kexinit message from the client to initiate
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	457 * key exchange. If we haven't already done so, we send the list of our
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	458 * preferred algorithms. The client's requested algorithms are processed,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	459 * and we calculate the first portion of the key-exchange-hash for used
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	460 * later in the key exchange. No response is sent, as the client should
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	461 * initiate the diffie-hellman key exchange */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	462
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	463 /* Originally from kex.c, generalized for cli/svr mode --mihnea */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	464 /* Belongs in common_kex.c where it should be moved after review */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	465 void recv_msg_kexinit() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	466
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	467 unsigned int kexhashbuf_len = 0;
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	468 unsigned int remote_ident_len = 0;
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	469 unsigned int local_ident_len = 0;
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	470
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	471 TRACE(("<- KEXINIT"))
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	472 TRACE(("enter recv_msg_kexinit"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	473
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	474 if (!ses.kexstate.sentkexinit) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	475 /* we need to send a kex packet */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	476 send_msg_kexinit();
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	477 TRACE(("continue recv_msg_kexinit: sent kexinit"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	478 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	479
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	480 /* start the kex hash */
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	481 local_ident_len = strlen(LOCAL_IDENT);
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	482 remote_ident_len = strlen((char*)ses.remoteident);
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	483
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	484 kexhashbuf_len = local_ident_len + remote_ident_len
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	485 + ses.transkexinit->len + ses.payload->len
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	486 + KEXHASHBUF_MAX_INTS;
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	487
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	488 ses.kexhashbuf = buf_new(kexhashbuf_len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	489
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	490 if (IS_DROPBEAR_CLIENT) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	491
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	492 /* read the peer's choice of algos */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	493 read_kex_algos();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	494
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	495 /* V_C, the client's version string (CR and NL excluded) */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	496 buf_putstring(ses.kexhashbuf,
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	497 (unsigned char*)LOCAL_IDENT, local_ident_len);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	498 /* V_S, the server's version string (CR and NL excluded) */
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	499 buf_putstring(ses.kexhashbuf, ses.remoteident, remote_ident_len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	500
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	501 /* I_C, the payload of the client's SSH_MSG_KEXINIT */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	502 buf_putstring(ses.kexhashbuf,
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	503 ses.transkexinit->data, ses.transkexinit->len);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	504 /* I_S, the payload of the server's SSH_MSG_KEXINIT */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	505 buf_setpos(ses.payload, 0);
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	506 buf_putstring(ses.kexhashbuf, ses.payload->data, ses.payload->len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	507
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	508 } else {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	509 /* SERVER */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	510
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	511 /* read the peer's choice of algos */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	512 read_kex_algos();
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	513 /* V_C, the client's version string (CR and NL excluded) */
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	514 buf_putstring(ses.kexhashbuf, ses.remoteident, remote_ident_len);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	515 /* V_S, the server's version string (CR and NL excluded) */
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	516 buf_putstring(ses.kexhashbuf,
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	517 (unsigned char*)LOCAL_IDENT, local_ident_len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	518
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	519 /* I_C, the payload of the client's SSH_MSG_KEXINIT */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	520 buf_setpos(ses.payload, 0);
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	521 buf_putstring(ses.kexhashbuf, ses.payload->data, ses.payload->len);
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	522
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	523 /* I_S, the payload of the server's SSH_MSG_KEXINIT */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	524 buf_putstring(ses.kexhashbuf,
257 63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	525 ses.transkexinit->data, ses.transkexinit->len);
63601217f5ab * options.h, common-kex.c: fix support of 4096 byte host keys Matt Johnston <matt@ucc.asn.au> parents: 228 diff changeset	526
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	527 ses.requirenext = SSH_MSG_KEXDH_INIT;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	528 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	529
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	530 buf_free(ses.transkexinit);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	531 ses.transkexinit = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	532 /* the rest of ses.kexhashbuf will be done after DH exchange */
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 ses.kexstate.recvkexinit = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	535
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	536 TRACE(("leave recv_msg_kexinit"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	537 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	538
595 2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	539 static void load_dh_p(mp_int * dh_p)
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	540 {
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	541 bytes_to_mp(dh_p, ses.newkeys->algo_kex->dh_p_bytes,
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	542 ses.newkeys->algo_kex->dh_p_len);
595 2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	543 }
2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	544
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	545 /* Initialises and generate one side of the diffie-hellman key exchange values.
