Branch data 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 : 71 : ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dlen,
68 : : const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey)
69 : : {
70 : 71 : ECDSA_DATA *ecdsa = ecdsa_check(eckey);
71 [ + - ]: 71 : if (ecdsa == NULL)
72 : : return NULL;
73 : 71 : return ecdsa->meth->ecdsa_do_sign(dgst, dlen, kinv, rp, eckey);
74 : : }
75 : :
76 : 67 : int ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char
77 : : *sig, unsigned int *siglen, EC_KEY *eckey)
78 : : {
79 : 67 : return ECDSA_sign_ex(type, dgst, dlen, sig, siglen, NULL, NULL, eckey);
80 : : }
81 : :
82 : 67 : int ECDSA_sign_ex(int type, const unsigned char *dgst, int dlen, unsigned char
83 : : *sig, unsigned int *siglen, const BIGNUM *kinv, const BIGNUM *r,
84 : : EC_KEY *eckey)
85 : : {
86 : : ECDSA_SIG *s;
87 : 67 : RAND_seed(dgst, dlen);
88 : 67 : s = ECDSA_do_sign_ex(dgst, dlen, kinv, r, eckey);
89 [ - + ]: 67 : if (s == NULL)
90 : : {
91 : 0 : *siglen=0;
92 : 0 : return 0;
93 : : }
94 : 67 : *siglen = i2d_ECDSA_SIG(s, &sig);
95 : 67 : ECDSA_SIG_free(s);
96 : 67 : return 1;
97 : : }
98 : :
99 : 4 : int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
100 : : BIGNUM **rp)
101 : : {
102 : 4 : ECDSA_DATA *ecdsa = ecdsa_check(eckey);
103 [ + - ]: 4 : if (ecdsa == NULL)
104 : : return 0;
105 : 4 : return ecdsa->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp);
106 : : }
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