crypto/ec/ecdsa_sign.c

   1 /*
   2  * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/ec.h>
  11 #include "ec_lcl.h"
  12 #include <openssl/err.h>
  13
  14 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey)
  15 {
  16     return ECDSA_do_sign_ex(dgst, dlen, NULL, NULL, eckey);
  17 }
  18
  19 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dlen,
  20                             const BIGNUM *kinv, const BIGNUM *rp,
  21                             EC_KEY *eckey)
  22 {
  23     if (eckey->meth->sign_sig != NULL)
  24         return eckey->meth->sign_sig(dgst, dlen, kinv, rp, eckey);
  25     ECerr(EC_F_ECDSA_DO_SIGN_EX, EC_R_OPERATION_NOT_SUPPORTED);
  26     return NULL;
  27 }
  28
  29 int ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char
  30                *sig, unsigned int *siglen, EC_KEY *eckey)
  31 {
  32     return ECDSA_sign_ex(type, dgst, dlen, sig, siglen, NULL, NULL, eckey);
  33 }
  34
  35 int ECDSA_sign_ex(int type, const unsigned char *dgst, int dlen,
  36                   unsigned char *sig, unsigned int *siglen, const BIGNUM *kinv,
  37                   const BIGNUM *r, EC_KEY *eckey)
  38 {
  39     if (eckey->meth->sign != NULL)
  40         return eckey->meth->sign(type, dgst, dlen, sig, siglen, kinv, r, eckey);
  41     ECerr(EC_F_ECDSA_SIGN_EX, EC_R_OPERATION_NOT_SUPPORTED);
  42     return 0;
  43 }
  44
  45 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
  46                      BIGNUM **rp)
  47 {
  48     if (eckey->meth->sign_setup != NULL)
  49         return eckey->meth->sign_setup(eckey, ctx_in, kinvp, rp);
  50     ECerr(EC_F_ECDSA_SIGN_SETUP, EC_R_OPERATION_NOT_SUPPORTED);
  51     return 0;
  52 }