~ubuntu-branches/ubuntu/vivid/nettle/vivid

/* rsa-sha1-verify.c

 *

 * Verifying signatures created with RSA and SHA1.

 */

/* nettle, low-level cryptographics library

 *

 * Copyright (C) 2001, 2003 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_sha1_verify(const struct rsa_public_key *key,

                struct sha1_ctx *hash,

                const mpz_t s)

{

  int res;

  mpz_t m;

  mpz_init(m);

  res = (pkcs1_rsa_sha1_encode(m, key->size, hash)

	 && _rsa_verify(key, m, s));

  mpz_clear(m);

  return res;

}

int

rsa_sha1_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_sha1_encode_digest(m, key->size, digest)

	 && _rsa_verify(key, m, s));

  mpz_clear(m);

  return res;

}