/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- DSA_new
- DSA_free
- DSA_up_ref
- DSA_null_method
- DSA_set_default_method
- DSA_get_default_method
- DSA_verify
1 /*
2 * Copyright (c) 2006 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifdef HAVE_CONFIG_H
35 #include <config.h>
36 #endif
37
38 RCSID("$Id$");
39
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <dsa.h>
43
44 #include <roken.h>
45
46 /*
47 *
48 */
49
50 DSA *
51 DSA_new(void)
/* [<][>][^][v][top][bottom][index][help] */
52 {
53 DSA *dsa = calloc(1, sizeof(*dsa));
54 dsa->meth = rk_UNCONST(DSA_get_default_method());
55 dsa->references = 1;
56 return dsa;
57 }
58
59 void
60 DSA_free(DSA *dsa)
/* [<][>][^][v][top][bottom][index][help] */
61 {
62 if (dsa->references <= 0)
63 abort();
64
65 if (--dsa->references > 0)
66 return;
67
68 (*dsa->meth->finish)(dsa);
69
70 #define free_if(f) if (f) { BN_free(f); }
71 free_if(dsa->p);
72 free_if(dsa->q);
73 free_if(dsa->g);
74 free_if(dsa->pub_key);
75 free_if(dsa->priv_key);
76 free_if(dsa->kinv);
77 free_if(dsa->r);
78 #undef free_if
79
80 memset(dsa, 0, sizeof(*dsa));
81 free(dsa);
82
83 }
84
85 int
86 DSA_up_ref(DSA *dsa)
/* [<][>][^][v][top][bottom][index][help] */
87 {
88 return ++dsa->references;
89 }
90
91 /*
92 *
93 */
94
95 static const DSA_METHOD dsa_null_method = {
96 "hcrypto null DSA"
97 };
98
99 const DSA_METHOD *
100 DSA_null_method(void)
/* [<][>][^][v][top][bottom][index][help] */
101 {
102 return &dsa_null_method;
103 }
104
105
106 const DSA_METHOD *dsa_default_mech = &dsa_null_method;
107
108 void
109 DSA_set_default_method(const DSA_METHOD *mech)
/* [<][>][^][v][top][bottom][index][help] */
110 {
111 dsa_default_mech = mech;
112 }
113
114 const DSA_METHOD *
115 DSA_get_default_method(void)
/* [<][>][^][v][top][bottom][index][help] */
116 {
117 return dsa_default_mech;
118 }
119
120 int
121 DSA_verify(int type, const unsigned char * digest, int digest_len,
/* [<][>][^][v][top][bottom][index][help] */
122 const unsigned char *sig, int sig_len, DSA *dsa)
123 {
124 return -1;
125 }