dropbear: rsa.c annotate

annotate rsa.c @ 1765:b688c884dad7

Fix fuzz-sshpacketmutator to work

author	Matt Johnston <matt@ucc.asn.au>
date	Mon, 26 Oct 2020 22:52:07 +0800
parents	1051e4eea25a
children

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 * Dropbear - a SSH2 server
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * Permission is hereby granted, free of charge, to any person obtaining a copy
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * in the Software without restriction, including without limitation the rights
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 * furnished to do so, subject to the following conditions:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 * The above copyright notice and this permission notice shall be included in
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * SOFTWARE. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 /* Perform RSA operations on data, including reading keys, signing and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 * verification.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 * The format is specified in rfc2437, Applied Cryptography or The Handbook of
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 * Applied Cryptography detail the general algorithm. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 #include "includes.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 #include "bignum.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 #include "rsa.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 #include "buffer.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 #include "ssh.h"
858 220f55d540ae rename random.h to dbrandom.h since some OSes have a system random.h Matt Johnston <matt@ucc.asn.au> parents: 807 diff changeset	37 #include "dbrandom.h"
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	38 #include "signkey.h"
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1250 diff changeset	40 #if DROPBEAR_RSA
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	42 #if !(DROPBEAR_RSA_SHA1 \|\| DROPBEAR_RSA_SHA256)
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	43 #error Somehow RSA was enabled with neither DROPBEAR_RSA_SHA1 nor DROPBEAR_RSA_SHA256
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	44 #endif
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	45
1459 06d52bcb8094 Pointer parameter could be declared as pointing to const Francois Perrad <francois.perrad@gadz.org> parents: 1409 diff changeset	46 static void rsa_pad_em(const dropbear_rsa_key * key,
1675 ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256 Matt Johnston <matt@ucc.asn.au> parents: 1674 diff changeset	47 const buffer data_buf, mp_int rsa_em, enum signature_type sigtype);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 /* Load a public rsa key from a buffer, initialising the values.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 * The key will have the same format as buf_put_rsa_key.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 * These should be freed with rsa_key_free.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
586 b50f0107e505 Rename rsa_key to dropbear_rsa_key (and same for dss too) so Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	53 int buf_get_rsa_pub_key(buffer* buf, dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	55 int ret = DROPBEAR_FAILURE;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	56 TRACE(("enter buf_get_rsa_pub_key"))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	57 dropbear_assert(key != NULL);
805 724c3e0c8734 Add m_mp_alloc_init_multi() helper Matt Johnston <matt@ucc.asn.au> parents: 801 diff changeset	58 m_mp_alloc_init_multi(&key->e, &key->n, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 key->d = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60 key->p = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61 key->q = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63 buf_incrpos(buf, 4+SSH_SIGNKEY_RSA_LEN); /* int + "ssh-rsa" */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65 if (buf_getmpint(buf, key->e) == DROPBEAR_FAILURE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 \|\| buf_getmpint(buf, key->n) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	67 TRACE(("leave buf_get_rsa_pub_key: failure"))
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	68 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71 if (mp_count_bits(key->n) < MIN_RSA_KEYLEN) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	72 dropbear_log(LOG_WARNING, "RSA key too short");
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	73 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75
1526 36ab6b091ad3 limit rsa->e size to 64 bits Matt Johnston <matt@ucc.asn.au> parents: 1459 diff changeset	76 /* 64 bit is limit used by openssl, so we won't block any keys in the wild */
36ab6b091ad3 limit rsa->e size to 64 bits Matt Johnston <matt@ucc.asn.au> parents: 1459 diff changeset	77 if (mp_count_bits(key->e) > 64) {
36ab6b091ad3 limit rsa->e size to 64 bits Matt Johnston <matt@ucc.asn.au> parents: 1459 diff changeset	78 dropbear_log(LOG_WARNING, "RSA key bad e");
36ab6b091ad3 limit rsa->e size to 64 bits Matt Johnston <matt@ucc.asn.au> parents: 1459 diff changeset	79 goto out;
36ab6b091ad3 limit rsa->e size to 64 bits Matt Johnston <matt@ucc.asn.au> parents: 1459 diff changeset	80 }
36ab6b091ad3 limit rsa->e size to 64 bits Matt Johnston <matt@ucc.asn.au> parents: 1459 diff changeset	81
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	82 TRACE(("leave buf_get_rsa_pub_key: success"))
1249 c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1123 diff changeset	83 ret = DROPBEAR_SUCCESS;
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	84 out:
1249 c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1123 diff changeset	85 if (ret == DROPBEAR_FAILURE) {
1409 c721e8c42d2a add m_mp_free_multi, be more careful freeing when failing to load keys Matt Johnston <matt@ucc.asn.au> parents: 1402 diff changeset	86 m_mp_free_multi(&key->e, &key->n, NULL);
1249 c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1123 diff changeset	87 }
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	88 return ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	91 /* Same as buf_get_rsa_pub_key, but reads private bits at the end.
