dropbear: common-algo.c annotate

annotate common-algo.c @ 746:465fefc4f6e0 kexguess

Put some #ifdef options around first-follows options in case they need to be disabled

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 03 Apr 2013 00:43:31 +0800
parents	15999b098cc9
children	077bbe1eb220

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: 4 diff changeset	2 * Dropbear SSH
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
74 e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	5 * Copyright (c) 2004 by Mihnea Stoenescu
4 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 "algo.h"
741 eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	27 #include "session.h"
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 /* This file (algo.c) organises the ciphers which can be used, and is used to
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 * decide which ciphers/hashes/compression/signing to use during key exchange*/
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	33 static int void_cipher(const unsigned char* in, unsigned char* out,
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	34 unsigned long len, void *cipher_state) {
543 e12c9225acbd - Don't memcpy() in place with void_encrypt Matt Johnston <matt@ucc.asn.au> parents: 503 diff changeset	35 if (in != out) {
e12c9225acbd - Don't memcpy() in place with void_encrypt Matt Johnston <matt@ucc.asn.au> parents: 503 diff changeset	36 memmove(out, in, len);
e12c9225acbd - Don't memcpy() in place with void_encrypt Matt Johnston <matt@ucc.asn.au> parents: 503 diff changeset	37 }
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	38 return CRYPT_OK;
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	39 }
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	40
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	41 static int void_start(int cipher, const unsigned char *IV,
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	42 const unsigned char *key,
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	43 int keylen, int num_rounds, void *cipher_state) {
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	44 return CRYPT_OK;
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	45 }
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	46
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 /* Mappings for ciphers, parameters are
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 {&cipher_desc, keysize, blocksize} */
715 cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	49
cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	50 /* Remember to add new ciphers/hashes to regciphers/reghashes too */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	52 #ifdef DROPBEAR_AES256
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	53 static const struct dropbear_cipher dropbear_aes256 =
5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	54 {&aes_desc, 32, 16};
5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	55 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	56 #ifdef DROPBEAR_AES128
227 ad1b24e39bf3 Make a variables static Matt Johnston <matt@ucc.asn.au> parents: 194 diff changeset	57 static const struct dropbear_cipher dropbear_aes128 =
150 82fcf3185616 Cleaning out various dead wood found with -dead_strip Matt Johnston <matt@ucc.asn.au> parents: 74 diff changeset	58 {&aes_desc, 16, 16};
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	60 #ifdef DROPBEAR_BLOWFISH
227 ad1b24e39bf3 Make a variables static Matt Johnston <matt@ucc.asn.au> parents: 194 diff changeset	61 static const struct dropbear_cipher dropbear_blowfish =
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62 {&blowfish_desc, 16, 8};
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	64 #ifdef DROPBEAR_TWOFISH256
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	65 static const struct dropbear_cipher dropbear_twofish256 =
5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	66 {&twofish_desc, 32, 16};
5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	67 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	68 #ifdef DROPBEAR_TWOFISH128
227 ad1b24e39bf3 Make a variables static Matt Johnston <matt@ucc.asn.au> parents: 194 diff changeset	69 static const struct dropbear_cipher dropbear_twofish128 =
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70 {&twofish_desc, 16, 16};
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	72 #ifdef DROPBEAR_3DES
227 ad1b24e39bf3 Make a variables static Matt Johnston <matt@ucc.asn.au> parents: 194 diff changeset	73 static const struct dropbear_cipher dropbear_3des =
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 {&des3_desc, 24, 8};
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77 /* used to indicate no encryption, as defined in rfc2410 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	78 const struct dropbear_cipher dropbear_nocipher =
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79 {NULL, 16, 8};
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	81 /* A few void* s are required to silence warnings
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	82 * about the symmetric_CBC vs symmetric_CTR cipher_state pointer */
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	83 const struct dropbear_cipher_mode dropbear_mode_cbc =
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	84 {(void)cbc_start, (void)cbc_encrypt, (void*)cbc_decrypt};
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	85 const struct dropbear_cipher_mode dropbear_mode_none =
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	86 {void_start, void_cipher, void_cipher};
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	87 #ifdef DROPBEAR_ENABLE_CTR_MODE
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	88 /* a wrapper to make ctr_start and cbc_start look the same */
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	89 static int dropbear_big_endian_ctr_start(int cipher,
