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1/* crypto/evp/e_des.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_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
67 const unsigned char *iv, int enc);
68
69/* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER */
70
71static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
72 const unsigned char *in, unsigned int inl)
73{
74 BLOCK_CIPHER_ecb_loop()
75 des_ecb_encrypt((des_cblock *)(in + i), (des_cblock *)(out + i), ctx->c.des_ks, ctx->encrypt);
76 return 1;
77}
78
79static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
80 const unsigned char *in, unsigned int inl)
81{
82 des_ofb64_encrypt(in, out, (long)inl, ctx->c.des_ks, (des_cblock *)ctx->iv, &ctx->num);
83 return 1;
84}
85
86static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
87 const unsigned char *in, unsigned int inl)
88{
89 des_ncbc_encrypt(in, out, (long)inl, ctx->c.des_ks,
90 (des_cblock *)ctx->iv, ctx->encrypt);
91 return 1;
92}
93
94static int des_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
95 const unsigned char *in, unsigned int inl)
96{
97 des_cfb64_encrypt(in, out, (long)inl, ctx->c.des_ks,
98 (des_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
99 return 1;
100}
101
102BLOCK_CIPHER_defs(des, des_ks, NID_des, 8, 8, 8,
103 0, des_init_key, NULL,
104 EVP_CIPHER_set_asn1_iv,
105 EVP_CIPHER_get_asn1_iv,
106 NULL)
107
108
109static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
110 const unsigned char *iv, int enc)
111 {
112 des_cblock *deskey = (des_cblock *)key;
113
114 des_set_key_unchecked(deskey,ctx->c.des_ks);
115 return 1;
116 }
117
118#endif
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