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 * Loads a private rsa key from a buffer
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
586 b50f0107e505 Rename rsa_key to dropbear_rsa_key (and same for dss too) so Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	94 int buf_get_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) {
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	95 int ret = DROPBEAR_FAILURE;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	97 TRACE(("enter buf_get_rsa_priv_key"))
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	98 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 if (buf_get_rsa_pub_key(buf, key) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	101 TRACE(("leave buf_get_rsa_priv_key: pub: ret == DROPBEAR_FAILURE"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 }
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	104
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	105 key->d = NULL;
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	106 key->p = NULL;
9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	107 key->q = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108
807 75509065db53 have separate ecdsa keys for each size Matt Johnston <matt@ucc.asn.au> parents: 805 diff changeset	109 m_mp_alloc_init_multi(&key->d, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110 if (buf_getmpint(buf, key->d) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	111 TRACE(("leave buf_get_rsa_priv_key: d: ret == DROPBEAR_FAILURE"))
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	112 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	115 if (buf->pos == buf->len) {
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	116 /* old Dropbear private keys didn't keep p and q, so we will ignore them*/
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117 } else {
805 724c3e0c8734 Add m_mp_alloc_init_multi() helper Matt Johnston <matt@ucc.asn.au> parents: 801 diff changeset	118 m_mp_alloc_init_multi(&key->p, &key->q, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	119
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 if (buf_getmpint(buf, key->p) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	121 TRACE(("leave buf_get_rsa_priv_key: p: ret == DROPBEAR_FAILURE"))
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	122 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 }
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 if (buf_getmpint(buf, key->q) == DROPBEAR_FAILURE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	126 TRACE(("leave buf_get_rsa_priv_key: q: ret == DROPBEAR_FAILURE"))
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	127 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	131 ret = DROPBEAR_SUCCESS;
370 9a789fc03f40 Make sure that we clean up key parts if we fail during reading a rsa key Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	132 out:
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	133 if (ret == DROPBEAR_FAILURE) {
1409 c721e8c42d2a add m_mp_free_multi, be more careful freeing when failing to load keys Matt Johnston <matt@ucc.asn.au> parents: 1402 diff changeset	134 m_mp_free_multi(&key->d, &key->p, &key->q, NULL);
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	135 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	136 TRACE(("leave buf_get_rsa_priv_key"))
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1249 diff changeset	137 return ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 /* Clear and free the memory used by a public or private key */
586 b50f0107e505 Rename rsa_key to dropbear_rsa_key (and same for dss too) so Matt Johnston <matt@ucc.asn.au> parents: 378 diff changeset	142 void rsa_key_free(dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	144 TRACE2(("enter rsa_key_free"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 if (key == NULL) {
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	147 TRACE2(("leave rsa_key_free: key == NULL"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 }
1409 c721e8c42d2a add m_mp_free_multi, be more careful freeing when failing to load keys Matt Johnston <matt@ucc.asn.au> parents: 1402 diff changeset	150 m_mp_free_multi(&key->d, &key->e, &key->p, &key->q, &key->n, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151 m_free(key);
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	152 TRACE2(("leave rsa_key_free"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 /* Put the public rsa key into the buffer in the required format:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157 * string "ssh-rsa"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 * mp_int e
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 * mp_int n
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 */
1459 06d52bcb8094 Pointer parameter could be declared as pointing to const Francois Perrad <francois.perrad@gadz.org> parents: 1409 diff changeset	161 void buf_put_rsa_pub_key(buffer* buf, const dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	163 TRACE(("enter buf_put_rsa_pub_key"))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	164 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165
1123 d7b752525b91 buf_getstring and buf_putstring now use non-unsigned char* Matt Johnston <matt@ucc.asn.au> parents: 1094 diff changeset	166 buf_putstring(buf, SSH_SIGNKEY_RSA, SSH_SIGNKEY_RSA_LEN);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167 buf_putmpint(buf, key->e);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168 buf_putmpint(buf, key->n);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	169
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	170 TRACE(("leave buf_put_rsa_pub_key"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	171
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	172 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 /* Same as buf_put_rsa_pub_key, but with the private "x" key appended */