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	90 const unsigned char *IV,
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	91 const unsigned char *key, int keylen,
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	92 int num_rounds, symmetric_CTR *ctr) {
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	93 return ctr_start(cipher, IV, key, keylen, num_rounds, CTR_COUNTER_BIG_ENDIAN, ctr);
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	94 }
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	95 const struct dropbear_cipher_mode dropbear_mode_ctr =
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	96 {(void)dropbear_big_endian_ctr_start, (void)ctr_encrypt, (void*)ctr_decrypt};
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	97 #endif
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	98
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99 /* Mapping of ssh hashes to libtomcrypt hashes, including keysize etc.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 {&hash_desc, keysize, hashsize} */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 #ifdef DROPBEAR_SHA1_HMAC
227 ad1b24e39bf3 Make a variables static Matt Johnston <matt@ucc.asn.au> parents: 194 diff changeset	103 static const struct dropbear_hash dropbear_sha1 =
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104 {&sha1_desc, 20, 20};
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105 #endif
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	106 #ifdef DROPBEAR_SHA1_96_HMAC
5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	107 static const struct dropbear_hash dropbear_sha1_96 =
5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	108 {&sha1_desc, 20, 12};
5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	109 #endif
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	110 #ifdef DROPBEAR_SHA2_256_HMAC
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	111 static const struct dropbear_hash dropbear_sha2_256 =
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	112 {&sha256_desc, 32, 32};
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	113 #endif
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	114 #ifdef DROPBEAR_SHA2_512_HMAC
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	115 static const struct dropbear_hash dropbear_sha2_512 =
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	116 {&sha512_desc, 64, 64};
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	117 #endif
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	118 #ifdef DROPBEAR_MD5_HMAC
227 ad1b24e39bf3 Make a variables static Matt Johnston <matt@ucc.asn.au> parents: 194 diff changeset	119 static const struct dropbear_hash dropbear_md5 =
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 {&md5_desc, 16, 16};
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	122
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 const struct dropbear_hash dropbear_nohash =
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124 {NULL, 16, 0}; /* used initially */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	127 /* The following map ssh names to internal values.
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	128 * The ordering here is important for the client - the first mode
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	129 * that is also supported by the server will get used. */
4 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 algo_type sshciphers[] = {
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	132 #ifdef DROPBEAR_ENABLE_CTR_MODE
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	133 #ifdef DROPBEAR_AES128
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	134 {"aes128-ctr", 0, &dropbear_aes128, 1, &dropbear_mode_ctr},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	135 #endif
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	136 #ifdef DROPBEAR_3DES
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	137 {"3des-ctr", 0, &dropbear_3des, 1, &dropbear_mode_ctr},
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	139 #ifdef DROPBEAR_AES256
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	140 {"aes256-ctr", 0, &dropbear_aes256, 1, &dropbear_mode_ctr},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	141 #endif
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	142 #endif /* DROPBEAR_ENABLE_CTR_MODE */
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	143
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	144 /* CBC modes are always enabled */
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	145 #ifdef DROPBEAR_AES128
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	146 {"aes128-cbc", 0, &dropbear_aes128, 1, &dropbear_mode_cbc},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	147 #endif
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	148 #ifdef DROPBEAR_3DES
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	149 {"3des-cbc", 0, &dropbear_3des, 1, &dropbear_mode_cbc},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	150 #endif
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	151 #ifdef DROPBEAR_AES256
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	152 {"aes256-cbc", 0, &dropbear_aes256, 1, &dropbear_mode_cbc},
235 c3dbd3e1a8ce Change the preferred algorithm order Matt Johnston <matt@ucc.asn.au> parents: 234 diff changeset	153 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	154 #ifdef DROPBEAR_TWOFISH256
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	155 {"twofish256-cbc", 0, &dropbear_twofish256, 1, &dropbear_mode_cbc},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	156 {"twofish-cbc", 0, &dropbear_twofish256, 1, &dropbear_mode_cbc},
235 c3dbd3e1a8ce Change the preferred algorithm order Matt Johnston <matt@ucc.asn.au> parents: 234 diff changeset	157 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	158 #ifdef DROPBEAR_TWOFISH128
