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527c0f37 | 1 | /* rsa-pkcs1-sign.c |
90112edb NM |
2 | |
3 | PKCS#1 version 1.5 signatures. | |
4 | ||
5 | Copyright (C) 2012 Niels Möller | |
6 | ||
7 | This file is part of GNU Nettle. | |
8 | ||
9 | GNU Nettle is free software: you can redistribute it and/or | |
10 | modify it under the terms of either: | |
11 | ||
12 | * the GNU Lesser General Public License as published by the Free | |
13 | Software Foundation; either version 3 of the License, or (at your | |
14 | option) any later version. | |
15 | ||
16 | or | |
17 | ||
18 | * the GNU General Public License as published by the Free | |
19 | Software Foundation; either version 2 of the License, or (at your | |
20 | option) any later version. | |
21 | ||
22 | or both in parallel, as here. | |
23 | ||
24 | GNU Nettle is distributed in the hope that it will be useful, | |
25 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 | General Public License for more details. | |
28 | ||
29 | You should have received copies of the GNU General Public License and | |
30 | the GNU Lesser General Public License along with this program. If | |
31 | not, see http://www.gnu.org/licenses/. | |
32 | */ | |
527c0f37 NM |
33 | |
34 | #if HAVE_CONFIG_H | |
35 | # include "config.h" | |
36 | #endif | |
37 | ||
38 | #include "rsa.h" | |
da81c86a | 39 | #include "rsa-internal.h" |
527c0f37 NM |
40 | |
41 | #include "pkcs1.h" | |
42 | ||
43 | int | |
44 | rsa_pkcs1_verify(const struct rsa_public_key *key, | |
a7826587 | 45 | size_t length, const uint8_t *digest_info, |
527c0f37 NM |
46 | const mpz_t s) |
47 | { | |
48 | int res; | |
49 | mpz_t m; | |
50 | ||
51 | mpz_init (m); | |
52 | ||
53 | res = (pkcs1_rsa_digest_encode (m, key->size, length, digest_info) | |
54 | && _rsa_verify (key, m, s)); | |
55 | ||
56 | mpz_clear(m); | |
57 | ||
58 | return res; | |
59 | } |