1459 06d52bcb8094 Pointer parameter could be declared as pointing to const Francois Perrad <francois.perrad@gadz.org> parents: 1409 diff changeset	175 void buf_put_rsa_priv_key(buffer* buf, const dropbear_rsa_key *key) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	177 TRACE(("enter buf_put_rsa_priv_key"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	179 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180 buf_put_rsa_pub_key(buf, key);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181 buf_putmpint(buf, key->d);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 /* new versions have p and q, old versions don't */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184 if (key->p) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185 buf_putmpint(buf, key->p);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	187 if (key->q) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 buf_putmpint(buf, key->q);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 }
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
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	192 TRACE(("leave buf_put_rsa_priv_key"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1250 diff changeset	196 #if DROPBEAR_SIGNKEY_VERIFY
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 /* Verify a signature in buf, made on data by the key given.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	199 int buf_rsa_verify(buffer * buf, const dropbear_rsa_key *key,
1675 ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256 Matt Johnston <matt@ucc.asn.au> parents: 1674 diff changeset	200 enum signature_type sigtype, const buffer *data_buf) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 unsigned int slen;
84 29a5c7c62350 default initialisers for mp_ints Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	202 DEF_MP_INT(rsa_s);
29a5c7c62350 default initialisers for mp_ints Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	203 DEF_MP_INT(rsa_mdash);
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	204 DEF_MP_INT(rsa_em);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205 int ret = DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	207 TRACE(("enter buf_rsa_verify"))
34 e2a1eaa19f22 Client mostly works up to password auth Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	208
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	209 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	211 m_mp_init_multi(&rsa_mdash, &rsa_s, &rsa_em, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 slen = buf_getint(buf);
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	214 if (slen != (unsigned int)mp_ubin_size(key->n)) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	215 TRACE(("bad size"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 goto out;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	218
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	219 if (mp_from_ubin(&rsa_s, buf_getptr(buf, buf->len - buf->pos),
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220 buf->len - buf->pos) != MP_OKAY) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	221 TRACE(("failed reading rsa_s"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 goto out;
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 /* check that s <= n-1 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 if (mp_cmp(&rsa_s, key->n) != MP_LT) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	227 TRACE(("s > n-1"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 goto out;
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231 /* create the magic PKCS padded value */
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	232 rsa_pad_em(key, data_buf, &rsa_em, sigtype);
4 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 if (mp_exptmod(&rsa_s, key->e, key->n, &rsa_mdash) != MP_OKAY) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	235 TRACE(("failed exptmod rsa_s"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236 goto out;
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
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	239 if (mp_cmp(&rsa_em, &rsa_mdash) == MP_EQ) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 /* signature is valid */
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	241 TRACE(("success!"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 ret = DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245 out:
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	246 mp_clear_multi(&rsa_mdash, &rsa_s, &rsa_em, NULL);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	247 TRACE(("leave buf_rsa_verify: ret %d", ret))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 return ret;
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	249 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 #endif /* DROPBEAR_SIGNKEY_VERIFY */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253 /* Sign the data presented with key, writing the signature contents
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254 * to the buffer */
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	255 void buf_put_rsa_sign(buffer* buf, const dropbear_rsa_key *key,
1675 ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256 Matt Johnston <matt@ucc.asn.au> parents: 1674 diff changeset	256 enum signature_type sigtype, const buffer *data_buf) {
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	257 const char *name = NULL;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	258 unsigned int nsize, ssize, namelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259 unsigned int i;
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	260 size_t written;
84 29a5c7c62350 default initialisers for mp_ints Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	261 DEF_MP_INT(rsa_s);
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	262 DEF_MP_INT(rsa_tmp1);
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	263 DEF_MP_INT(rsa_tmp2);
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	264 DEF_MP_INT(rsa_tmp3);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	266 TRACE(("enter buf_put_rsa_sign"))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	267 dropbear_assert(key != NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	269 m_mp_init_multi(&rsa_s, &rsa_tmp1, &rsa_tmp2, &rsa_tmp3, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	271 rsa_pad_em(key, data_buf, &rsa_tmp1, sigtype);
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	272
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 /* the actual signing of the padded data */
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	274
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1250 diff changeset	275 #if DROPBEAR_RSA_BLINDING
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	276
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	277 /* With blinding, s = (r^(-1))((em)r^e)^d mod n /
