1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
|
/* rsa-sha512-verify.c
*
* Verifying signatures created with RSA and SHA512.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001, 2003, 2006, 2010 Niels Möller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The nettle library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02111-1301, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>
#include "rsa.h"
#include "bignum.h"
#include "pkcs1.h"
int
rsa_sha512_verify(const struct rsa_public_key *key,
struct sha512_ctx *hash,
const mpz_t s)
{
int res;
mpz_t m;
mpz_init(m);
res = (pkcs1_rsa_sha512_encode(m, key->size, hash)
&& _rsa_verify(key, m, s));
mpz_clear(m);
return res;
}
int
rsa_sha512_verify_digest(const struct rsa_public_key *key,
const uint8_t *digest,
const mpz_t s)
{
int res;
mpz_t m;
mpz_init(m);
res = (pkcs1_rsa_sha512_encode_digest(m, key->size, digest)
&& _rsa_verify(key, m, s));
mpz_clear(m);
return res;
}
|