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	159 {"twofish128-cbc", 0, &dropbear_twofish128, 1, &dropbear_mode_cbc},
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	161 #ifdef DROPBEAR_BLOWFISH
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	162 {"blowfish-cbc", 0, &dropbear_blowfish, 1, &dropbear_mode_cbc},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	163 #endif
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 238 diff changeset	164 #ifdef DROPBEAR_NONE_CIPHER
512 0129fd8ccc71 Update nocrypto branch to current head Matt Johnston <matt@ucc.asn.au> parents: 511 diff changeset	165 {"none", 0, (void*)&dropbear_nocipher, 1, &dropbear_mode_none},
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 238 diff changeset	166 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	167 {NULL, 0, NULL, 0, NULL}
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	170 algo_type sshhashes[] = {
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	171 #ifdef DROPBEAR_SHA2_256_HMAC
715 cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	172 {"hmac-sha2-256", 0, &dropbear_sha2_256, 1, NULL},
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	173 #endif
03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	174 #ifdef DROPBEAR_SHA2_512_HMAC
715 cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	175 {"hmac-sha2-512", 0, &dropbear_sha2_512, 1, NULL},
679 03073a27abb3 - Add hmac-sha2-256 and hmac-sha2-512. Needs debugging, seems to be Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	176 #endif
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	177 #ifdef DROPBEAR_SHA1_96_HMAC
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	178 {"hmac-sha1-96", 0, &dropbear_sha1_96, 1, NULL},
228 5e4110bb753a - Fixed twofish algorithm naming so it actually works. Matt Johnston <matt@ucc.asn.au> parents: 227 diff changeset	179 #endif
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180 #ifdef DROPBEAR_SHA1_HMAC
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	181 {"hmac-sha1", 0, &dropbear_sha1, 1, NULL},
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 #ifdef DROPBEAR_MD5_HMAC
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	184 {"hmac-md5", 0, (void*)&dropbear_md5, 1, NULL},
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185 #endif
252 29afa62b5450 - a hack for grahame to run dropbear with "none" cipher. Matt Johnston <matt@ucc.asn.au> parents: 238 diff changeset	186 #ifdef DROPBEAR_NONE_INTEGRITY
681 a4b7627b3157 Update insecure-nocrypto to current head Matt Johnston <matt@ucc.asn.au> parents: 679 512 diff changeset	187 {"none", 0, (void*)&dropbear_nohash, 1, NULL},
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	189 {NULL, 0, NULL, 0, NULL}
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190 };
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192 #ifndef DISABLE_ZLIB
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 543 diff changeset	193 algo_type ssh_compress[] = {
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	194 {"zlib", DROPBEAR_COMP_ZLIB, NULL, 1, NULL},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	195 {"[email protected]", DROPBEAR_COMP_ZLIB_DELAY, NULL, 1, NULL},
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 543 diff changeset	196 {"none", DROPBEAR_COMP_NONE, NULL, 1, NULL},
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 543 diff changeset	197 {NULL, 0, NULL, 0, NULL}
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 543 diff changeset	198 };
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199 #endif
575 f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 543 diff changeset	200
f9b5dc0cba61 - Disable compression for non-final multihops Matt Johnston <matt@ucc.asn.au> parents: 543 diff changeset	201 algo_type ssh_nocompress[] = {
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	202 {"none", DROPBEAR_COMP_NONE, NULL, 1, NULL},
43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	203 {NULL, 0, NULL, 0, NULL}
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206 algo_type sshhostkey[] = {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207 #ifdef DROPBEAR_RSA
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	208 {"ssh-rsa", DROPBEAR_SIGNKEY_RSA, NULL, 1, NULL},
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210 #ifdef DROPBEAR_DSS
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	211 {"ssh-dss", DROPBEAR_SIGNKEY_DSS, NULL, 1, NULL},
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	213 {NULL, 0, NULL, 0, NULL}
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 };
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 algo_type sshkex[] = {
745 15999b098cc9 Don't usually need to recalculate dh_e for the repeated kexdh_init packet Matt Johnston <matt@ucc.asn.au> parents: 741 diff changeset	217 {"diffie-hellman-group14-sha1", DROPBEAR_KEX_DH_GROUP14, NULL, 1, NULL},
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	218 {"diffie-hellman-group1-sha1", DROPBEAR_KEX_DH_GROUP1, NULL, 1, NULL},
746 465fefc4f6e0 Put some #ifdef options around first-follows options in case they Matt Johnston <matt@ucc.asn.au> parents: 745 diff changeset	219 #ifdef USE_KEXGUESS2
740 3062da90dab8 Add kexguess2 behaviour Matt Johnston <matt@ucc.asn.au> parents: 715 diff changeset	220 {KEXGUESS2_ALGO_NAME, KEXGUESS2_ALGO_ID, NULL, 1, NULL},
746 465fefc4f6e0 Put some #ifdef options around first-follows options in case they Matt Johnston <matt@ucc.asn.au> parents: 745 diff changeset	221 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	222 {NULL, 0, NULL, 0, NULL}
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 };
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 /* Register the compiled in ciphers.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227 * This should be run before using any of the ciphers/hashes */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 void crypto_init() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229