603 3aa74a4d83ae Refer to RFCs rather than drafts, update some section references Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	546 * See the transport rfc 4253 section 8 for details */
84 29a5c7c62350 default initialisers for mp_ints Matt Johnston <matt@ucc.asn.au> parents: 79 diff changeset	547 /* dh_pub and dh_priv MUST be already initialised */
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	548 struct kex_dh_param *gen_kexdh_param() {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	549
84 29a5c7c62350 default initialisers for mp_ints Matt Johnston <matt@ucc.asn.au> parents: 79 diff changeset	550 DEF_MP_INT(dh_p);
29a5c7c62350 default initialisers for mp_ints Matt Johnston <matt@ucc.asn.au> parents: 79 diff changeset	551 DEF_MP_INT(dh_q);
29a5c7c62350 default initialisers for mp_ints Matt Johnston <matt@ucc.asn.au> parents: 79 diff changeset	552 DEF_MP_INT(dh_g);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	553
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	554 TRACE(("enter send_msg_kexdh_reply"))
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	555
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	556 struct kex_dh_param param = m_malloc(sizeof(param));
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	557 m_mp_init_multi(&param->pub, &param->priv, NULL);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	558
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	559 /* read the prime and generator*/
595 2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	560 load_dh_p(&dh_p);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	561
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	562 if (mp_set_int(&dh_g, DH_G_VAL) != MP_OKAY) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	563 dropbear_exit("Diffie-Hellman error");
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	564 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	565
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	566 /* calculate q = (p-1)/2 */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	567 /* dh_priv is just a temp var here */
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	568 if (mp_sub_d(&dh_p, 1, &param->priv) != MP_OKAY) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	569 dropbear_exit("Diffie-Hellman error");
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	570 }
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	571 if (mp_div_2(&param->priv, &dh_q) != MP_OKAY) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	572 dropbear_exit("Diffie-Hellman error");
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	573 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	574
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	575 /* Generate a private portion 0 < dh_priv < dh_q */
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	576 gen_random_mpint(&dh_q, &param->priv);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	577
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	578 /* f = g^y mod p */
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	579 if (mp_exptmod(&dh_g, &param->priv, &dh_p, &param->pub) != MP_OKAY) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	580 dropbear_exit("Diffie-Hellman error");
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	581 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	582 mp_clear_multi(&dh_g, &dh_p, &dh_q, NULL);
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	583 return param;
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	584 }
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	585
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	586 void free_kexdh_param(struct kex_dh_param *param)
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	587 {
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	588 mp_clear_multi(&param->pub, &param->priv, NULL);
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	589 m_free(param);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	590 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	591
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	592 /* This function is fairly common between client/server, with some substitution
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	593 * of dh_e/dh_f etc. Hence these arguments:
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	594 * dh_pub_us is 'e' for the client, 'f' for the server. dh_pub_them is
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	595 * vice-versa. dh_priv is the x/y value corresponding to dh_pub_us */
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	596 void kexdh_comb_key(struct kex_dh_param param, mp_int dh_pub_them,
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	597 sign_key *hostkey) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	598
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	599 mp_int dh_p;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	600 mp_int dh_e = NULL, dh_f = NULL;
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	601
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	602 /* read the prime and generator*/
342 3e098639b05f From Erik Hovland Matt Johnston <matt@ucc.asn.au> parents: 257 diff changeset	603 m_mp_init(&dh_p);
595 2895626d864f Add diffie-hellman-group14-sha1 KEX method Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	604 load_dh_p(&dh_p);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	605
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	606 /* Check that dh_pub_them (dh_e or dh_f) is in the range [1, p-1] */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	607 if (mp_cmp(dh_pub_them, &dh_p) != MP_LT
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	608 \|\| mp_cmp_d(dh_pub_them, 0) != MP_GT) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	609 dropbear_exit("Diffie-Hellman error");
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	610 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	611
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	612 /* K = e^y mod p = f^x mod p */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	613 ses.dh_K = (mp_int*)m_malloc(sizeof(mp_int));
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	614 m_mp_init(ses.dh_K);
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	615 if (mp_exptmod(dh_pub_them, &param->priv, &dh_p, ses.dh_K) != MP_OKAY) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	616 dropbear_exit("Diffie-Hellman error");
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	617 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	618
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	619 /* clear no longer needed vars */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	620 mp_clear_multi(&dh_p, NULL);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	621
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	622 /* From here on, the code needs to work with the _same_ vars on each side,
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	623 * not vice-versaing for client/server */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	624 if (IS_DROPBEAR_CLIENT) {
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	625 dh_e = &param->pub;
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	626 dh_f = dh_pub_them;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	627 } else {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	628 dh_e = dh_pub_them;
