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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#include <stdio.h>
60#include "cryptlib.h"
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
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(in + i,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_cfb64_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
133/* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
134 way, so wrap it here */
135static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
136 const unsigned char *in, unsigned int inl)
137 {
138 unsigned int n;
139 unsigned char c[1],d[1];
140
141 for(n=0 ; n < inl ; ++n)
142 {
143 c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
144 DES_ede3_cfb_encrypt(c,d,1,1,
145 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
146 (DES_cblock *)ctx->iv,ctx->encrypt);
147 out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
148 }
149
150 return 1;
151 }
152
153static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
154 const unsigned char *in, unsigned int inl)
155 {
156 DES_ede3_cfb_encrypt(in,out,8,inl,
157 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
158 (DES_cblock *)ctx->iv,ctx->encrypt);
159 return 1;
160 }
161
162BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
163 EVP_CIPH_FLAG_FIPS, des_ede_init_key, NULL,
164 EVP_CIPHER_set_asn1_iv,
165 EVP_CIPHER_get_asn1_iv,
166 NULL)
167
168#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
169#define des_ede3_ofb_cipher des_ede_ofb_cipher
170#define des_ede3_cbc_cipher des_ede_cbc_cipher
171#define des_ede3_ecb_cipher des_ede_ecb_cipher
172
173BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
174 EVP_CIPH_FLAG_FIPS, des_ede3_init_key, NULL,
175 EVP_CIPHER_set_asn1_iv,
176 EVP_CIPHER_get_asn1_iv,
177 NULL)
178
179BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
180 EVP_CIPH_FLAG_FIPS, des_ede3_init_key,NULL,
181 EVP_CIPHER_set_asn1_iv,
182 EVP_CIPHER_get_asn1_iv,NULL)
183
184BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
185 EVP_CIPH_FLAG_FIPS, des_ede3_init_key,NULL,
186 EVP_CIPHER_set_asn1_iv,
187 EVP_CIPHER_get_asn1_iv,NULL)
188
189static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
190 const unsigned char *iv, int enc)
191 {
192 DES_cblock *deskey = (DES_cblock *)key;
193
194 DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
195 DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
196 memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
197 sizeof(data(ctx)->ks1));
198 return 1;
199 }
200
201static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
202 const unsigned char *iv, int enc)
203 {
204 DES_cblock *deskey = (DES_cblock *)key;
205#ifdef KSSL_DEBUG
206 {
207 int i;
208 printf("des_ede3_init_key(ctx=%lx)\n", ctx);
209 printf("\tKEY= ");
210 for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
211 printf("\t IV= ");
212 for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
213 }
214#endif /* KSSL_DEBUG */
215
216 DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
217 DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
218 DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
219
220 return 1;
221 }
222
223const EVP_CIPHER *EVP_des_ede(void)
224{
225 return &des_ede_ecb;
226}
227
228const EVP_CIPHER *EVP_des_ede3(void)
229{
230 return &des_ede3_ecb;
231}
232#endif
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