1 /* Copyright (C) 1995-1998 Eric Young ([email protected])
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young ([email protected]).
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 ([email protected]).
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 ([email protected])"
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 ([email protected])"
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 "../des/internal.h"
62 #include "../fipsmodule/cipher/internal.h"
63 #include "internal.h"
64
65
66 typedef struct {
67 union {
68 double align;
69 DES_key_schedule ks;
70 } ks;
71 } EVP_DES_KEY;
72
des_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)73 static int des_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
74 const uint8_t *iv, int enc) {
75 EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
76 DES_set_key_ex(key, &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 DES_ncbc_encrypt_ex(in, out, in_len, &dat->ks.ks, ctx->iv, ctx->encrypt);
84 return 1;
85 }
86
87 static const EVP_CIPHER evp_des_cbc = {
88 .nid = NID_des_cbc,
89 .block_size = 8,
90 .key_len = 8,
91 .iv_len = 8,
92 .ctx_size = sizeof(EVP_DES_KEY),
93 .flags = EVP_CIPH_CBC_MODE,
94 .init = des_init_key,
95 .cipher = des_cbc_cipher,
96 };
97
EVP_des_cbc(void)98 const EVP_CIPHER *EVP_des_cbc(void) { return &evp_des_cbc; }
99
des_ecb_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)100 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
101 size_t in_len) {
102 if (in_len < ctx->cipher->block_size) {
103 return 1;
104 }
105 in_len -= ctx->cipher->block_size;
106
107 EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
108 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
109 DES_ecb_encrypt_ex(in + i, out + i, &dat->ks.ks, ctx->encrypt);
110 }
111 return 1;
112 }
113
114 static const EVP_CIPHER evp_des_ecb = {
115 .nid = NID_des_ecb,
116 .block_size = 8,
117 .key_len = 8,
118 .iv_len = 0,
119 .ctx_size = sizeof(EVP_DES_KEY),
120 .flags = EVP_CIPH_ECB_MODE,
121 .init = des_init_key,
122 .cipher = des_ecb_cipher,
123 };
124
EVP_des_ecb(void)125 const EVP_CIPHER *EVP_des_ecb(void) { return &evp_des_ecb; }
126
127 typedef struct {
128 union {
129 double align;
130 DES_key_schedule ks[3];
131 } ks;
132 } DES_EDE_KEY;
133
des_ede3_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)134 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
135 const uint8_t *iv, int enc) {
136 DES_EDE_KEY *dat = (DES_EDE_KEY *)ctx->cipher_data;
137 DES_set_key_ex(key, &dat->ks.ks[0]);
138 DES_set_key_ex(key + 8, &dat->ks.ks[1]);
139 DES_set_key_ex(key + 16, &dat->ks.ks[2]);
140 return 1;
141 }
142
des_ede3_cbc_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)143 static int des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
144 const uint8_t *in, size_t in_len) {
145 DES_EDE_KEY *dat = (DES_EDE_KEY *)ctx->cipher_data;
146 DES_ede3_cbc_encrypt_ex(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
147 &dat->ks.ks[2], ctx->iv, ctx->encrypt);
148 return 1;
149 }
150
151 static const EVP_CIPHER evp_des_ede3_cbc = {
152 .nid = NID_des_ede3_cbc,
153 .block_size = 8,
154 .key_len = 24,
155 .iv_len = 8,
156 .ctx_size = sizeof(DES_EDE_KEY),
157 .flags = EVP_CIPH_CBC_MODE,
158 .init = des_ede3_init_key,
159 .cipher = des_ede3_cbc_cipher,
160 };
161
EVP_des_ede3_cbc(void)162 const EVP_CIPHER *EVP_des_ede3_cbc(void) { return &evp_des_ede3_cbc; }
163
des_ede_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)164 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
165 const uint8_t *iv, int enc) {
166 DES_EDE_KEY *dat = (DES_EDE_KEY *)ctx->cipher_data;
167 // 2-DES is 3-DES with the first key used twice.
168 DES_set_key_ex(key, &dat->ks.ks[0]);
169 DES_set_key_ex(key + 8, &dat->ks.ks[1]);
170 DES_set_key_ex(key, &dat->ks.ks[2]);
171 return 1;
172 }
173
174 static const EVP_CIPHER evp_des_ede_cbc = {
175 .nid = NID_des_ede_cbc,
176 .block_size = 8,
177 .key_len = 16,
178 .iv_len = 8,
179 .ctx_size = sizeof(DES_EDE_KEY),
180 .flags = EVP_CIPH_CBC_MODE,
181 .init = des_ede_init_key,
182 .cipher = des_ede3_cbc_cipher,
183 };
184
EVP_des_ede_cbc(void)185 const EVP_CIPHER *EVP_des_ede_cbc(void) { return &evp_des_ede_cbc; }
186
des_ede_ecb_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)187 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
188 const uint8_t *in, size_t in_len) {
189 if (in_len < ctx->cipher->block_size) {
190 return 1;
191 }
192 in_len -= ctx->cipher->block_size;
193
194 DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
195 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
196 DES_ecb3_encrypt_ex(in + i, out + i, &dat->ks.ks[0], &dat->ks.ks[1],
197 &dat->ks.ks[2], ctx->encrypt);
198 }
199 return 1;
200 }
201
202 static const EVP_CIPHER evp_des_ede = {
203 .nid = NID_des_ede_ecb,
204 .block_size = 8,
205 .key_len = 16,
206 .iv_len = 0,
207 .ctx_size = sizeof(DES_EDE_KEY),
208 .flags = EVP_CIPH_ECB_MODE,
209 .init = des_ede_init_key,
210 .cipher = des_ede_ecb_cipher,
211 };
212
EVP_des_ede(void)213 const EVP_CIPHER *EVP_des_ede(void) { return &evp_des_ede; }
214
215 static const EVP_CIPHER evp_des_ede3 = {
216 .nid = NID_des_ede3_ecb,
217 .block_size = 8,
218 .key_len = 24,
219 .iv_len = 0,
220 .ctx_size = sizeof(DES_EDE_KEY),
221 .flags = EVP_CIPH_ECB_MODE,
222 .init = des_ede3_init_key,
223 .cipher = des_ede_ecb_cipher,
224 };
225
EVP_des_ede3(void)226 const EVP_CIPHER *EVP_des_ede3(void) { return &evp_des_ede3; }
227
EVP_des_ede3_ecb(void)228 const EVP_CIPHER *EVP_des_ede3_ecb(void) { return EVP_des_ede3(); }
229