1 /* $OpenBSD: ecs_sign.c,v 1.9 2022/01/27 20:30:29 tb Exp $ */
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 <openssl/opensslconf.h>
57 #include <openssl/err.h> /* for EVP_R_METHOD_NOT_SUPPORTED */
58 #include <openssl/evp.h> /* for ECDSAerror() */
59
60 #ifndef OPENSSL_NO_ENGINE
61 #include <openssl/engine.h>
62 #endif
63 #include <openssl/err.h>
64 #include <openssl/evp.h>
65
66 #include "bn_lcl.h"
67 #include "ecs_locl.h"
68 #include "ec_lcl.h"
69
70 ECDSA_SIG *
ECDSA_do_sign(const unsigned char * dgst,int dlen,EC_KEY * eckey)71 ECDSA_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey)
72 {
73 return ECDSA_do_sign_ex(dgst, dlen, NULL, NULL, eckey);
74 }
75
76 ECDSA_SIG *
ECDSA_do_sign_ex(const unsigned char * dgst,int dlen,const BIGNUM * kinv,const BIGNUM * rp,EC_KEY * eckey)77 ECDSA_do_sign_ex(const unsigned char *dgst, int dlen, const BIGNUM *kinv,
78 const BIGNUM *rp, EC_KEY *eckey)
79 {
80 if (eckey->meth->sign_sig != NULL)
81 return eckey->meth->sign_sig(dgst, dlen, kinv, rp, eckey);
82 ECDSAerror(EVP_R_METHOD_NOT_SUPPORTED);
83 return 0;
84 }
85
86 int
ECDSA_sign(int type,const unsigned char * dgst,int dlen,unsigned char * sig,unsigned int * siglen,EC_KEY * eckey)87 ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char *sig,
88 unsigned int *siglen, EC_KEY *eckey)
89 {
90 return ECDSA_sign_ex(type, dgst, dlen, sig, siglen, NULL, NULL, eckey);
91 }
92
93 int
ECDSA_sign_ex(int type,const unsigned char * dgst,int dlen,unsigned char * sig,unsigned int * siglen,const BIGNUM * kinv,const BIGNUM * r,EC_KEY * eckey)94 ECDSA_sign_ex(int type, const unsigned char *dgst, int dlen, unsigned char *sig,
95 unsigned int *siglen, const BIGNUM *kinv, const BIGNUM *r, EC_KEY *eckey)
96 {
97 if (eckey->meth->sign != NULL)
98 return eckey->meth->sign(type, dgst, dlen, sig, siglen, kinv, r, eckey);
99 ECDSAerror(EVP_R_METHOD_NOT_SUPPORTED);
100 return 0;
101 }
102
103 int
ECDSA_sign_setup(EC_KEY * eckey,BN_CTX * ctx_in,BIGNUM ** kinvp,BIGNUM ** rp)104 ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp)
105 {
106 if (eckey->meth->sign_setup != NULL)
107 return eckey->meth->sign_setup(eckey, ctx_in, kinvp, rp);
108 ECDSAerror(EVP_R_METHOD_NOT_SUPPORTED);
109 return 0;
110 }
111