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	629 dh_f = &param->pub;
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	630 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	631
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	632 /* Create the remainder of the hash buffer, to generate the exchange hash */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	633 /* K_S, the host key */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	634 buf_put_pub_key(ses.kexhashbuf, hostkey, ses.newkeys->algo_hostkey);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	635 /* e, exchange value sent by the client */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	636 buf_putmpint(ses.kexhashbuf, dh_e);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	637 /* f, exchange value sent by the server */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	638 buf_putmpint(ses.kexhashbuf, dh_f);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	639 /* K, the shared secret */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	640 buf_putmpint(ses.kexhashbuf, ses.dh_K);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	641
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	642 /* calculate the hash H to sign */
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	643 finish_kexhashbuf();
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	644 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	645
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	646 #ifdef DROPBEAR_ECDH
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	647 struct kex_ecdh_param *gen_kexecdh_param() {
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	648 struct kex_ecdh_param param = m_malloc(sizeof(param));
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	649 if (ecc_make_key_ex(NULL, dropbear_ltc_prng,
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	650 &param->key, ses.newkeys->algo_kex->ecc_curve->dp) != CRYPT_OK) {
76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	651 dropbear_exit("ECC error");
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	652 }
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	653 return param;
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	654 }
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	655
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	656 void free_kexecdh_param(struct kex_ecdh_param *param) {
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	657 ecc_free(&param->key);
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	658 m_free(param);
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	659
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	660 }
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	661 void kexecdh_comb_key(struct kex_ecdh_param param, buffer pub_them,
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	662 sign_key *hostkey) {
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	663 const struct dropbear_kex *algo_kex = ses.newkeys->algo_kex;
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	664 hash_state hs;
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	665 // public keys from client and server
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	666 ecc_key Q_C, Q_S, *Q_them;
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	667
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	668 // XXX load Q_them
76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	669 Q_them = buf_get_ecc_pubkey(pub_them, algo_kex->ecc_curve);
757 230666086711 ecc key import function Matt Johnston <matt@ucc.asn.au> parents: 756 diff changeset	670
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	671 ses.dh_K = dropbear_ecc_shared_secret(Q_them, &param->key);
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	672
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	673 /* From here on, the code needs to work with the _same_ vars on each side,
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	674 * not vice-versaing for client/server */
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	675 if (IS_DROPBEAR_CLIENT) {
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	676 Q_C = &param->key;
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	677 Q_S = Q_them;
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	678 } else {
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	679 Q_C = Q_them;
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	680 Q_S = &param->key;
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	681 }
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	682
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	683 /* Create the remainder of the hash buffer, to generate the exchange hash */
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	684 /* K_S, the host key */
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	685 buf_put_pub_key(ses.kexhashbuf, hostkey, ses.newkeys->algo_hostkey);
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	686 /* Q_C, client's ephemeral public key octet string */
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	687 buf_put_ecc_pubkey_string(ses.kexhashbuf, Q_C);
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	688 /* Q_S, server's ephemeral public key octet string */
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	689 buf_put_ecc_pubkey_string(ses.kexhashbuf, Q_S);
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	690 /* K, the shared secret */
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	691 buf_putmpint(ses.kexhashbuf, ses.dh_K);
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	692
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	693 /* calculate the hash H to sign */
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	694 algo_kex->hashdesc->init(&hs);
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	695 buf_setpos(ses.kexhashbuf, 0);
759 76fba0856749 More changes for KEX and ECDH. Set up hash descriptors, make ECC code work, Matt Johnston <matt@ucc.asn.au> parents: 757 diff changeset	696 algo_kex->hashdesc->process(&hs, buf_getptr(ses.kexhashbuf, ses.kexhashbuf->len),
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	697 ses.kexhashbuf->len);
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	698
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	699 /* calculate the hash H to sign */
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	700 finish_kexhashbuf();
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	701 }
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	702 #endif
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	703
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	704 static void finish_kexhashbuf(void) {
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	705 hash_state hs;
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	706 const struct ltc_hash_descriptor *hashdesc = ses.newkeys->algo_kex->hashdesc;
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	707
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	708 hashdesc->init(&hs);
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	709 buf_setpos(ses.kexhashbuf, 0);
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	710 hashdesc->process(&hs, buf_getptr(ses.kexhashbuf, ses.kexhashbuf->len),
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	711 ses.kexhashbuf->len);
