1 /* $OpenBSD: gost89imit_ameth.c,v 1.3 2021/12/12 21:30:14 tb Exp $ */
2 /*
3  * Copyright (c) 2014 Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
4  * Copyright (c) 2005-2006 Cryptocom LTD
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
15  *    the documentation and/or other materials provided with the
16  *    distribution.
17  *
18  * 3. All advertising materials mentioning features or use of this
19  *    software must display the following acknowledgment:
20  *    "This product includes software developed by the OpenSSL Project
21  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
22  *
23  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
24  *    endorse or promote products derived from this software without
25  *    prior written permission. For written permission, please contact
26  *    openssl-core@openssl.org.
27  *
28  * 5. Products derived from this software may not be called "OpenSSL"
29  *    nor may "OpenSSL" appear in their names without prior written
30  *    permission of the OpenSSL Project.
31  *
32  * 6. Redistributions of any form whatsoever must retain the following
33  *    acknowledgment:
34  *    "This product includes software developed by the OpenSSL Project
35  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
36  *
37  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
38  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
39  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
40  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
43  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
44  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
45  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
46  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
47  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
48  * OF THE POSSIBILITY OF SUCH DAMAGE.
49  * ====================================================================
50  */
51 
52 #include <openssl/opensslconf.h>
53 
54 #ifndef OPENSSL_NO_GOST
55 #include <openssl/evp.h>
56 
57 #include "asn1_locl.h"
58 #include "evp_locl.h"
59 
60 static void
61 mackey_free_gost(EVP_PKEY *pk)
62 {
63 	free(pk->pkey.ptr);
64 }
65 
66 static int
67 mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
68 {
69 	switch (op) {
70 	case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
71 		*(int *)arg2 = NID_id_Gost28147_89_MAC;
72 		return 2;
73 	}
74 	return -2;
75 }
76 
77 const EVP_PKEY_ASN1_METHOD gostimit_asn1_meth = {
78 	.pkey_id = EVP_PKEY_GOSTIMIT,
79 	.pkey_base_id = EVP_PKEY_GOSTIMIT,
80 	.pkey_flags = ASN1_PKEY_SIGPARAM_NULL,
81 
82 	.pem_str = "GOST-MAC",
83 	.info = "GOST 28147-89 MAC",
84 
85 	.pkey_free = mackey_free_gost,
86 	.pkey_ctrl = mac_ctrl_gost,
87 };
88 
89 #endif
90