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	278
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	279 /* generate the r blinding value */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	280 /* rsa_tmp2 is r */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	281 gen_random_mpint(key->n, &rsa_tmp2);
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	282
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	283 /* rsa_tmp1 is em */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	284 /* em' = em * r^e mod n */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	285
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	286 /* rsa_s used as a temp var*/
454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	287 if (mp_exptmod(&rsa_tmp2, key->e, key->n, &rsa_s) != MP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	288 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	289 }
454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	290 if (mp_invmod(&rsa_tmp2, key->n, &rsa_tmp3) != MP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	291 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	292 }
454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	293 if (mp_mulmod(&rsa_tmp1, &rsa_s, key->n, &rsa_tmp2) != MP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	294 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	295 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	296
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	297 /* rsa_tmp2 is em' */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	298 /* s' = (em')^d mod n */
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	299 if (mp_exptmod(&rsa_tmp2, key->d, key->n, &rsa_tmp1) != MP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	300 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	301 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	302
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	303 /* rsa_tmp1 is s' */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	304 /* rsa_tmp3 is r^(-1) mod n */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	305 /* s = (s')r^(-1) mod n */
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	306 if (mp_mulmod(&rsa_tmp1, &rsa_tmp3, key->n, &rsa_s) != MP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	307 dropbear_exit("RSA error");
340 454a34b2dfd1 Fixes from Erik Hovland: Matt Johnston <matt@ucc.asn.au> parents: 276 diff changeset	308 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	309
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	310 #else
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	311
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 /* s = em^d mod n */
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	313 /* rsa_tmp1 is em */
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	314 if (mp_exptmod(&rsa_tmp1, key->d, key->n, &rsa_s) != MP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	315 dropbear_exit("RSA error");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	316 }
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	317
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1250 diff changeset	318 #endif /* DROPBEAR_RSA_BLINDING */
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	319
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	320 mp_clear_multi(&rsa_tmp1, &rsa_tmp2, &rsa_tmp3, NULL);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322 /* create the signature to return */
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	323 name = signature_name_from_type(sigtype, &namelen);
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	324 buf_putstring(buf, name, namelen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	325
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	326 nsize = mp_ubin_size(key->n);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328 /* string rsa_signature_blob length */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 buf_putint(buf, nsize);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 /* pad out s to same length as n */
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	331 ssize = mp_ubin_size(&rsa_s);
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	332 dropbear_assert(ssize <= nsize);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333 for (i = 0; i < nsize-ssize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334 buf_putbyte(buf, 0x00);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	335 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	336
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	337 if (mp_to_ubin(&rsa_s, buf_getwriteptr(buf, ssize), ssize, &written) != MP_OKAY) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 586 diff changeset	338 dropbear_exit("RSA error");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	339 }
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	340 buf_incrwritepos(buf, written);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 mp_clear(&rsa_s);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	342
1402 553c6bb80265 fix DEBUG_* condition Francois Perrad <francois.perrad@gadz.org> parents: 1295 diff changeset	343 #if defined(DEBUG_RSA) && DEBUG_TRACE
907 4a74c58e11fc Make some debug info conditional Matt Johnston <matt@ucc.asn.au> parents: 858 diff changeset	344 if (!debug_trace) {
4a74c58e11fc Make some debug info conditional Matt Johnston <matt@ucc.asn.au> parents: 858 diff changeset	345 printhex("RSA sig", buf->data, buf->len);
4a74c58e11fc Make some debug info conditional Matt Johnston <matt@ucc.asn.au> parents: 858 diff changeset	346 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	347 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	348
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	349
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 84 diff changeset	350 TRACE(("leave buf_put_rsa_sign"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	352
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	353 /* Creates the message value as expected by PKCS,
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	354 see rfc8017 section 9.2 */
1459 06d52bcb8094 Pointer parameter could be declared as pointing to const Francois Perrad <francois.perrad@gadz.org> parents: 1409 diff changeset	355 static void rsa_pad_em(const dropbear_rsa_key * key,