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	712 ses.hash = buf_new(hashdesc->hashsize);
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	713 hashdesc->done(&hs, buf_getwriteptr(ses.hash, hashdesc->hashsize));
ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	714 buf_setlen(ses.hash, hashdesc->hashsize);
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	715
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	716 buf_burn(ses.kexhashbuf);
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	717 buf_free(ses.kexhashbuf);
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	718 ses.kexhashbuf = NULL;
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	719
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	720 /* first time around, we set the session_id to H */
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	721 if (ses.session_id == NULL) {
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	722 /* create the session_id, this never needs freeing */
761 ac2158e3e403 ecc kind of works, needs fixing/testing Matt Johnston <matt@ucc.asn.au> parents: 759 diff changeset	723 ses.session_id = buf_newcopy(ses.hash);
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	724 }
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	725
bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	726 }
755 b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc Matt Johnston <matt@ucc.asn.au> parents: 712 diff changeset	727
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	728 /* read the other side's algo list. buf_match_algo is a callback to match
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	729 * algos for the client or server. */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	730 static void read_kex_algos() {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	731
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	732 /* for asymmetry */
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	733 algo_type * c2s_hash_algo = NULL;
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	734 algo_type * s2c_hash_algo = NULL;
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	735 algo_type * c2s_cipher_algo = NULL;
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	736 algo_type * s2c_cipher_algo = NULL;
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	737 algo_type * c2s_comp_algo = NULL;
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	738 algo_type * s2c_comp_algo = NULL;
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	739 /* the generic one */
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	740 algo_type * algo = NULL;
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	741
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	742 /* which algo couldn't match */
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	743 char * erralgo = NULL;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	744
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	745 int goodguess = 0;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	746 int allgood = 1; /* we AND this with each goodguess and see if its still
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	747 true after */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	748
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	749 buf_incrpos(ses.payload, 16); /* start after the cookie */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	750
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	751 ses.newkeys = (struct key_context*)m_malloc(sizeof(struct key_context));
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	752
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	753 /* kex_algorithms */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	754 algo = ses.buf_match_algo(ses.payload, sshkex, &goodguess);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	755 allgood &= goodguess;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	756 if (algo == NULL) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	757 erralgo = "kex";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	758 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	759 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	760 TRACE(("kex algo %s", algo->name))
756 bf9dc2d9c2b1 more bits on ecc branch Matt Johnston <matt@ucc.asn.au> parents: 755 diff changeset	761 ses.newkeys->algo_kex = algo->data;
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	762
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	763 /* server_host_key_algorithms */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	764 algo = ses.buf_match_algo(ses.payload, sshhostkey, &goodguess);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	765 allgood &= goodguess;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	766 if (algo == NULL) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	767 erralgo = "hostkey";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	768 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	769 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 116 diff changeset	770 TRACE(("hostkey algo %s", algo->name))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	771 ses.newkeys->algo_hostkey = algo->val;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	772
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	773 /* encryption_algorithms_client_to_server */
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	774 c2s_cipher_algo = ses.buf_match_algo(ses.payload, sshciphers, &goodguess);
116 2010f4119c1a Check for non-matching algos properly Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	775 if (c2s_cipher_algo == NULL) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	776 erralgo = "enc c->s";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	777 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	778 }
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	779 TRACE(("enc c2s is %s", c2s_cipher_algo->name))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	780
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	781 /* encryption_algorithms_server_to_client */
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	782 s2c_cipher_algo = ses.buf_match_algo(ses.payload, sshciphers, &goodguess);
116 2010f4119c1a Check for non-matching algos properly Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	783 if (s2c_cipher_algo == NULL) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	784 erralgo = "enc s->c";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	785 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	786 }
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	787 TRACE(("enc s2c is %s", s2c_cipher_algo->name))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	788
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	789 /* mac_algorithms_client_to_server */
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	790 c2s_hash_algo = ses.buf_match_algo(ses.payload, sshhashes, &goodguess);
116 2010f4119c1a Check for non-matching algos properly Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	791 if (c2s_hash_algo == NULL) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	792 erralgo = "mac c->s";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	793 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	794 }
