Line data    Source code

       1             : /* crypto/ecdsa/ecdsa_sign.c */
       2             : /* ====================================================================
       3             :  * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
       4             :  *
       5             :  * Redistribution and use in source and binary forms, with or without
       6             :  * modification, are permitted provided that the following conditions
       7             :  * are met:
       8             :  *
       9             :  * 1. Redistributions of source code must retain the above copyright
      10             :  *    notice, this list of conditions and the following disclaimer.
      11             :  *
      12             :  * 2. Redistributions in binary form must reproduce the above copyright
      13             :  *    notice, this list of conditions and the following disclaimer in
      14             :  *    the documentation and/or other materials provided with the
      15             :  *    distribution.
      16             :  *
      17             :  * 3. All advertising materials mentioning features or use of this
      18             :  *    software must display the following acknowledgment:
      19             :  *    "This product includes software developed by the OpenSSL Project
      20             :  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
      21             :  *
      22             :  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
      23             :  *    endorse or promote products derived from this software without
      24             :  *    prior written permission. For written permission, please contact
      25             :  *    openssl-core@OpenSSL.org.
      26             :  *
      27             :  * 5. Products derived from this software may not be called "OpenSSL"
      28             :  *    nor may "OpenSSL" appear in their names without prior written
      29             :  *    permission of the OpenSSL Project.
      30             :  *
      31             :  * 6. Redistributions of any form whatsoever must retain the following
      32             :  *    acknowledgment:
      33             :  *    "This product includes software developed by the OpenSSL Project
      34             :  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
      35             :  *
      36             :  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
      37             :  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      38             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
      39             :  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
      40             :  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      41             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      42             :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
      43             :  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      44             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
      45             :  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      46             :  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
      47             :  * OF THE POSSIBILITY OF SUCH DAMAGE.
      48             :  * ====================================================================
      49             :  *
      50             :  * This product includes cryptographic software written by Eric Young
      51             :  * (eay@cryptsoft.com).  This product includes software written by Tim
      52             :  * Hudson (tjh@cryptsoft.com).
      53             :  *
      54             :  */
      55             : 
      56             : #include "ecs_locl.h"
      57             : #ifndef OPENSSL_NO_ENGINE
      58             : # include <openssl/engine.h>
      59             : #endif
      60             : #include <openssl/rand.h>
      61             : 
      62           0 : ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey)
      63             : {
      64           0 :     return ECDSA_do_sign_ex(dgst, dlen, NULL, NULL, eckey);
      65             : }
      66             : 
      67           0 : ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dlen,
      68             :                             const BIGNUM *kinv, const BIGNUM *rp,
      69             :                             EC_KEY *eckey)
      70             : {
      71           0 :     ECDSA_DATA *ecdsa = ecdsa_check(eckey);
      72           0 :     if (ecdsa == NULL)
      73             :         return NULL;
      74           0 :     return ecdsa->meth->ecdsa_do_sign(dgst, dlen, kinv, rp, eckey);
      75             : }
      76             : 
      77           0 : int ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char
      78             :                *sig, unsigned int *siglen, EC_KEY *eckey)
      79             : {
      80           0 :     return ECDSA_sign_ex(type, dgst, dlen, sig, siglen, NULL, NULL, eckey);
      81             : }
      82             : 
      83           0 : int ECDSA_sign_ex(int type, const unsigned char *dgst, int dlen, unsigned char
      84             :                   *sig, unsigned int *siglen, const BIGNUM *kinv,
      85             :                   const BIGNUM *r, EC_KEY *eckey)
      86             : {
      87             :     ECDSA_SIG *s;
      88           0 :     RAND_seed(dgst, dlen);
      89           0 :     s = ECDSA_do_sign_ex(dgst, dlen, kinv, r, eckey);
      90           0 :     if (s == NULL) {
      91           0 :         *siglen = 0;
      92           0 :         return 0;
      93             :     }
      94           0 :     *siglen = i2d_ECDSA_SIG(s, &sig);
      95           0 :     ECDSA_SIG_free(s);
      96           0 :     return 1;
      97             : }
      98             : 
      99           0 : int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
     100             :                      BIGNUM **rp)
     101             : {
     102           0 :     ECDSA_DATA *ecdsa = ecdsa_check(eckey);
     103           0 :     if (ecdsa == NULL)
     104             :         return 0;
     105           0 :     return ecdsa->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp);
     106             : }