1 /* crypto/evp/e_des3.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #ifndef OPENSSL_NO_DES
62 #include <openssl/evp.h>
63 #include <openssl/objects.h>
65 #include <openssl/des.h>
66 #include <openssl/rand.h>
70 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
71 const unsigned char *iv,int enc);
73 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
74 const unsigned char *iv,int enc);
76 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
80 DES_key_schedule ks1;/* key schedule */
81 DES_key_schedule ks2;/* key schedule (for ede) */
82 DES_key_schedule ks3;/* key schedule (for ede3) */
85 #define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
87 /* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
89 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
90 const unsigned char *in, size_t inl)
92 BLOCK_CIPHER_ecb_loop()
93 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
94 (DES_cblock *)(out + i),
95 &data(ctx)->ks1, &data(ctx)->ks2,
101 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
102 const unsigned char *in, size_t inl)
104 while (inl>=EVP_MAXCHUNK)
106 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
107 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
108 (DES_cblock *)ctx->iv, &ctx->num);
114 DES_ede3_ofb64_encrypt(in, out, (long)inl,
115 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
116 (DES_cblock *)ctx->iv, &ctx->num);
121 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
122 const unsigned char *in, size_t inl)
127 fprintf(stderr,"des_ede_cbc_cipher(ctx=%p, buflen=%d)\n", ctx, ctx->buf_len);
128 fprintf(stderr,"\t iv= ");
130 fprintf(stderr,"%02X",ctx->iv[i]);
131 fprintf(stderr,"\n");
133 #endif /* KSSL_DEBUG */
134 while (inl>=EVP_MAXCHUNK)
136 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
137 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
138 (DES_cblock *)ctx->iv, ctx->encrypt);
144 DES_ede3_cbc_encrypt(in, out, (long)inl,
145 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
146 (DES_cblock *)ctx->iv, ctx->encrypt);
150 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
151 const unsigned char *in, size_t inl)
153 while (inl>=EVP_MAXCHUNK)
155 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
156 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
157 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
163 DES_ede3_cfb64_encrypt(in, out, (long)inl,
164 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
165 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
169 /* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
170 way, so wrap it here */
171 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
172 const unsigned char *in, size_t inl)
175 unsigned char c[1],d[1];
177 for(n=0 ; n < inl ; ++n)
179 c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
180 DES_ede3_cfb_encrypt(c,d,1,1,
181 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
182 (DES_cblock *)ctx->iv,ctx->encrypt);
183 out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
184 ((d[0]&0x80) >> (unsigned int)(n%8));
190 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
191 const unsigned char *in, size_t inl)
193 while (inl>=EVP_MAXCHUNK)
195 DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
196 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
197 (DES_cblock *)ctx->iv,ctx->encrypt);
203 DES_ede3_cfb_encrypt(in,out,8,(long)inl,
204 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
205 (DES_cblock *)ctx->iv,ctx->encrypt);
209 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
210 EVP_CIPH_RAND_KEY, des_ede_init_key, NULL,
211 EVP_CIPHER_set_asn1_iv,
212 EVP_CIPHER_get_asn1_iv,
215 #define des_ede3_cfb64_cipher des_ede_cfb64_cipher
216 #define des_ede3_ofb_cipher des_ede_ofb_cipher
217 #define des_ede3_cbc_cipher des_ede_cbc_cipher
218 #define des_ede3_ecb_cipher des_ede_ecb_cipher
220 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
221 EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
222 EVP_CIPHER_set_asn1_iv,
223 EVP_CIPHER_get_asn1_iv,
226 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
227 EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
228 EVP_CIPHER_set_asn1_iv,
229 EVP_CIPHER_get_asn1_iv,
232 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
233 EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
234 EVP_CIPHER_set_asn1_iv,
235 EVP_CIPHER_get_asn1_iv,
238 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
239 const unsigned char *iv, int enc)
241 DES_cblock *deskey = (DES_cblock *)key;
242 #ifdef EVP_CHECK_DES_KEY
243 if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
244 !! DES_set_key_checked(&deskey[1],&data(ctx)->ks2))
247 DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
248 DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
250 memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
251 sizeof(data(ctx)->ks1));
255 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
256 const unsigned char *iv, int enc)
258 DES_cblock *deskey = (DES_cblock *)key;
262 fprintf(stderr,"des_ede3_init_key(ctx=%p)\n", ctx);
263 fprintf(stderr,"\tKEY= ");
264 for(i=0;i<24;i++) fprintf(stderr,"%02X",key[i]); fprintf(stderr,"\n");
267 fprintf(stderr,"\t IV= ");
268 for(i=0;i<8;i++) fprintf(stderr,"%02X",iv[i]); fprintf(stderr,"\n");
271 #endif /* KSSL_DEBUG */
273 #ifdef EVP_CHECK_DES_KEY
274 if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
275 || DES_set_key_checked(&deskey[1],&data(ctx)->ks2)
276 || DES_set_key_checked(&deskey[2],&data(ctx)->ks3))
279 DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
280 DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
281 DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
286 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
289 DES_cblock *deskey = ptr;
293 case EVP_CTRL_RAND_KEY:
294 if (RAND_bytes(ptr, c->key_len) <= 0)
296 DES_set_odd_parity(deskey);
297 if (c->key_len >= 16)
298 DES_set_odd_parity(deskey + 1);
299 if (c->key_len >= 24)
300 DES_set_odd_parity(deskey + 2);
308 const EVP_CIPHER *EVP_des_ede(void)
313 const EVP_CIPHER *EVP_des_ede3(void)
315 return &des_ede3_ecb;