194 e972be139cb5 Switching to libtomcrypt 1.02 Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	230 const struct ltc_cipher_descriptor *regciphers[] = {
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	231 #ifdef DROPBEAR_AES
150 82fcf3185616 Cleaning out various dead wood found with -dead_strip Matt Johnston <matt@ucc.asn.au> parents: 74 diff changeset	232 &aes_desc,
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	234 #ifdef DROPBEAR_BLOWFISH
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235 &blowfish_desc,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	237 #ifdef DROPBEAR_TWOFISH
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 &twofish_desc,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239 #endif
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	240 #ifdef DROPBEAR_3DES
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 &des3_desc,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 NULL
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 };
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245
194 e972be139cb5 Switching to libtomcrypt 1.02 Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	246 const struct ltc_hash_descriptor *reghashes[] = {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247 /* we need sha1 for hostkey stuff regardless */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 &sha1_desc,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 #ifdef DROPBEAR_MD5_HMAC
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 &md5_desc,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 #endif
715 cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	252 #ifdef DROPBEAR_SHA2_256_HMAC
cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	253 &sha256_desc,
cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	254 #endif
cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	255 #ifdef DROPBEAR_SHA2_512_HMAC
cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	256 &sha512_desc,
cd3d3c63d189 Make hmac-sha2-256 and hmac-sha2-512 work Matt Johnston <matt@ucc.asn.au> parents: 686 diff changeset	257 #endif
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	258 NULL
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 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262 for (i = 0; regciphers[i] != NULL; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 if (register_cipher(regciphers[i]) == -1) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 575 diff changeset	264 dropbear_exit("Error registering crypto");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268 for (i = 0; reghashes[i] != NULL; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 if (register_hash(reghashes[i]) == -1) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 575 diff changeset	270 dropbear_exit("Error registering crypto");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	271 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 }
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 /* algolen specifies the length of algo, algos is our local list to match
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276 * against.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277 * Returns DROPBEAR_SUCCESS if we have a match for algo, DROPBEAR_FAILURE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 * otherwise */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279 int have_algo(char* algo, size_t algolen, algo_type algos[]) {
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 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 for (i = 0; algos[i].name != NULL; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284 if (strlen(algos[i].name) == algolen
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285 && (strncmp(algos[i].name, algo, algolen) == 0)) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293 /* Output a comma separated list of algorithms to a buffer */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 void buf_put_algolist(buffer * buf, algo_type localalgos[]) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295
238 e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	296 unsigned int i, len;
e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	297 unsigned int donefirst = 0;
e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	298 buffer *algolist = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 501 diff changeset	300 algolist = buf_new(160);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301 for (i = 0; localalgos[i].name != NULL; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 if (localalgos[i].usable) {
238 e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	303 if (donefirst)
e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	304 buf_putbyte(algolist, ',');
e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	305 donefirst = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	306 len = strlen(localalgos[i].name);
238 e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	307 buf_putbytes(algolist, localalgos[i].name, len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	308 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 }
238 e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	310 buf_putstring(buf, algolist->data, algolist->len);
e923801a7678 use a buffer rather than raw char array for creating Matt Johnston <matt@ucc.asn.au> parents: 237 diff changeset	311 buf_free(algolist);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 }
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	313
741 eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	314 /* match the first algorithm in the comma-separated list in buf which is
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	315 * also in localalgos[], or return NULL on failure.
