dsa-sha1-sign.c 1.78 KB
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/* dsa-sha1-sign.c
 *
 * The original DSA publickey algorithm, using SHA-1.
 */

/* nettle, low-level cryptographics library
 *
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Niels Möller committed
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 * Copyright (C) 2010 Niels Möller
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 *  
 * 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
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 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02111-1301, USA.
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 */

#if HAVE_CONFIG_H
# include "config.h"
#endif

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#include "dsa-compat.h"
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int
dsa_sha1_sign_digest(const struct dsa_public_key *pub,
		     const struct dsa_private_key *key,
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		     void *random_ctx, nettle_random_func *random,
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		     const uint8_t *digest,
		     struct dsa_signature *signature)
{
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  return dsa_sign((const struct dsa_params *) pub, key->x,
		  random_ctx, random,
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		  SHA1_DIGEST_SIZE, digest, signature);
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}


int
dsa_sha1_sign(const struct dsa_public_key *pub,
	      const struct dsa_private_key *key,
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	      void *random_ctx, nettle_random_func *random,
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	      struct sha1_ctx *hash,
	      struct dsa_signature *signature)
{
  uint8_t digest[SHA1_DIGEST_SIZE];
  sha1_digest(hash, sizeof(digest), digest);
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  return dsa_sign((const struct dsa_params *) pub, key->x,
		  random_ctx, random,
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		  sizeof(digest), digest, signature);
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}