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diff --git a/src/lib/libcrypto/evp/e_gost2814789.c b/src/lib/libcrypto/evp/e_gost2814789.c
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1/* $OpenBSD: e_gost2814789.c,v 1.3 2014/11/18 05:30:07 miod 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#include <string.h>
52
53#include <openssl/opensslconf.h>
54
55#ifndef OPENSSL_NO_GOST
56#include <openssl/evp.h>
57#include <openssl/err.h>
58#include <openssl/gost.h>
59#include "evp_locl.h"
60
61typedef struct {
62 GOST2814789_KEY ks;
63 int param_nid;
64} EVP_GOST2814789_CTX;
65
66static int
67gost2814789_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
68{
69 EVP_GOST2814789_CTX *c = ctx->cipher_data;
70
71 switch (type) {
72 case EVP_CTRL_PBE_PRF_NID:
73 if (ptr != NULL) {
74 *((int *)ptr) = NID_id_HMACGostR3411_94;
75 return 1;
76 } else {
77 return 0;
78 }
79 case EVP_CTRL_INIT:
80 /* Default value to have any s-box set at all */
81 c->param_nid = NID_id_Gost28147_89_CryptoPro_A_ParamSet;
82 return Gost2814789_set_sbox(&c->ks, c->param_nid);
83 case EVP_CTRL_GOST_SET_SBOX:
84 return Gost2814789_set_sbox(&c->ks, arg);
85 default:
86 return -1;
87 }
88}
89
90static int
91gost2814789_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
92 const unsigned char *iv, int enc)
93{
94 EVP_GOST2814789_CTX *c = ctx->cipher_data;
95
96 return Gost2814789_set_key(&c->ks, key, ctx->key_len * 8);
97}
98
99int
100gost2814789_set_asn1_params(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
101{
102 int len = 0;
103 unsigned char *buf = NULL;
104 unsigned char *p = NULL;
105 EVP_GOST2814789_CTX *c = ctx->cipher_data;
106 ASN1_OCTET_STRING *os = NULL;
107 GOST_CIPHER_PARAMS *gcp = GOST_CIPHER_PARAMS_new();
108
109 if (gcp == NULL) {
110 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS,
111 ERR_R_MALLOC_FAILURE);
112 return 0;
113 }
114 if (ASN1_OCTET_STRING_set(gcp->iv, ctx->iv, ctx->cipher->iv_len) == 0) {
115 GOST_CIPHER_PARAMS_free(gcp);
116 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_ASN1_LIB);
117 return 0;
118 }
119 ASN1_OBJECT_free(gcp->enc_param_set);
120 gcp->enc_param_set = OBJ_nid2obj(c->param_nid);
121
122 len = i2d_GOST_CIPHER_PARAMS(gcp, NULL);
123 p = buf = malloc(len);
124 if (buf == NULL) {
125 GOST_CIPHER_PARAMS_free(gcp);
126 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS,
127 ERR_R_MALLOC_FAILURE);
128 return 0;
129 }
130 i2d_GOST_CIPHER_PARAMS(gcp, &p);
131 GOST_CIPHER_PARAMS_free(gcp);
132
133 os = ASN1_OCTET_STRING_new();
134 if (os == NULL) {
135 free(buf);
136 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS,
137 ERR_R_MALLOC_FAILURE);
138 return 0;
139 }
140 if (ASN1_OCTET_STRING_set(os, buf, len) == 0) {
141 ASN1_OCTET_STRING_free(os);
142 free(buf);
143 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_ASN1_LIB);
144 return 0;
145 }
146 free(buf);
147
148 ASN1_TYPE_set(params, V_ASN1_SEQUENCE, os);
149 return 1;
150}
151
152int
153gost2814789_get_asn1_params(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
154{
155 int ret = -1;
156 int len;
157 GOST_CIPHER_PARAMS *gcp = NULL;
158 EVP_GOST2814789_CTX *c = ctx->cipher_data;
159 unsigned char *p;
160
161 if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE)
162 return ret;
163
164 p = params->value.sequence->data;
165
166 gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
167 params->value.sequence->length);
168
169 len = gcp->iv->length;
170 if (len != ctx->cipher->iv_len) {
171 GOST_CIPHER_PARAMS_free(gcp);
172 GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS,
173 GOST_R_INVALID_IV_LENGTH);
174 return -1;
175 }
176
177 if (!Gost2814789_set_sbox(&c->ks, OBJ_obj2nid(gcp->enc_param_set))) {
178 GOST_CIPHER_PARAMS_free(gcp);
179 return -1;
180 }
181 c->param_nid = OBJ_obj2nid(gcp->enc_param_set);
182
183 memcpy(ctx->oiv, gcp->iv->data, len);
184 memcpy(ctx->iv, gcp->iv->data, len);
185
186 GOST_CIPHER_PARAMS_free(gcp);
187
188 return 1;
189}
190
191BLOCK_CIPHER_func_ecb(gost2814789, Gost2814789, EVP_GOST2814789_CTX, ks)
192BLOCK_CIPHER_func_cfb(gost2814789, Gost2814789, 64, EVP_GOST2814789_CTX, ks)
193
194static int
195gost2814789_cnt_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
196 const unsigned char *in, size_t inl)
197{
198 EVP_GOST2814789_CTX *c = ctx->cipher_data;
199
200 while (inl >= EVP_MAXCHUNK) {
201 Gost2814789_cnt_encrypt(in, out, (long)EVP_MAXCHUNK, &c->ks,
202 ctx->iv, ctx->buf, &ctx->num);
203 inl -= EVP_MAXCHUNK;
204 in += EVP_MAXCHUNK;
205 out += EVP_MAXCHUNK;
206 }
207
208 if (inl)
209 Gost2814789_cnt_encrypt(in, out, inl, &c->ks, ctx->iv, ctx->buf,
210 &ctx->num);
211 return 1;
212}
213
214/* gost89 is CFB-64 */
215#define NID_gost89_cfb64 NID_id_Gost28147_89
216
217BLOCK_CIPHER_def_ecb(gost2814789, EVP_GOST2814789_CTX, NID_gost89, 8, 32,
218 EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
219 gost2814789_init_key, NULL, gost2814789_set_asn1_params,
220 gost2814789_get_asn1_params, gost2814789_ctl)
221BLOCK_CIPHER_def_cfb(gost2814789, EVP_GOST2814789_CTX, NID_gost89, 32, 8, 64,
222 EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
223 gost2814789_init_key, NULL, gost2814789_set_asn1_params,
224 gost2814789_get_asn1_params, gost2814789_ctl)
225BLOCK_CIPHER_def1(gost2814789, cnt, cnt, OFB, EVP_GOST2814789_CTX, NID_gost89,
226 1, 32, 8, EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
227 gost2814789_init_key, NULL, gost2814789_set_asn1_params,
228 gost2814789_get_asn1_params, gost2814789_ctl)
229#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-04 00:18:56 +0000