1 /* crypto/evp/e_des3.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #ifndef OPENSSL_NO_DES
62 # include <openssl/evp.h>
63 # include <openssl/objects.h>
64 # include "evp_locl.h"
65 # include <openssl/des.h>
66 # include <openssl/rand.h>
70 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
71 const unsigned char *iv, int enc);
73 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
74 const unsigned char *iv, int enc);
76 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
79 DES_key_schedule ks1; /* key schedule */
80 DES_key_schedule ks2; /* key schedule (for ede) */
81 DES_key_schedule ks3; /* key schedule (for ede3) */
84 # define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
87 * Because of various casts and different args can't use
88 * IMPLEMENT_BLOCK_CIPHER
91 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
92 const unsigned char *in, size_t inl)
94 BLOCK_CIPHER_ecb_loop()
95 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
96 (DES_cblock *)(out + i),
97 &data(ctx)->ks1, &data(ctx)->ks2,
98 &data(ctx)->ks3, ctx->encrypt);
102 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
103 const unsigned char *in, size_t inl)
105 while (inl >= EVP_MAXCHUNK) {
106 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
107 &data(ctx)->ks1, &data(ctx)->ks2,
108 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
115 DES_ede3_ofb64_encrypt(in, out, (long)inl,
116 &data(ctx)->ks1, &data(ctx)->ks2,
117 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
123 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
124 const unsigned char *in, size_t inl)
129 fprintf(stderr, "des_ede_cbc_cipher(ctx=%p, buflen=%d)\n", ctx,
131 fprintf(stderr, "\t iv= ");
132 for (i = 0; i < 8; i++)
133 fprintf(stderr, "%02X", ctx->iv[i]);
134 fprintf(stderr, "\n");
136 # endif /* KSSL_DEBUG */
137 while (inl >= EVP_MAXCHUNK) {
138 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
139 &data(ctx)->ks1, &data(ctx)->ks2,
140 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
147 DES_ede3_cbc_encrypt(in, out, (long)inl,
148 &data(ctx)->ks1, &data(ctx)->ks2,
149 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
154 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
155 const unsigned char *in, size_t inl)
157 while (inl >= EVP_MAXCHUNK) {
158 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
159 &data(ctx)->ks1, &data(ctx)->ks2,
160 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
161 &ctx->num, ctx->encrypt);
167 DES_ede3_cfb64_encrypt(in, out, (long)inl,
168 &data(ctx)->ks1, &data(ctx)->ks2,
169 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
170 &ctx->num, ctx->encrypt);
175 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
176 * right way, so wrap it here
178 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
179 const unsigned char *in, size_t inl)
182 unsigned char c[1], d[1];
184 for (n = 0; n < inl; ++n) {
185 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
186 DES_ede3_cfb_encrypt(c, d, 1, 1,
187 &data(ctx)->ks1, &data(ctx)->ks2,
188 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
190 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
191 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
197 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
198 const unsigned char *in, size_t inl)
200 while (inl >= EVP_MAXCHUNK) {
201 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
202 &data(ctx)->ks1, &data(ctx)->ks2,
203 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
210 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
211 &data(ctx)->ks1, &data(ctx)->ks2,
212 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
217 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
218 EVP_CIPH_RAND_KEY, des_ede_init_key, NULL,
219 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des3_ctrl)
220 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
221 # define des_ede3_ofb_cipher des_ede_ofb_cipher
222 # define des_ede3_cbc_cipher des_ede_cbc_cipher
223 # define des_ede3_ecb_cipher des_ede_ecb_cipher
224 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
225 EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
226 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des3_ctrl)
228 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
229 EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
230 EVP_CIPHER_set_asn1_iv,
231 EVP_CIPHER_get_asn1_iv, des3_ctrl)
233 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
234 EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
235 EVP_CIPHER_set_asn1_iv,
236 EVP_CIPHER_get_asn1_iv, des3_ctrl)
238 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
239 const unsigned char *iv, int enc)
241 DES_cblock *deskey = (DES_cblock *)key;
242 # ifdef EVP_CHECK_DES_KEY
243 if (DES_set_key_checked(&deskey[0], &data(ctx)->ks1)
244 ! !DES_set_key_checked(&deskey[1], &data(ctx)->ks2))
247 DES_set_key_unchecked(&deskey[0], &data(ctx)->ks1);
248 DES_set_key_unchecked(&deskey[1], &data(ctx)->ks2);
250 memcpy(&data(ctx)->ks3, &data(ctx)->ks1, sizeof(data(ctx)->ks1));
254 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
255 const unsigned char *iv, int enc)
257 DES_cblock *deskey = (DES_cblock *)key;
261 fprintf(stderr, "des_ede3_init_key(ctx=%p)\n", ctx);
262 fprintf(stderr, "\tKEY= ");
263 for (i = 0; i < 24; i++)
264 fprintf(stderr, "%02X", key[i]);
265 fprintf(stderr, "\n");
267 fprintf(stderr, "\t IV= ");
268 for (i = 0; i < 8; i++)
269 fprintf(stderr, "%02X", iv[i]);
270 fprintf(stderr, "\n");
273 # endif /* KSSL_DEBUG */
275 # ifdef EVP_CHECK_DES_KEY
276 if (DES_set_key_checked(&deskey[0], &data(ctx)->ks1)
277 || DES_set_key_checked(&deskey[1], &data(ctx)->ks2)
278 || DES_set_key_checked(&deskey[2], &data(ctx)->ks3))
281 DES_set_key_unchecked(&deskey[0], &data(ctx)->ks1);
282 DES_set_key_unchecked(&deskey[1], &data(ctx)->ks2);
283 DES_set_key_unchecked(&deskey[2], &data(ctx)->ks3);
288 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
291 DES_cblock *deskey = ptr;
294 case EVP_CTRL_RAND_KEY:
295 if (RAND_bytes(ptr, c->key_len) <= 0)
297 DES_set_odd_parity(deskey);
298 if (c->key_len >= 16)
299 DES_set_odd_parity(deskey + 1);
300 if (c->key_len >= 24)
301 DES_set_odd_parity(deskey + 2);
309 const EVP_CIPHER *EVP_des_ede(void)
314 const EVP_CIPHER *EVP_des_ede3(void)
316 return &des_ede3_ecb;