/src/openssl/crypto/dsa/dsa_sign.c
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1 | | /* crypto/dsa/dsa_sign.c */ |
2 | | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
3 | | * All rights reserved. |
4 | | * |
5 | | * This package is an SSL implementation written |
6 | | * by Eric Young (eay@cryptsoft.com). |
7 | | * The implementation was written so as to conform with Netscapes SSL. |
8 | | * |
9 | | * This library is free for commercial and non-commercial use as long as |
10 | | * the following conditions are aheared to. The following conditions |
11 | | * apply to all code found in this distribution, be it the RC4, RSA, |
12 | | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
13 | | * included with this distribution is covered by the same copyright terms |
14 | | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
15 | | * |
16 | | * Copyright remains Eric Young's, and as such any Copyright notices in |
17 | | * the code are not to be removed. |
18 | | * If this package is used in a product, Eric Young should be given attribution |
19 | | * as the author of the parts of the library used. |
20 | | * This can be in the form of a textual message at program startup or |
21 | | * in documentation (online or textual) provided with the package. |
22 | | * |
23 | | * Redistribution and use in source and binary forms, with or without |
24 | | * modification, are permitted provided that the following conditions |
25 | | * are met: |
26 | | * 1. Redistributions of source code must retain the copyright |
27 | | * notice, this list of conditions and the following disclaimer. |
28 | | * 2. Redistributions in binary form must reproduce the above copyright |
29 | | * notice, this list of conditions and the following disclaimer in the |
30 | | * documentation and/or other materials provided with the distribution. |
31 | | * 3. All advertising materials mentioning features or use of this software |
32 | | * must display the following acknowledgement: |
33 | | * "This product includes cryptographic software written by |
34 | | * Eric Young (eay@cryptsoft.com)" |
35 | | * The word 'cryptographic' can be left out if the rouines from the library |
36 | | * being used are not cryptographic related :-). |
37 | | * 4. If you include any Windows specific code (or a derivative thereof) from |
38 | | * the apps directory (application code) you must include an acknowledgement: |
39 | | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
40 | | * |
41 | | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
42 | | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
43 | | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
44 | | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
45 | | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
46 | | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
47 | | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
48 | | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
49 | | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
50 | | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
51 | | * SUCH DAMAGE. |
52 | | * |
53 | | * The licence and distribution terms for any publically available version or |
54 | | * derivative of this code cannot be changed. i.e. this code cannot simply be |
55 | | * copied and put under another distribution licence |
56 | | * [including the GNU Public Licence.] |
57 | | */ |
58 | | |
59 | | /* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */ |
60 | | |
61 | | #include "cryptlib.h" |
62 | | #include <openssl/dsa.h> |
63 | | #include <openssl/rand.h> |
64 | | #include <openssl/bn.h> |
65 | | |
66 | | DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen, DSA *dsa) |
67 | 0 | { |
68 | | #ifdef OPENSSL_FIPS |
69 | | if (FIPS_mode() && !(dsa->meth->flags & DSA_FLAG_FIPS_METHOD) |
70 | | && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW)) { |
71 | | DSAerr(DSA_F_DSA_DO_SIGN, DSA_R_NON_FIPS_DSA_METHOD); |
72 | | return NULL; |
73 | | } |
74 | | #endif |
75 | 0 | return dsa->meth->dsa_do_sign(dgst, dlen, dsa); |
76 | 0 | } |
77 | | |
78 | | int DSA_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp) |
79 | 0 | { |
80 | | #ifdef OPENSSL_FIPS |
81 | | if (FIPS_mode() && !(dsa->meth->flags & DSA_FLAG_FIPS_METHOD) |
82 | | && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW)) { |
83 | | DSAerr(DSA_F_DSA_SIGN_SETUP, DSA_R_NON_FIPS_DSA_METHOD); |
84 | | return 0; |
85 | | } |
86 | | #endif |
87 | 0 | return dsa->meth->dsa_sign_setup(dsa, ctx_in, kinvp, rp); |
88 | 0 | } |
89 | | |
90 | | DSA_SIG *DSA_SIG_new(void) |
91 | 0 | { |
92 | 0 | DSA_SIG *sig; |
93 | 0 | sig = OPENSSL_malloc(sizeof(DSA_SIG)); |
94 | 0 | if (!sig) |
95 | 0 | return NULL; |
96 | 0 | sig->r = NULL; |
97 | 0 | sig->s = NULL; |
98 | 0 | return sig; |
99 | 0 | } |
100 | | |
101 | | void DSA_SIG_free(DSA_SIG *sig) |
102 | 0 | { |
103 | 0 | if (sig) { |
104 | 0 | if (sig->r) |
105 | 0 | BN_free(sig->r); |
106 | 0 | if (sig->s) |
107 | 0 | BN_free(sig->s); |
108 | 0 | OPENSSL_free(sig); |
109 | 0 | } |
110 | 0 | } |