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/obj.h>
60
61#include "internal.h"
62
63
64typedef struct {
65  union {
66    double align;
67    DES_key_schedule ks;
68  } ks;
69} EVP_DES_KEY;
70
71static 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
80static 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
90static 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
96const EVP_CIPHER *EVP_des_cbc(void) { return &des_cbc; }
97
98
99typedef struct {
100  union {
101    double align;
102    DES_key_schedule ks[3];
103  } ks;
104} DES_EDE_KEY;
105
106
107static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
108                             const uint8_t *iv, int enc) {
109  DES_cblock *deskey = (DES_cblock *)key;
110  DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
111
112  DES_set_key(&deskey[0], &dat->ks.ks[0]);
113  DES_set_key(&deskey[1], &dat->ks.ks[1]);
114  DES_set_key(&deskey[2], &dat->ks.ks[2]);
115
116  return 1;
117}
118
119static int des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
120                              const uint8_t *in, size_t in_len) {
121  DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
122
123  DES_ede3_cbc_encrypt(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
124                       &dat->ks.ks[2], (DES_cblock *)ctx->iv, ctx->encrypt);
125
126  return 1;
127}
128
129static const EVP_CIPHER des3_cbc = {
130    NID_des_cbc,         8 /* block_size */,  24 /* key_size */,
131    8 /* iv_len */,      sizeof(DES_EDE_KEY), EVP_CIPH_CBC_MODE,
132    NULL /* app_data */, des_ede3_init_key,   des_ede3_cbc_cipher,
133    NULL /* cleanup */,  NULL /* ctrl */, };
134
135const EVP_CIPHER *EVP_des_ede3_cbc(void) { return &des3_cbc; }
136