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.]
60 #include "internal/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 # include <openssl/rand.h>
71 DES_key_schedule ks
[3];
74 void (*cbc
) (const void *, void *, size_t, const void *, void *);
81 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
82 /* ---------^^^ this is not a typo, just a way to detect that
83 * assembler support was in general requested... */
84 # include "sparc_arch.h"
86 extern unsigned int OPENSSL_sparcv9cap_P
[];
88 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
90 void des_t4_key_expand(const void *key
, DES_key_schedule
*ks
);
91 void des_t4_ede3_cbc_encrypt(const void *inp
, void *out
, size_t len
,
92 DES_key_schedule
*ks
, unsigned char iv
[8]);
93 void des_t4_ede3_cbc_decrypt(const void *inp
, void *out
, size_t len
,
94 DES_key_schedule
*ks
, unsigned char iv
[8]);
97 static int des_ede_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
98 const unsigned char *iv
, int enc
);
100 static int des_ede3_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
101 const unsigned char *iv
, int enc
);
103 static int des3_ctrl(EVP_CIPHER_CTX
*c
, int type
, int arg
, void *ptr
);
105 # define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
108 * Because of various casts and different args can't use
109 * IMPLEMENT_BLOCK_CIPHER
112 static int des_ede_ecb_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
113 const unsigned char *in
, size_t inl
)
115 BLOCK_CIPHER_ecb_loop()
116 DES_ecb3_encrypt((const_DES_cblock
*)(in
+ i
),
117 (DES_cblock
*)(out
+ i
),
118 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
119 &data(ctx
)->ks3
, ctx
->encrypt
);
123 static int des_ede_ofb_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
124 const unsigned char *in
, size_t inl
)
126 while (inl
>= EVP_MAXCHUNK
) {
127 DES_ede3_ofb64_encrypt(in
, out
, (long)EVP_MAXCHUNK
,
128 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
129 &data(ctx
)->ks3
, (DES_cblock
*)ctx
->iv
,
136 DES_ede3_ofb64_encrypt(in
, out
, (long)inl
,
137 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
138 &data(ctx
)->ks3
, (DES_cblock
*)ctx
->iv
,
144 static int des_ede_cbc_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
145 const unsigned char *in
, size_t inl
)
147 DES_EDE_KEY
*dat
= data(ctx
);
149 if (dat
->stream
.cbc
) {
150 (*dat
->stream
.cbc
) (in
, out
, inl
, &dat
->ks
, ctx
->iv
);
154 while (inl
>= EVP_MAXCHUNK
) {
155 DES_ede3_cbc_encrypt(in
, out
, (long)EVP_MAXCHUNK
,
156 &dat
->ks1
, &dat
->ks2
, &dat
->ks3
,
157 (DES_cblock
*)ctx
->iv
, ctx
->encrypt
);
163 DES_ede3_cbc_encrypt(in
, out
, (long)inl
,
164 &dat
->ks1
, &dat
->ks2
, &dat
->ks3
,
165 (DES_cblock
*)ctx
->iv
, ctx
->encrypt
);
169 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
170 const unsigned char *in
, size_t inl
)
172 while (inl
>= EVP_MAXCHUNK
) {
173 DES_ede3_cfb64_encrypt(in
, out
, (long)EVP_MAXCHUNK
,
174 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
175 &data(ctx
)->ks3
, (DES_cblock
*)ctx
->iv
,
176 &ctx
->num
, ctx
->encrypt
);
182 DES_ede3_cfb64_encrypt(in
, out
, (long)inl
,
183 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
184 &data(ctx
)->ks3
, (DES_cblock
*)ctx
->iv
,
185 &ctx
->num
, ctx
->encrypt
);
190 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
191 * right way, so wrap it here
193 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
194 const unsigned char *in
, size_t inl
)
197 unsigned char c
[1], d
[1];
199 for (n
= 0; n
< inl
; ++n
) {
200 c
[0] = (in
[n
/ 8] & (1 << (7 - n
% 8))) ? 0x80 : 0;
201 DES_ede3_cfb_encrypt(c
, d
, 1, 1,
202 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
203 &data(ctx
)->ks3
, (DES_cblock
*)ctx
->iv
,
205 out
[n
/ 8] = (out
[n
/ 8] & ~(0x80 >> (unsigned int)(n
% 8)))
206 | ((d
[0] & 0x80) >> (unsigned int)(n
% 8));
212 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
213 const unsigned char *in
, size_t inl
)
215 while (inl
>= EVP_MAXCHUNK
) {
216 DES_ede3_cfb_encrypt(in
, out
, 8, (long)EVP_MAXCHUNK
,
217 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
218 &data(ctx
)->ks3
, (DES_cblock
*)ctx
->iv
,
225 DES_ede3_cfb_encrypt(in
, out
, 8, (long)inl
,
226 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
227 &data(ctx
)->ks3
, (DES_cblock
*)ctx
->iv
,
232 BLOCK_CIPHER_defs(des_ede
