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authorcvs2svn <admin@example.com>2001-10-01 21:58:54 +0000
committercvs2svn <admin@example.com>2001-10-01 21:58:54 +0000
commit2b482d950b0e856294fcd4c1068c1b21939a7240 (patch)
treeaa05f6be64877f76547f1b54ad84f7bfcb291f5d /src/lib/libcrypto/evp/e_des3.c
parentd7b0aad33e28dafbbef67eb5b84ecb05a844fc88 (diff)
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1/* crypto/evp/e_des3.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59#ifndef NO_DES
60#include <stdio.h>
61#include "cryptlib.h"
62#include <openssl/evp.h>
63#include <openssl/objects.h>
64#include "evp_locl.h"
65
66static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
67 const unsigned char *iv,int enc);
68
69static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
70 const unsigned char *iv,int enc);
71
72/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
73
74static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
75 const unsigned char *in, unsigned int inl)
76{
77 BLOCK_CIPHER_ecb_loop()
78 des_ecb3_encrypt((des_cblock *)(in + i), (des_cblock *)(out + i),
79 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
80 ctx->encrypt);
81 return 1;
82}
83
84static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
85 const unsigned char *in, unsigned int inl)
86{
87 des_ede3_ofb64_encrypt(in, out, (long)inl,
88 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
89 (des_cblock *)ctx->iv, &ctx->num);
90 return 1;
91}
92
93static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
94 const unsigned char *in, unsigned int inl)
95{
96 des_ede3_cbc_encrypt(in, out, (long)inl,
97 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
98 (des_cblock *)ctx->iv, ctx->encrypt);
99 return 1;
100}
101
102static int des_ede_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
103 const unsigned char *in, unsigned int inl)
104{
105 des_ede3_cfb64_encrypt(in, out, (long)inl,
106 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
107 (des_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
108 return 1;
109}
110
111#define NID_des_ede_ecb NID_des_ede
112
113BLOCK_CIPHER_defs(des_ede, des_ede, NID_des_ede, 8, 16, 8,
114 0, des_ede_init_key, NULL,
115 EVP_CIPHER_set_asn1_iv,
116 EVP_CIPHER_get_asn1_iv,
117 NULL)
118
119#define NID_des_ede3_ecb NID_des_ede3
120#define des_ede3_cfb_cipher des_ede_cfb_cipher
121#define des_ede3_ofb_cipher des_ede_ofb_cipher
122#define des_ede3_cbc_cipher des_ede_cbc_cipher
123#define des_ede3_ecb_cipher des_ede_ecb_cipher
124
125BLOCK_CIPHER_defs(des_ede3, des_ede, NID_des_ede3, 8, 24, 8,
126 0, des_ede3_init_key, NULL,
127 EVP_CIPHER_set_asn1_iv,
128 EVP_CIPHER_get_asn1_iv,
129 NULL)
130
131static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
132 const unsigned char *iv, int enc)
133 {
134 des_cblock *deskey = (des_cblock *)key;
135
136 des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1);
137 des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
138 memcpy( (char *)ctx->c.des_ede.ks3,
139 (char *)ctx->c.des_ede.ks1,
140 sizeof(ctx->c.des_ede.ks1));
141 return 1;
142 }
143
144static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
145 const unsigned char *iv, int enc)
146 {
147 des_cblock *deskey = (des_cblock *)key;
148
149 des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1);
150 des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
151 des_set_key_unchecked(&deskey[2],ctx->c.des_ede.ks3);
152
153 return 1;
154 }
155
156EVP_CIPHER *EVP_des_ede(void)
157{
158 return &des_ede_ecb;
159}
160
161EVP_CIPHER *EVP_des_ede3(void)
162{
163 return &des_ede3_ecb;
164}
165#endif
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