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>
68 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
69 const unsigned char *iv, int enc);
71 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
72 const unsigned char *iv, int enc);
74 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
77 DES_key_schedule ks1; /* key schedule */
78 DES_key_schedule ks2; /* key schedule (for ede) */
79 DES_key_schedule ks3; /* key schedule (for ede3) */
82 # define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
85 * Because of various casts and different args can't use
86 * IMPLEMENT_BLOCK_CIPHER
89 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
90 const unsigned char *in, unsigned int inl)
92 BLOCK_CIPHER_ecb_loop()
93 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
94 (DES_cblock *)(out + i),
95 &data(ctx)->ks1, &data(ctx)->ks2,
96 &data(ctx)->ks3, ctx->encrypt);
100 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
101 const unsigned char *in, unsigned int inl)
103 DES_ede3_ofb64_encrypt(in, out, (long)inl,
104 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
105 (DES_cblock *)ctx->iv, &ctx->num);
109 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
110 const unsigned char *in, unsigned int inl)
115 printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", (unsigned long)ctx,
118 for (i = 0; i < 8; i++)
119 printf("%02X", ctx->iv[i]);
122 # endif /* KSSL_DEBUG */
123 DES_ede3_cbc_encrypt(in, out, (long)inl,
124 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
125 (DES_cblock *)ctx->iv, ctx->encrypt);
129 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
130 const unsigned char *in, unsigned int inl)
132 DES_ede3_cfb64_encrypt(in, out, (long)inl,
133 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
134 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
139 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
140 * right way, so wrap it here
142 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
143 const unsigned char *in, unsigned int inl)
146 unsigned char c[1], d[1];
148 for (n = 0; n < inl; ++n) {
149 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
150 DES_ede3_cfb_encrypt(c, d, 1, 1,
151 &data(ctx)->ks1, &data(ctx)->ks2,
152 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
155 (out[n / 8] & ~(0x80 >> (n % 8))) | ((d[0] & 0x80) >> (n % 8));
161 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
162 const unsigned char *in, unsigned int inl)
164 DES_ede3_cfb_encrypt(in, out, 8, inl,
165 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
166 (DES_cblock *)ctx->iv, ctx->encrypt);
170 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
171 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_FIPS |
172 EVP_CIPH_FLAG_DEFAULT_ASN1, des_ede_init_key, NULL, NULL,
174 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
175 # define des_ede3_ofb_cipher des_ede_ofb_cipher
176 # define des_ede3_cbc_cipher des_ede_cbc_cipher
177 # define des_ede3_ecb_cipher des_ede_ecb_cipher
178 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
179 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_FIPS |
180 EVP_CIPH_FLAG_DEFAULT_ASN1, des_ede3_init_key, NULL, NULL, NULL,
183 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
184 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_FIPS |
185 EVP_CIPH_FLAG_DEFAULT_ASN1, des_ede3_init_key, NULL, NULL,
188 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
189 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_FIPS |
190 EVP_CIPH_FLAG_DEFAULT_ASN1, des_ede3_init_key, NULL, NULL,
193 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
194 const unsigned char *iv, int enc)
196 DES_cblock *deskey = (DES_cblock *)key;
197 # ifdef EVP_CHECK_DES_KEY
198 if (DES_set_key_checked(&deskey[0], &data(ctx)->ks1)
199 || DES_set_key_checked(&deskey[1], &data(ctx)->ks2))
202 DES_set_key_unchecked(&deskey[0], &data(ctx)->ks1);
203 DES_set_key_unchecked(&deskey[1], &data(ctx)->ks2);
205 memcpy(&data(ctx)->ks3, &data(ctx)->ks1, sizeof(data(ctx)->ks1));
209 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
210 const unsigned char *iv, int enc)
212 DES_cblock *deskey = (DES_cblock *)key;
216 printf("des_ede3_init_key(ctx=%lx)\n", (unsigned long)ctx);
218 for (i = 0; i < 24; i++)
219 printf("%02X", key[i]);
222 for (i = 0; i < 8; i++)
223 printf("%02X", iv[i]);
226 # endif /* KSSL_DEBUG */
228 # ifdef EVP_CHECK_DES_KEY
229 if (DES_set_key_checked(&deskey[0], &data(ctx)->ks1)
230 || DES_set_key_checked(&deskey[1], &data(ctx)->ks2)
231 || DES_set_key_checked(&deskey[2], &data(ctx)->ks3))
234 DES_set_key_unchecked(&deskey[0], &data(ctx)->ks1);
235 DES_set_key_unchecked(&deskey[1], &data(ctx)->ks2);
236 DES_set_key_unchecked(&deskey[2], &data(ctx)->ks3);
241 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
244 DES_cblock *deskey = ptr;
247 case EVP_CTRL_RAND_KEY:
248 if (RAND_bytes(ptr, c->key_len) <= 0)
250 DES_set_odd_parity(deskey);
251 if (c->key_len >= 16)
252 DES_set_odd_parity(deskey + 1);
253 if (c->key_len >= 24)
254 DES_set_odd_parity(deskey + 2);
262 const EVP_CIPHER *EVP_des_ede(void)
267 const EVP_CIPHER *EVP_des_ede3(void)
269 return &des_ede3_ecb;