Mercurial > dropbear
annotate bignum.c @ 1623:c66c49ebf77d
Remove incorrect _POSIX_C_SOURCE
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 06 Nov 2018 07:25:53 +0800 |
parents | c98e242dc505 |
children | 1051e4eea25a |
rev | line source |
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1 /* |
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2 * Dropbear - a SSH2 server |
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3 * |
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4 * Copyright (c) 2002,2003 Matt Johnston |
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5 * All rights reserved. |
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6 * |
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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8 * of this software and associated documentation files (the "Software"), to deal |
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9 * in the Software without restriction, including without limitation the rights |
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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11 * copies of the Software, and to permit persons to whom the Software is |
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12 * furnished to do so, subject to the following conditions: |
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13 * |
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14 * The above copyright notice and this permission notice shall be included in |
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15 * all copies or substantial portions of the Software. |
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16 * |
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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23 * SOFTWARE. */ |
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24 |
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25 /* Contains helper functions for mp_int handling */ |
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26 |
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27 #include "includes.h" |
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28 #include "dbutil.h" |
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29 |
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30 /* wrapper for mp_init, failing fatally on errors (memory allocation) */ |
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31 void m_mp_init(mp_int *mp) { |
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32 |
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33 if (mp_init(mp) != MP_OKAY) { |
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34 dropbear_exit("Mem alloc error"); |
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35 } |
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36 } |
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37 |
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38 /* simplified duplication of bn_mp_multi's mp_init_multi, but die fatally |
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39 * on error */ |
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40 void m_mp_init_multi(mp_int *mp, ...) |
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41 { |
1250 | 42 mp_int* cur_arg = mp; |
43 va_list args; | |
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44 |
1250 | 45 va_start(args, mp); /* init args to next argument from caller */ |
46 while (cur_arg != NULL) { | |
47 if (mp_init(cur_arg) != MP_OKAY) { | |
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48 dropbear_exit("Mem alloc error"); |
1250 | 49 } |
50 cur_arg = va_arg(args, mp_int*); | |
51 } | |
52 va_end(args); | |
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53 } |
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54 |
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55 void m_mp_alloc_init_multi(mp_int **mp, ...) |
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56 { |
1250 | 57 mp_int** cur_arg = mp; |
58 va_list args; | |
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59 |
1250 | 60 va_start(args, mp); /* init args to next argument from caller */ |
61 while (cur_arg != NULL) { | |
62 *cur_arg = m_malloc(sizeof(mp_int)); | |
63 if (mp_init(*cur_arg) != MP_OKAY) { | |
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64 dropbear_exit("Mem alloc error"); |
1250 | 65 } |
66 cur_arg = va_arg(args, mp_int**); | |
67 } | |
68 va_end(args); | |
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69 } |
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70 |
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71 void m_mp_free_multi(mp_int **mp, ...) |
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72 { |
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73 mp_int** cur_arg = mp; |
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74 va_list args; |
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75 |
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76 va_start(args, mp); /* init args to next argument from caller */ |
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77 while (cur_arg != NULL) { |
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78 if (*cur_arg) { |
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79 mp_clear(*cur_arg); |
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80 } |
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81 m_free(*cur_arg); |
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82 cur_arg = va_arg(args, mp_int**); |
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83 } |
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84 va_end(args); |
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85 } |
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86 |
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87 void bytes_to_mp(mp_int *mp, const unsigned char* bytes, unsigned int len) { |
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88 |
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89 if (mp_read_unsigned_bin(mp, (unsigned char*)bytes, len) != MP_OKAY) { |
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90 dropbear_exit("Mem alloc error"); |
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91 } |
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92 } |
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93 |
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94 /* hash the ssh representation of the mp_int mp */ |
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95 void hash_process_mp(const struct ltc_hash_descriptor *hash_desc, |
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96 hash_state *hs, mp_int *mp) { |
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97 buffer * buf; |
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98 |
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99 buf = buf_new(512 + 20); /* max buffer is a 4096 bit key, |
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100 plus header + some leeway*/ |
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101 buf_putmpint(buf, mp); |
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102 hash_desc->process(hs, buf->data, buf->len); |
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103 buf_free(buf); |
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104 } |