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	316 * (*goodguess) is set to 1 if the preferred client/server algos match,
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	317 * 0 otherwise. This is used for checking if the kexalgo/hostkeyalgos are
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	318 * guessed correctly */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	319 algo_type * buf_match_algo(buffer* buf, algo_type localalgos[],
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	320 enum kexguess2_used kexguess2, int goodguess)
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	321 {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	322
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	323 unsigned char * algolist = NULL;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	324 const unsigned char remotenames[MAX_PROPOSED_ALGO], localnames[MAX_PROPOSED_ALGO];
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	325 unsigned int len;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	326 unsigned int remotecount, localcount, clicount, servcount, i, j;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	327 algo_type * ret = NULL;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	328 const unsigned char clinames, servnames;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	329
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	330 if (goodguess) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	331 *goodguess = 0;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	332 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	333
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	334 /* get the comma-separated list from the buffer ie "algo1,algo2,algo3" */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	335 algolist = buf_getstring(buf, &len);
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	336 TRACE(("buf_match_algo: %s", algolist))
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	337 if (len > MAX_PROPOSED_ALGO*(MAX_NAME_LEN+1)) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	338 goto out;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	339 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	340
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	341 /* remotenames will contain a list of the strings parsed out */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	342 /* We will have at least one string (even if it's just "") */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	343 remotenames[0] = algolist;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	344 remotecount = 1;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	345 for (i = 0; i < len; i++) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	346 if (algolist[i] == '\0') {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	347 /* someone is trying something strange */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	348 goto out;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	349 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	350 if (algolist[i] == ',') {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	351 algolist[i] = '\0';
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	352 remotenames[remotecount] = &algolist[i+1];
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	353 remotecount++;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	354 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	355 if (remotecount >= MAX_PROPOSED_ALGO) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	356 break;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	357 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	358 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	359 if (kexguess2 && *kexguess2 == KEXGUESS2_LOOK) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	360 for (i = 0; i < remotecount; i++)
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	361 {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	362 if (strcmp(remotenames[i], KEXGUESS2_ALGO_NAME) == 0) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	363 *kexguess2 = KEXGUESS2_YES;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	364 break;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	365 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	366 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	367 if (*kexguess2 == KEXGUESS2_LOOK) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	368 *kexguess2 = KEXGUESS2_NO;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	369 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	370 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	371
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	372 for (i = 0; localalgos[i].name != NULL; i++) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	373 if (localalgos[i].usable) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	374 localnames[i] = localalgos[i].name;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	375 } else {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	376 localnames[i] = NULL;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	377 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	378 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	379 localcount = i;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	380
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	381 if (IS_DROPBEAR_SERVER) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	382 clinames = remotenames;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	383 clicount = remotecount;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	384 servnames = localnames;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	385 servcount = localcount;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	386 } else {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	387 clinames = localnames;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	388 clicount = localcount;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	389 servnames = remotenames;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	390 servcount = remotecount;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	391 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	392
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	393 /* iterate and find the first match */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	394 for (i = 0; i < clicount; i++) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	395 for (j = 0; j < servcount; j++) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	396 if (!(servnames[j] && clinames[i])) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	397 // unusable algos are NULL
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	398 continue;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	399 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	400 if (strcmp(servnames[j], clinames[i]) == 0) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	401 /* set if it was a good guess */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	402 if (goodguess && kexguess2) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	403 if (*kexguess2 == KEXGUESS2_YES) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	404 if (i == 0) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	405 *goodguess = 1;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	406 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	407
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	408 } else {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	409 if (i == 0 && j == 0) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	410 *goodguess = 1;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	411 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	412 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	413 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	414 /* set the algo to return */
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	415 if (IS_DROPBEAR_SERVER) {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	416 ret = &localalgos[j];
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	417 } else {
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	418 ret = &localalgos[i];
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	419 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	420 goto out;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	421 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	422 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	423 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	424
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	425 out:
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	426 m_free(algolist);
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	427 return ret;
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	428 }
eafdf8b363f5 Get rid of client/server specific buf_match_algo, use single Matt Johnston <matt@ucc.asn.au> parents: 740 diff changeset	429
