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 des_cbc = {
91 NID_des_cbc, 8 /* block_size */, 8 /* key_size */,
92 8 /* iv_len */, sizeof(EVP_DES_KEY), EVP_CIPH_CBC_MODE,
93 NULL /* app_data */, des_init_key, des_cbc_cipher,
94 NULL /* cleanup */, NULL /* ctrl */, };
95
EVP_des_cbc(void)96 const EVP_CIPHER *EVP_des_cbc(void) { return &des_cbc; }
97
98
des_ecb_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)99 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
100 size_t in_len) {
101 if (in_len < ctx->cipher->block_size) {
102 return 1;
103 }
104 in_len -= ctx->cipher->block_size;
105
106 EVP_DES_KEY *dat = (EVP_DES_KEY *) ctx->cipher_data;
107 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
108 DES_ecb_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
109 &dat->ks.ks, ctx->encrypt);
110 }
111 return 1;
112 }
113
114 static const EVP_CIPHER des_ecb = {
115 NID_des_ecb, 8 /* block_size */, 8 /* key_size */,
116 0 /* iv_len */, sizeof(EVP_DES_KEY), EVP_CIPH_ECB_MODE,
117 NULL /* app_data */, des_init_key, des_ecb_cipher,
118 NULL /* cleanup */, NULL /* ctrl */, };
119
EVP_des_ecb(void)120 const EVP_CIPHER *EVP_des_ecb(void) { return &des_ecb; }
121
122
123 typedef struct {
124 union {
125 double align;
126 DES_key_schedule ks[3];
127 } ks;
128 } DES_EDE_KEY;
129
130
des_ede3_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)131 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
132 const uint8_t *iv, int enc) {
133 DES_cblock *deskey = (DES_cblock *)key;
134 DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
135
136 DES_set_key(&deskey[0], &dat->ks.ks[0]);
137 DES_set_key(&deskey[1], &dat->ks.ks[1]);
138 DES_set_key(&deskey[2], &dat->ks.ks[2]);
139
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
147 DES_ede3_cbc_encrypt(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
148 &dat->ks.ks[2], (DES_cblock *)ctx->iv, ctx->encrypt);
149
150 return 1;
151 }
152
153 static const EVP_CIPHER des_ede3_cbc = {
154 NID_des_ede3_cbc, 8 /* block_size */, 24 /* key_size */,
155 8 /* iv_len */, sizeof(DES_EDE_KEY), EVP_CIPH_CBC_MODE,
156 NULL /* app_data */, des_ede3_init_key, des_ede3_cbc_cipher,
157 NULL /* cleanup */, NULL /* ctrl */, };
158
EVP_des_ede3_cbc(void)159 const EVP_CIPHER *EVP_des_ede3_cbc(void) { return &des_ede3_cbc; }
160
161
des_ede_init_key(EVP_CIPHER_CTX * ctx,const uint8_t * key,const uint8_t * iv,int enc)162 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
163 const uint8_t *iv, int enc) {
164 DES_cblock *deskey = (DES_cblock *) key;
165 DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
166
167 DES_set_key(&deskey[0], &dat->ks.ks[0]);
168 DES_set_key(&deskey[1], &dat->ks.ks[1]);
169 DES_set_key(&deskey[0], &dat->ks.ks[2]);
170
171 return 1;
172 }
173
174 static const EVP_CIPHER des_ede_cbc = {
175 NID_des_ede_cbc, 8 /* block_size */, 16 /* key_size */,
176 8 /* iv_len */, sizeof(DES_EDE_KEY), EVP_CIPH_CBC_MODE,
177 NULL /* app_data */, des_ede_init_key , des_ede3_cbc_cipher,
178 NULL /* cleanup */, NULL /* ctrl */, };
179
EVP_des_ede_cbc(void)180 const EVP_CIPHER *EVP_des_ede_cbc(void) { return &des_ede_cbc; }
181
182
des_ede_ecb_cipher(EVP_CIPHER_CTX * ctx,uint8_t * out,const uint8_t * in,size_t in_len)183 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
184 const uint8_t *in, size_t in_len) {
185 if (in_len < ctx->cipher->block_size) {
186 return 1;
187 }
188 in_len -= ctx->cipher->block_size;
189
190 DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
191 for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
192 DES_ecb3_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
193 &dat->ks.ks[0], &dat->ks.ks[1], &dat->ks.ks[2],
194 ctx->encrypt);
195 }
196 return 1;
197 }
198
199 static const EVP_CIPHER des_ede_ecb = {
200 NID_des_ede_cbc, 8 /* block_size */, 16 /* key_size */,
201 0 /* iv_len */, sizeof(DES_EDE_KEY), EVP_CIPH_ECB_MODE,
202 NULL /* app_data */, des_ede_init_key , des_ede_ecb_cipher,
203 NULL /* cleanup */, NULL /* ctrl */, };
204
EVP_des_ede(void)205 const EVP_CIPHER *EVP_des_ede(void) { return &des_ede_ecb; }
206