1675 ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256 Matt Johnston <matt@ucc.asn.au> parents: 1674 diff changeset	356 const buffer data_buf, mp_int rsa_em, enum signature_type sigtype) {
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	357 /* EM = 0x00 \|\| 0x01 \|\| PS \|\| 0x00 \|\| T
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	358 PS is padding of 0xff to make EM the size of key->n
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	359
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	360 T is the DER encoding of the hash alg (sha1 or sha256)
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	361 */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	363 /* From rfc8017 page 46 */
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	364 #if DROPBEAR_RSA_SHA1
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	365 const unsigned char T_sha1[] =
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	366 {0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b,
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14};
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	368 #endif
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	369 #if DROPBEAR_RSA_SHA256
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	370 const unsigned char T_sha256[] =
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	371 {0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01,
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	372 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20};
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	373 #endif
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	374
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	375 int Tlen = 0;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	376 const unsigned char *T = NULL;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	377 const struct ltc_hash_descriptor *hash_desc = NULL;
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	378 buffer * rsa_EM = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379 hash_state hs;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	380 unsigned int nsize;
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	381
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	382 switch (sigtype) {
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	383 #if DROPBEAR_RSA_SHA1
1675 ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256 Matt Johnston <matt@ucc.asn.au> parents: 1674 diff changeset	384 case DROPBEAR_SIGNATURE_RSA_SHA1:
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	385 Tlen = sizeof(T_sha1);
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	386 T = T_sha1;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	387 hash_desc = &sha1_desc;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	388 break;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	389 #endif
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	390 #if DROPBEAR_RSA_SHA256
1675 ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256 Matt Johnston <matt@ucc.asn.au> parents: 1674 diff changeset	391 case DROPBEAR_SIGNATURE_RSA_SHA256:
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	392 Tlen = sizeof(T_sha256);
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	393 T = T_sha256;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	394 hash_desc = &sha256_desc;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	395 break;
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	396 #endif
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	397 default:
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	398 assert(0);
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	399 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	400
1692 1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	401
1051e4eea25a Update LibTomMath to 1.2.0 (#84) Steffen Jaeckel <s@jaeckel.eu> parents: 1675 diff changeset	402 nsize = mp_ubin_size(key->n);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	404 rsa_EM = buf_new(nsize);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 /* type byte */
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	406 buf_putbyte(rsa_EM, 0x00);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 buf_putbyte(rsa_EM, 0x01);
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	408 /* Padding with PS 0xFF bytes */
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	409 while(rsa_EM->pos != rsa_EM->size - (1 + Tlen + hash_desc->hashsize)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410 buf_putbyte(rsa_EM, 0xff);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	411 }
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	412 buf_putbyte(rsa_EM, 0x00);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413 /* Magic ASN1 stuff */
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	414 buf_putbytes(rsa_EM, T, Tlen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	415
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 /* The hash of the data */
1674 ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	417 hash_desc->init(&hs);
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	418 hash_desc->process(&hs, data_buf->data, data_buf->len);
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	419 hash_desc->done(&hs, buf_getwriteptr(rsa_EM, hash_desc->hashsize));
ba6fc7afe1c5 use sigtype where appropriate Matt Johnston <matt@ucc.asn.au> parents: 1546 diff changeset	420 buf_incrwritepos(rsa_EM, hash_desc->hashsize);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	421
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 216 diff changeset	422 dropbear_assert(rsa_EM->pos == rsa_EM->size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	423
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	424 /* Create the mp_int from the encoded bytes */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	425 buf_setpos(rsa_EM, 0);
188 c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	426 bytes_to_mp(rsa_em, buf_getptr(rsa_EM, rsa_EM->size),
c9483550701b - refactored random mp_int generation and byte->mp_int code Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	427 rsa_EM->size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	428 buf_free(rsa_EM);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	429 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	431 #endif /* DROPBEAR_RSA */

Mercurial > dropbear

annotate rsa.c @ 1765:b688c884dad7