fips_dh_lib.c revision 296465
1/* fips_dh_lib.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 2007.
5 */
6/* ====================================================================
7 * Copyright (c) 2007 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com).  This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
60#include <string.h>
61#include <openssl/bn.h>
62#include <openssl/dh.h>
63
64/*
65 * Minimal FIPS versions of FIPS_dh_new() and FIPS_dh_free(): to reduce
66 * external dependencies.
67 */
68
69DH *FIPS_dh_new(void)
70{
71    DH *ret;
72    ret = OPENSSL_malloc(sizeof(DH));
73    if (!ret)
74        return NULL;
75    memset(ret, 0, sizeof(DH));
76    ret->meth = DH_OpenSSL();
77    if (ret->meth->init)
78        ret->meth->init(ret);
79    return ret;
80}
81
82void FIPS_dh_free(DH *r)
83{
84    if (!r)
85        return;
86    if (r->meth->finish)
87        r->meth->finish(r);
88    if (r->p != NULL)
89        BN_clear_free(r->p);
90    if (r->g != NULL)
91        BN_clear_free(r->g);
92    if (r->q != NULL)
93        BN_clear_free(r->q);
94    if (r->j != NULL)
95        BN_clear_free(r->j);
96    if (r->seed)
97        OPENSSL_free(r->seed);
98    if (r->counter != NULL)
99        BN_clear_free(r->counter);
100    if (r->pub_key != NULL)
101        BN_clear_free(r->pub_key);
102    if (r->priv_key != NULL)
103        BN_clear_free(r->priv_key);
104    OPENSSL_free(r);
105}
106