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
63
64 typedef struct {
65 union {
66 double align;
67 DES_key_schedule ks;
68 } ks;
69 } EVP_DES_KEY;
70
des_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)71 static int des_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
72 const uint8_t *iv, int enc) {
73 DES_cblock *deskey = (DES_cblock *)key;
74 EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
75
76 DES_set_key(deskey, &dat->ks.ks);
77 return 1;
78 }
79
des_cbc_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)80 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
81 size_t in_len) {
82 EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
83
84 DES_ncbc_encrypt(in, out, in_len, &dat->ks.ks, (DES_cblock *)ctx->iv,
85 ctx->encrypt);
86
87 return 1;
88 }
89
90 static const EVP_CIPHER evp_des_cbc = {
91 /* nid = */ NID_des_cbc,
92 /* block_size = */ 8,
93 /* key_len = */ 8,
94 /* iv_len = */ 8,
95 /* ctx_size = */ sizeof(EVP_DES_KEY),
96 /* flags = */ EVP_CIPH_CBC_MODE,
97 /* app_data = */ NULL,
98 /* init = */ des_init_key,
99 /* cipher = */ des_cbc_cipher,
100 /* cleanup = */ NULL,
101 /* ctrl = */ NULL,
102 };
103
EVP_des_cbc(void)104 const EVP_CIPHER *EVP_des_cbc(void) { return &evp_des_cbc; }
105
des_ecb_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)106 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
107 size_t in_len) {
108 if (in_len < ctx->cipher->block_size) {
109 return 1;
110 }
111 in_len -= ctx->cipher->block_size;
112
113 EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
114 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
115 DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
116 &dat->ks.ks, ctx->encrypt);
117 }
118 return 1;
119 }
120
121 static const EVP_CIPHER evp_des_ecb = {
122 /* nid = */ NID_des_ecb,
123 /* block_size = */ 8,
124 /* key_len = */ 8,
125 /* iv_len = */ 0,
126 /* ctx_size = */ sizeof(EVP_DES_KEY),
127 /* flags = */ EVP_CIPH_ECB_MODE,
128 /* app_data = */ NULL,
129 /* init = */ des_init_key,
130 /* cipher = */ des_ecb_cipher,
131 /* cleanup = */ NULL,
132 /* ctrl = */ NULL,
133 };
134
EVP_des_ecb(void)135 const EVP_CIPHER *EVP_des_ecb(void) { return &evp_des_ecb; }
136
137 typedef struct {
138 union {
139 double align;
140 DES_key_schedule ks[3];
141 } ks;
142 } DES_EDE_KEY;
143
des_ede3_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)144 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
145 const uint8_t *iv, int enc) {
146 DES_cblock *deskey = (DES_cblock *)key;
147 DES_EDE_KEY *dat = (DES_EDE_KEY *)ctx->cipher_data;
148
149 DES_set_key(&deskey[0], &dat->ks.ks[0]);
150 DES_set_key(&deskey[1], &dat->ks.ks[1]);
151 DES_set_key(&deskey[2], &dat->ks.ks[2]);
152
153 return 1;
154 }
155
des_ede3_cbc_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)156 static int des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
157 const uint8_t *in, size_t in_len) {
158 DES_EDE_KEY *dat = (DES_EDE_KEY *)ctx->cipher_data;
159
160 DES_ede3_cbc_encrypt(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
161 &dat->ks.ks[2], (DES_cblock *)ctx->iv, ctx->encrypt);
162
163 return 1;
164 }
165
166 static const EVP_CIPHER evp_des_ede3_cbc = {
167 /* nid = */ NID_des_ede3_cbc,
168 /* block_size = */ 8,
169 /* key_len = */ 24,
170 /* iv_len = */ 8,
171 /* ctx_size = */ sizeof(DES_EDE_KEY),
172 /* flags = */ EVP_CIPH_CBC_MODE,
173 /* app_data = */ NULL,
174 /* init = */ des_ede3_init_key,
175 /* cipher = */ des_ede3_cbc_cipher,
176 /* cleanup = */ NULL,
177 /* ctrl = */ NULL,
178 };
179
EVP_des_ede3_cbc(void)180 const EVP_CIPHER *EVP_des_ede3_cbc(void) { return &evp_des_ede3_cbc; }
181
des_ede_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)182 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
183 const uint8_t *iv, int enc) {
184 DES_cblock *deskey = (DES_cblock *)key;
185 DES_EDE_KEY *dat = (DES_EDE_KEY *)ctx->cipher_data;
186
187 DES_set_key(&deskey[0], &dat->ks.ks[0]);
188 DES_set_key(&deskey[1], &dat->ks.ks[1]);
189 DES_set_key(&deskey[0], &dat->ks.ks[2]);
190
191 return 1;
192 }
193
194 static const EVP_CIPHER evp_des_ede_cbc = {
195 /* nid = */ NID_des_ede_cbc,
196 /* block_size = */ 8,
197 /* key_len = */ 16,
198 /* iv_len = */ 8,
199 /* ctx_size = */ sizeof(DES_EDE_KEY),
200 /* flags = */ EVP_CIPH_CBC_MODE,
201 /* app_data = */ NULL,
202 /* init = */ des_ede_init_key,
203 /* cipher = */ des_ede3_cbc_cipher,
204 /* cleanup = */ NULL,
205 /* ctrl = */ NULL,
206 };
207
EVP_des_ede_cbc(void)208 const EVP_CIPHER *EVP_des_ede_cbc(void) { return &evp_des_ede_cbc; }
209
des_ede_ecb_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)210 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
211 const uint8_t *in, size_t in_len) {
212 if (in_len < ctx->cipher->block_size) {
213 return 1;
214 }
215 in_len -= ctx->cipher->block_size;
216
217 DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
218 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
219 DES_ecb3_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
220 &dat->ks.ks[0], &dat->ks.ks[1], &dat->ks.ks[2],
221 ctx->encrypt);
222 }
223 return 1;
224 }
225
226 static const EVP_CIPHER evp_des_ede = {
227 /* nid = */ NID_des_ede_ecb,
228 /* block_size = */ 8,
229 /* key_len = */ 16,
230 /* iv_len = */ 0,
231 /* ctx_size = */ sizeof(DES_EDE_KEY),
232 /* flags = */ EVP_CIPH_ECB_MODE,
233 /* app_data = */ NULL,
234 /* init = */ des_ede_init_key,
235 /* cipher = */ des_ede_ecb_cipher,
236 /* cleanup = */ NULL,
237 /* ctrl = */ NULL,
238 };
239
EVP_des_ede(void)240 const EVP_CIPHER *EVP_des_ede(void) { return &evp_des_ede; }
241
242 static const EVP_CIPHER evp_des_ede3 = {
243 /* nid = */ NID_des_ede3_ecb,
244 /* block_size = */ 8,
245 /* key_len = */ 24,
246 /* iv_len = */ 0,
247 /* ctx_size = */ sizeof(DES_EDE_KEY),
248 /* flags = */ EVP_CIPH_ECB_MODE,
249 /* app_data = */ NULL,
250 /* init = */ des_ede3_init_key,
251 /* cipher = */ des_ede_ecb_cipher,
252 /* cleanup = */ NULL,
253 /* ctrl = */ NULL,
254 };
255
EVP_des_ede3(void)256 const EVP_CIPHER *EVP_des_ede3(void) { return &evp_des_ede3; }
257
EVP_des_ede3_ecb(void)258 const EVP_CIPHER *EVP_des_ede3_ecb(void) { return EVP_des_ede3(); }
259