1/*
2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (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_local.h"
12#include <openssl/err.h>
13
14ECDSA_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
19ECDSA_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
29int 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
35int 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
45int 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}
53