1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#include <openssl/cipher.h>
58#include <openssl/des.h>
59#include <openssl/nid.h>
60
61#include "internal.h"
62#include "../delocate.h"
63
64
65typedef struct {
66 union {
67 double align;
68 DES_key_schedule ks;
69 } ks;
70} EVP_DES_KEY;
71
72static int des_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
73 const uint8_t *iv, int enc) {
74 DES_cblock *deskey = (DES_cblock *)key;
75 EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
76
77 DES_set_key(deskey, &dat->ks.ks);
78 return 1;
79}
80
81static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
82 size_t in_len) {
83 EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
84
85 DES_ncbc_encrypt(in, out, in_len, &dat->ks.ks, (DES_cblock *)ctx->iv,
86 ctx->encrypt);
87
88 return 1;
89}
90
91DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_cbc) {
92 memset(out, 0, sizeof(EVP_CIPHER));
93 out->nid = NID_des_cbc;
94 out->block_size = 8;
95 out->key_len = 8;
96 out->iv_len = 8;
97 out->ctx_size = sizeof(EVP_DES_KEY);
98 out->flags = EVP_CIPH_CBC_MODE;
99 out->init = des_init_key;
100 out->cipher = des_cbc_cipher;
101}
102
103static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
104 size_t in_len) {
105 if (in_len < ctx->cipher->block_size) {
106 return 1;
107 }
108 in_len -= ctx->cipher->block_size;
109
110 EVP_DES_KEY *dat = (EVP_DES_KEY *) ctx->cipher_data;
111 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
112 DES_ecb_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
113 &dat->ks.ks, ctx->encrypt);
114 }
115 return 1;
116}
117
118DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ecb) {
119 memset(out, 0, sizeof(EVP_CIPHER));
120 out->nid = NID_des_ecb;
121 out->block_size = 8;
122 out->key_len = 8;
123 out->iv_len = 0;
124 out->ctx_size = sizeof(EVP_DES_KEY);
125 out->flags = EVP_CIPH_ECB_MODE;
126 out->init = des_init_key;
127 out->cipher = des_ecb_cipher;
128}
129
130typedef struct {
131 union {
132 double align;
133 DES_key_schedule ks[3];
134 } ks;
135} DES_EDE_KEY;
136
137static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
138 const uint8_t *iv, int enc) {
139 DES_cblock *deskey = (DES_cblock *)key;
140 DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
141
142 DES_set_key(&deskey[0], &dat->ks.ks[0]);
143 DES_set_key(&deskey[1], &dat->ks.ks[1]);
144 DES_set_key(&deskey[2], &dat->ks.ks[2]);
145
146 return 1;
147}
148
149static int des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
150 const uint8_t *in, size_t in_len) {
151 DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
152
153 DES_ede3_cbc_encrypt(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
154 &dat->ks.ks[2], (DES_cblock *)ctx->iv, ctx->encrypt);
155
156 return 1;
157}
158
159DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3_cbc) {
160 memset(out, 0, sizeof(EVP_CIPHER));
161 out->nid = NID_des_ede3_cbc;
162 out->block_size = 8;
163 out->key_len = 24;
164 out->iv_len = 8;
165 out->ctx_size = sizeof(DES_EDE_KEY);
166 out->flags = EVP_CIPH_CBC_MODE;
167 out->init = des_ede3_init_key;
168 out->cipher = des_ede3_cbc_cipher;
169}
170
171static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
172 const uint8_t *iv, int enc) {
173 DES_cblock *deskey = (DES_cblock *) key;
174 DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
175
176 DES_set_key(&deskey[0], &dat->ks.ks[0]);
177 DES_set_key(&deskey[1], &dat->ks.ks[1]);
178 DES_set_key(&deskey[0], &dat->ks.ks[2]);
179
180 return 1;
181}
182
183DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede_cbc) {
184 memset(out, 0, sizeof(EVP_CIPHER));
185 out->nid = NID_des_ede_cbc;
186 out->block_size = 8;
187 out->key_len = 16;
188 out->iv_len = 8;
189 out->ctx_size = sizeof(DES_EDE_KEY);
190 out->flags = EVP_CIPH_CBC_MODE;
191 out->init = des_ede_init_key;
192 out->cipher = des_ede3_cbc_cipher;
193}
194
195static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
196 const uint8_t *in, size_t in_len) {
197 if (in_len < ctx->cipher->block_size) {
198 return 1;
199 }
200 in_len -= ctx->cipher->block_size;
201
202 DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
203 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
204 DES_ecb3_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
205 &dat->ks.ks[0], &dat->ks.ks[1], &dat->ks.ks[2],
206 ctx->encrypt);
207 }
208 return 1;
209}
210
211DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede) {
212 memset(out, 0, sizeof(EVP_CIPHER));
213 out->nid = NID_des_ede_ecb;
214 out->block_size = 8;
215 out->key_len = 16;
216 out->iv_len = 0;
217 out->ctx_size = sizeof(DES_EDE_KEY);
218 out->flags = EVP_CIPH_ECB_MODE;
219 out->init = des_ede_init_key;
220 out->cipher = des_ede_ecb_cipher;
221}
222
223DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3) {
224 memset(out, 0, sizeof(EVP_CIPHER));
225 out->nid = NID_des_ede3_ecb;
226 out->block_size = 8;
227 out->key_len = 24;
228 out->iv_len = 0;
229 out->ctx_size = sizeof(DES_EDE_KEY);
230 out->flags = EVP_CIPH_ECB_MODE;
231 out->init = des_ede3_init_key;
232 out->cipher = des_ede_ecb_cipher;
233}
234
235const EVP_CIPHER* EVP_des_ede3_ecb(void) {
236 return EVP_des_ede3();
237}
238