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#include <config.h>
35
36#include <stdio.h>
37#include <stdlib.h>
38#include <dsa.h>
39
40#include <roken.h>
41
42/*
43 *
44 */
45
46DSA *
47DSA_new(void)
48{
49    DSA *dsa = calloc(1, sizeof(*dsa));
50    dsa->meth = rk_UNCONST(DSA_get_default_method());
51    dsa->references = 1;
52    return dsa;
53}
54
55void
56DSA_free(DSA *dsa)
57{
58    if (dsa->references <= 0)
59	abort();
60
61    if (--dsa->references > 0)
62	return;
63
64    (*dsa->meth->finish)(dsa);
65
66#define free_if(f) if (f) { BN_free(f); }
67    free_if(dsa->p);
68    free_if(dsa->q);
69    free_if(dsa->g);
70    free_if(dsa->pub_key);
71    free_if(dsa->priv_key);
72    free_if(dsa->kinv);
73    free_if(dsa->r);
74#undef free_if
75
76    memset(dsa, 0, sizeof(*dsa));
77    free(dsa);
78
79}
80
81int
82DSA_up_ref(DSA *dsa)
83{
84    return ++dsa->references;
85}
86
87/*
88 *
89 */
90
91static const DSA_METHOD dsa_null_method = {
92    "hcrypto null DSA"
93};
94
95const DSA_METHOD *
96DSA_null_method(void)
97{
98    return &dsa_null_method;
99}
100
101
102const DSA_METHOD *dsa_default_mech = &dsa_null_method;
103
104void
105DSA_set_default_method(const DSA_METHOD *mech)
106{
107    dsa_default_mech = mech;
108}
109
110const DSA_METHOD *
111DSA_get_default_method(void)
112{
113    return dsa_default_mech;
114}
115
116int
117DSA_verify(int type, const unsigned char * digest, int digest_len,
118	   const unsigned char *sig, int sig_len, DSA *dsa)
119{
120    return -1;
121}
122