686 983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	430 #ifdef DROPBEAR_NONE_CIPHER
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	431
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	432 void
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	433 set_algo_usable(algo_type algos[], const char * algo_name, int usable)
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	434 {
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	435 algo_type *a;
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	436 for (a = algos; a->name != NULL; a++)
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	437 {
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	438 if (strcmp(a->name, algo_name) == 0)
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	439 {
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	440 a->usable = usable;
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	441 return;
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	442 }
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	443 }
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	444 }
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	445
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	446 int
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	447 get_algo_usable(algo_type algos[], const char * algo_name)
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	448 {
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	449 algo_type *a;
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	450 for (a = algos; a->name != NULL; a++)
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	451 {
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	452 if (strcmp(a->name, algo_name) == 0)
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	453 {
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	454 return a->usable;
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	455 }
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	456 }
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	457 return 0;
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	458 }
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	459
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	460 #endif // DROPBEAR_NONE_CIPHER
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	461
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	462 #ifdef ENABLE_USER_ALGO_LIST
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	463
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	464 char *
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	465 algolist_string(algo_type algos[])
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	466 {
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	467 char *ret_list;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	468 buffer *b = buf_new(200);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	469 buf_put_algolist(b, algos);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	470 buf_setpos(b, b->len);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	471 buf_putbyte(b, '\0');
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	472 buf_setpos(b, 4);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	473 ret_list = m_strdup(buf_getptr(b, b->len - b->pos));
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	474 buf_free(b);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	475 return ret_list;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	476 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	477
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	478 static algo_type*
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	479 check_algo(const char* algo_name, algo_type *algos)
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	480 {
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	481 algo_type *a;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	482 for (a = algos; a->name != NULL; a++)
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	483 {
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	484 if (strcmp(a->name, algo_name) == 0)
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	485 {
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	486 return a;
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	487 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	488 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	489
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	490 return NULL;
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	491 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	492
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	493 static void
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	494 try_add_algo(const char algo_name, algo_type algos,
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	495 const char algo_desc, algo_type new_algos, int *num_ret)
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	496 {
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	497 algo_type *match_algo = check_algo(algo_name, algos);
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	498 if (!match_algo)
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	499 {
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	500 dropbear_log(LOG_WARNING, "This Dropbear program does not support '%s' %s algorithm", algo_name, algo_desc);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	501 return;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	502 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	503
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	504 new_algos[num_ret] = match_algo;
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	505 (*num_ret)++;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	506 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	507
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	508 /* Checks a user provided comma-separated algorithm list for available
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	509 * options. Any that are not acceptable are removed in-place. Returns the
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	510 * number of valid algorithms. */
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	511 int
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	512 check_user_algos(const char* user_algo_list, algo_type * algos,
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	513 const char *algo_desc)
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	514 {
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	515 algo_type new_algos[MAX_PROPOSED_ALGO];
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	516 /* this has two passes. first we sweep through the given list of
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	517 * algorithms and mark them as usable=2 in the algo_type[] array... */
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	518 int num_ret = 0;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	519 char *work_list = m_strdup(user_algo_list);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	520 char *last_name = work_list;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	521 char *c;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	522 for (c = work_list; *c; c++)
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	523 {
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	524 if (*c == ',')
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	525 {
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	526 *c = '\0';
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	527 try_add_algo(last_name, algos, algo_desc, new_algos, &num_ret);
686 983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	528 c++;
983a817f8e41 - Only request "none" cipher after auth has succeeded Matt Johnston <matt@ucc.asn.au> parents: 684 diff changeset	529 last_name = c;
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	530 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	531 }
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	532 try_add_algo(last_name, algos, algo_desc, new_algos, &num_ret);
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	533 m_free(work_list);
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	534
683 63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	535 new_algos[num_ret].name = NULL;
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	536
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	537 /* Copy one more as a blank delimiter */
63f8d6c469cf ENABLE_USER_ALGO_LIST should work for the client Matt Johnston <matt@ucc.asn.au> parents: 682 diff changeset	538 memcpy(algos, new_algos, sizeof(new_algos) (num_ret+1));
682 4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	539 return num_ret;
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	540 }
4edea9f363d0 Add rough support for choosing ciphers/hashes with "-c" or "-m" Matt Johnston <matt@ucc.asn.au> parents: 595 diff changeset	541 #endif // ENABLE_USER_ALGO_LIST

Mercurial > dropbear

annotate common-algo.c @ 746:465fefc4f6e0 kexguess