1*2139Sjp161948 /* crypto/ecdsa/ecdsa_sign.c */
2*2139Sjp161948 /* ====================================================================
3*2139Sjp161948 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
4*2139Sjp161948 *
5*2139Sjp161948 * Redistribution and use in source and binary forms, with or without
6*2139Sjp161948 * modification, are permitted provided that the following conditions
7*2139Sjp161948 * are met:
8*2139Sjp161948 *
9*2139Sjp161948 * 1. Redistributions of source code must retain the above copyright
10*2139Sjp161948 * notice, this list of conditions and the following disclaimer.
11*2139Sjp161948 *
12*2139Sjp161948 * 2. Redistributions in binary form must reproduce the above copyright
13*2139Sjp161948 * notice, this list of conditions and the following disclaimer in
14*2139Sjp161948 * the documentation and/or other materials provided with the
15*2139Sjp161948 * distribution.
16*2139Sjp161948 *
17*2139Sjp161948 * 3. All advertising materials mentioning features or use of this
18*2139Sjp161948 * software must display the following acknowledgment:
19*2139Sjp161948 * "This product includes software developed by the OpenSSL Project
20*2139Sjp161948 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21*2139Sjp161948 *
22*2139Sjp161948 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23*2139Sjp161948 * endorse or promote products derived from this software without
24*2139Sjp161948 * prior written permission. For written permission, please contact
25*2139Sjp161948 * openssl-core@OpenSSL.org.
26*2139Sjp161948 *
27*2139Sjp161948 * 5. Products derived from this software may not be called "OpenSSL"
28*2139Sjp161948 * nor may "OpenSSL" appear in their names without prior written
29*2139Sjp161948 * permission of the OpenSSL Project.
30*2139Sjp161948 *
31*2139Sjp161948 * 6. Redistributions of any form whatsoever must retain the following
32*2139Sjp161948 * acknowledgment:
33*2139Sjp161948 * "This product includes software developed by the OpenSSL Project
34*2139Sjp161948 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35*2139Sjp161948 *
36*2139Sjp161948 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37*2139Sjp161948 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38*2139Sjp161948 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39*2139Sjp161948 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40*2139Sjp161948 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41*2139Sjp161948 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42*2139Sjp161948 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43*2139Sjp161948 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44*2139Sjp161948 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45*2139Sjp161948 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46*2139Sjp161948 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47*2139Sjp161948 * OF THE POSSIBILITY OF SUCH DAMAGE.
48*2139Sjp161948 * ====================================================================
49*2139Sjp161948 *
50*2139Sjp161948 * This product includes cryptographic software written by Eric Young
51*2139Sjp161948 * (eay@cryptsoft.com). This product includes software written by Tim
52*2139Sjp161948 * Hudson (tjh@cryptsoft.com).
53*2139Sjp161948 *
54*2139Sjp161948 */
55*2139Sjp161948
56*2139Sjp161948 #include "ecs_locl.h"
57*2139Sjp161948 #ifndef OPENSSL_NO_ENGINE
58*2139Sjp161948 #include <openssl/engine.h>
59*2139Sjp161948 #endif
60*2139Sjp161948
ECDSA_do_sign(const unsigned char * dgst,int dlen,EC_KEY * eckey)61*2139Sjp161948 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey)
62*2139Sjp161948 {
63*2139Sjp161948 return ECDSA_do_sign_ex(dgst, dlen, NULL, NULL, eckey);
64*2139Sjp161948 }
65*2139Sjp161948
ECDSA_do_sign_ex(const unsigned char * dgst,int dlen,const BIGNUM * kinv,const BIGNUM * rp,EC_KEY * eckey)66*2139Sjp161948 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dlen,
67*2139Sjp161948 const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey)
68*2139Sjp161948 {
69*2139Sjp161948 ECDSA_DATA *ecdsa = ecdsa_check(eckey);
70*2139Sjp161948 if (ecdsa == NULL)
71*2139Sjp161948 return NULL;
72*2139Sjp161948 return ecdsa->meth->ecdsa_do_sign(dgst, dlen, NULL, NULL, eckey);
73*2139Sjp161948 }
74*2139Sjp161948
ECDSA_sign(int type,const unsigned char * dgst,int dlen,unsigned char * sig,unsigned int * siglen,EC_KEY * eckey)75*2139Sjp161948 int ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char
76*2139Sjp161948 *sig, unsigned int *siglen, EC_KEY *eckey)
77*2139Sjp161948 {
78*2139Sjp161948 return ECDSA_sign_ex(type, dgst, dlen, sig, siglen, NULL, NULL, eckey);
79*2139Sjp161948 }
80*2139Sjp161948
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)81*2139Sjp161948 int ECDSA_sign_ex(int type, const unsigned char *dgst, int dlen, unsigned char
82*2139Sjp161948 *sig, unsigned int *siglen, const BIGNUM *kinv, const BIGNUM *r,
83*2139Sjp161948 EC_KEY *eckey)
84*2139Sjp161948 {
85*2139Sjp161948 ECDSA_SIG *s;
86*2139Sjp161948 s = ECDSA_do_sign_ex(dgst, dlen, kinv, r, eckey);
87*2139Sjp161948 if (s == NULL)
88*2139Sjp161948 {
89*2139Sjp161948 *siglen=0;
90*2139Sjp161948 return 0;
91*2139Sjp161948 }
92*2139Sjp161948 *siglen = i2d_ECDSA_SIG(s, &sig);
93*2139Sjp161948 ECDSA_SIG_free(s);
94*2139Sjp161948 return 1;
95*2139Sjp161948 }
96*2139Sjp161948
ECDSA_sign_setup(EC_KEY * eckey,BN_CTX * ctx_in,BIGNUM ** kinvp,BIGNUM ** rp)97*2139Sjp161948 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
98*2139Sjp161948 BIGNUM **rp)
99*2139Sjp161948 {
100*2139Sjp161948 ECDSA_DATA *ecdsa = ecdsa_check(eckey);
101*2139Sjp161948 if (ecdsa == NULL)
102*2139Sjp161948 return 0;
103*2139Sjp161948 return ecdsa->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp);
104*2139Sjp161948 }
105