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	795 TRACE(("hash c2s is %s", c2s_hash_algo->name))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	796
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	797 /* mac_algorithms_server_to_client */
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	798 s2c_hash_algo = ses.buf_match_algo(ses.payload, sshhashes, &goodguess);
116 2010f4119c1a Check for non-matching algos properly Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	799 if (s2c_hash_algo == NULL) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	800 erralgo = "mac s->c";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	801 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	802 }
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	803 TRACE(("hash s2c is %s", s2c_hash_algo->name))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	804
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	805 /* compression_algorithms_client_to_server */
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	806 c2s_comp_algo = ses.buf_match_algo(ses.payload, ses.compress_algos, &goodguess);
116 2010f4119c1a Check for non-matching algos properly Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	807 if (c2s_comp_algo == NULL) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	808 erralgo = "comp c->s";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	809 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	810 }
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	811 TRACE(("hash c2s is %s", c2s_comp_algo->name))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	812
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	813 /* compression_algorithms_server_to_client */
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 555 diff changeset	814 s2c_comp_algo = ses.buf_match_algo(ses.payload, ses.compress_algos, &goodguess);
116 2010f4119c1a Check for non-matching algos properly Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	815 if (s2c_comp_algo == NULL) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	816 erralgo = "comp s->c";
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	817 goto error;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	818 }
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	819 TRACE(("hash s2c is %s", s2c_comp_algo->name))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	820
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	821 /* languages_client_to_server */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	822 buf_eatstring(ses.payload);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	823
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	824 /* languages_server_to_client */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	825 buf_eatstring(ses.payload);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	826
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	827 /* first_kex_packet_follows */
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	828 if (buf_getbool(ses.payload)) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	829 ses.kexstate.firstfollows = 1;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	830 /* if the guess wasn't good, we ignore the packet sent */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	831 if (!allgood) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	832 ses.ignorenext = 1;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	833 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	834 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	835
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	836 /* Handle the asymmetry */
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	837 if (IS_DROPBEAR_CLIENT) {
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	838 ses.newkeys->recv.algo_crypt =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	839 (struct dropbear_cipher*)s2c_cipher_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	840 ses.newkeys->trans.algo_crypt =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	841 (struct dropbear_cipher*)c2s_cipher_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	842 ses.newkeys->recv.crypt_mode =
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	843 (struct dropbear_cipher_mode*)s2c_cipher_algo->mode;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	844 ses.newkeys->trans.crypt_mode =
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	845 (struct dropbear_cipher_mode*)c2s_cipher_algo->mode;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	846 ses.newkeys->recv.algo_mac =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	847 (struct dropbear_hash*)s2c_hash_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	848 ses.newkeys->trans.algo_mac =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	849 (struct dropbear_hash*)c2s_hash_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	850 ses.newkeys->recv.algo_comp = s2c_comp_algo->val;
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	851 ses.newkeys->trans.algo_comp = c2s_comp_algo->val;
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	852 } else {
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	853 /* SERVER */
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	854 ses.newkeys->recv.algo_crypt =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	855 (struct dropbear_cipher*)c2s_cipher_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	856 ses.newkeys->trans.algo_crypt =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	857 (struct dropbear_cipher*)s2c_cipher_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	858 ses.newkeys->recv.crypt_mode =
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	859 (struct dropbear_cipher_mode*)c2s_cipher_algo->mode;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	860 ses.newkeys->trans.crypt_mode =
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	861 (struct dropbear_cipher_mode*)s2c_cipher_algo->mode;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	862 ses.newkeys->recv.algo_mac =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	863 (struct dropbear_hash*)c2s_hash_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	864 ses.newkeys->trans.algo_mac =
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	865 (struct dropbear_hash*)s2c_hash_algo->data;
534 0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	866 ses.newkeys->recv.algo_comp = c2s_comp_algo->val;
0431915df79f - Get rid of decryptreadbuf, just decrypt in-place with readbuf Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	867 ses.newkeys->trans.algo_comp = s2c_comp_algo->val;
36 a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	868 }
a600c015562d Handle differing c2s and s2c algorithms properly Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	869
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	870 /* reserved for future extensions */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	871 buf_getint(ses.payload);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	872 return;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	873
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	874 error:
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 575 diff changeset	875 dropbear_exit("No matching algo %s", erralgo);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 22 diff changeset	876 }

Mercurial > dropbear

annotate common-kex.c @ 761:ac2158e3e403 ecc