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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 OPENSSL_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#include <openssl/des.h>
66
67static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
68 const unsigned char *iv,int enc);
69
70static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
71 const unsigned char *iv,int enc);
72
73typedef struct
74 {
75 DES_key_schedule ks1;/* key schedule */
76 DES_key_schedule ks2;/* key schedule (for ede) */
77 DES_key_schedule ks3;/* key schedule (for ede3) */
78 } DES_EDE_KEY;
79
80#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
81
82/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
83
84static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
85 const unsigned char *in, unsigned int inl)
86{
87 BLOCK_CIPHER_ecb_loop()
88 DES_ecb3_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
89 &data(ctx)->ks1, &data(ctx)->ks2,
90 &data(ctx)->ks3,
91 ctx->encrypt);
92 return 1;
93}
94
95static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
96 const unsigned char *in, unsigned int inl)
97{
98 DES_ede3_ofb64_encrypt(in, out, (long)inl,
99 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
100 (DES_cblock *)ctx->iv, &ctx->num);
101 return 1;
102}
103
104static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
105 const unsigned char *in, unsigned int inl)
106{
107#ifdef KSSL_DEBUG
108 {
109 int i;
110 char *cp;
111 printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
112 printf("\t iv= ");
113 for(i=0;i<8;i++)
114 printf("%02X",ctx->iv[i]);
115 printf("\n");
116 }
117#endif /* KSSL_DEBUG */
118 DES_ede3_cbc_encrypt(in, out, (long)inl,
119 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
120 (DES_cblock *)ctx->iv, ctx->encrypt);
121 return 1;
122}
123
124static int des_ede_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
125 const unsigned char *in, unsigned int inl)
126{
127 DES_ede3_cfb64_encrypt(in, out, (long)inl,
128 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
129 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
130 return 1;
131}
132
133BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
134 0, des_ede_init_key, NULL,
135 EVP_CIPHER_set_asn1_iv,
136 EVP_CIPHER_get_asn1_iv,
137 NULL)
138
139#define des_ede3_cfb_cipher des_ede_cfb_cipher
140#define des_ede3_ofb_cipher des_ede_ofb_cipher
141#define des_ede3_cbc_cipher des_ede_cbc_cipher
142#define des_ede3_ecb_cipher des_ede_ecb_cipher
143
144BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
145 0, des_ede3_init_key, NULL,
146 EVP_CIPHER_set_asn1_iv,
147 EVP_CIPHER_get_asn1_iv,
148 NULL)
149
150static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
151 const unsigned char *iv, int enc)
152 {
153 DES_cblock *deskey = (DES_cblock *)key;
154
155 DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
156 DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
157 memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
158 sizeof(data(ctx)->ks1));
159 return 1;
160 }
161
162static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
163 const unsigned char *iv, int enc)
164 {
165 DES_cblock *deskey = (DES_cblock *)key;
166#ifdef KSSL_DEBUG
167 {
168 int i;
169 printf("des_ede3_init_key(ctx=%lx)\n", ctx);
170 printf("\tKEY= ");
171 for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
172 printf("\t IV= ");
173 for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
174 }
175#endif /* KSSL_DEBUG */
176
177 DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
178 DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
179 DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
180
181 return 1;
182 }
183
184const EVP_CIPHER *EVP_des_ede(void)
185{
186 return &des_ede_ecb;
187}
188
189const EVP_CIPHER *EVP_des_ede3(void)
190{
191 return &des_ede3_ecb;
192}
193#endif
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