, DES_EDE_KEY
, NID_des_ede
, 8, 16, 8, 64,
233 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
234 des_ede_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
235 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
236 # define des_ede3_ofb_cipher des_ede_ofb_cipher
237 # define des_ede3_cbc_cipher des_ede_cbc_cipher
238 # define des_ede3_ecb_cipher des_ede_ecb_cipher
239 BLOCK_CIPHER_defs(des_ede3
, DES_EDE_KEY
, NID_des_ede3
, 8, 24, 8, 64,
240 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
241 des_ede3_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
243 BLOCK_CIPHER_def_cfb(des_ede3
, DES_EDE_KEY
, NID_des_ede3
, 24, 8, 1,
244 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
245 des_ede3_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
247 BLOCK_CIPHER_def_cfb(des_ede3
, DES_EDE_KEY
, NID_des_ede3
, 24, 8, 8,
248 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
249 des_ede3_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
251 static int des_ede_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
252 const unsigned char *iv
, int enc
)
254 DES_cblock
*deskey
= (DES_cblock
*)key
;
255 DES_EDE_KEY
*dat
= data(ctx
);
257 dat
->stream
.cbc
= NULL
;
258 # if defined(SPARC_DES_CAPABLE)
259 if (SPARC_DES_CAPABLE
) {
260 int mode
= ctx
->cipher
->flags
& EVP_CIPH_MODE
;
262 if (mode
== EVP_CIPH_CBC_MODE
) {
263 des_t4_key_expand(&deskey
[0], &dat
->ks1
);
264 des_t4_key_expand(&deskey
[1], &dat
->ks2
);
265 memcpy(&dat
->ks3
, &dat
->ks1
, sizeof(dat
->ks1
));
266 dat
->stream
.cbc
= enc
? des_t4_ede3_cbc_encrypt
:
267 des_t4_ede3_cbc_decrypt
;
272 # ifdef EVP_CHECK_DES_KEY
273 if (DES_set_key_checked(&deskey
[0], &dat
->ks1
)
274 ! !DES_set_key_checked(&deskey
[1], &dat
->ks2
))
277 DES_set_key_unchecked(&deskey
[0], &dat
->ks1
);
278 DES_set_key_unchecked(&deskey
[1], &dat
->ks2
);
280 memcpy(&dat
->ks3
, &dat
->ks1
, sizeof(dat
->ks1
));
284 static int des_ede3_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
285 const unsigned char *iv
, int enc
)
287 DES_cblock
*deskey
= (DES_cblock
*)key
;
288 DES_EDE_KEY
*dat
= data(ctx
);
290 dat
->stream
.cbc
= NULL
;
291 # if defined(SPARC_DES_CAPABLE)
292 if (SPARC_DES_CAPABLE
) {
293 int mode
= ctx
->cipher
->flags
& EVP_CIPH_MODE
;
295 if (mode
== EVP_CIPH_CBC_MODE
) {
296 des_t4_key_expand(&deskey
[0], &dat
->ks1
);
297 des_t4_key_expand(&deskey
[1], &dat
->ks2
);
298 des_t4_key_expand(&deskey
[2], &dat
->ks3
);
299 dat
->stream
.cbc
= enc
? des_t4_ede3_cbc_encrypt
:
300 des_t4_ede3_cbc_decrypt
;
305 # ifdef EVP_CHECK_DES_KEY
306 if (DES_set_key_checked(&deskey
[0], &dat
->ks1
)
307 || DES_set_key_checked(&deskey
[1], &dat
->ks2
)
308 || DES_set_key_checked(&deskey
[2], &dat
->ks3
))
311 DES_set_key_unchecked(&deskey
[0], &dat
->ks1
);
312 DES_set_key_unchecked(&deskey
[1], &dat
->ks2
);
313 DES_set_key_unchecked(&deskey
[2], &dat
->ks3
);
318 static int des3_ctrl(EVP_CIPHER_CTX
*c
, int type
, int arg
, void *ptr
)
321 DES_cblock
*deskey
= ptr
;
324 case EVP_CTRL_RAND_KEY
:
325 if (RAND_bytes(ptr
, c
->key_len
) <= 0)
327 DES_set_odd_parity(deskey
);
328 if (c
->key_len
>= 16)
329 DES_set_odd_parity(deskey
+ 1);
330 if (c
->key_len
>= 24)
331 DES_set_odd_parity(deskey
+ 2);
339 const EVP_CIPHER
*EVP_des_ede(void)
344 const EVP_CIPHER
*EVP_des_ede3(void)
346 return &des_ede3_ecb
;
350 # include <openssl/sha.h>
352 static const unsigned char wrap_iv
[8] =
353 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
355 static int des_ede3_unwrap(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
356 const unsigned char *in
, size_t inl
)
358 unsigned char icv
[8], iv
[8], sha1tmp
[SHA_DIGEST_LENGTH
];
364 memcpy(ctx
->iv
, wrap_iv
, 8);
365 /* Decrypt first block which will end up as icv */
366 des_ede_cbc_cipher(ctx
, icv
, in
, 8);
367 /* Decrypt central blocks */
369 * If decrypting in place move whole output along a block so the next
370 * des_ede_cbc_cipher is in place.
373 memmove(out
, out
+ 8, inl
- 8);
376 des_ede_cbc_cipher(ctx
, out
, in
+ 8, inl
- 16);
377 /* Decrypt final block which will be IV */
378 des_ede_cbc_cipher(ctx
, iv
, in
+ inl
- 8, 8);
379 /* Reverse order of everything */
380 BUF_reverse(icv
, NULL
, 8);
381 BUF_reverse(out
, NULL
, inl
- 16);
382 BUF_reverse(ctx
->iv
, iv
, 8);
383 /* Decrypt again using new IV */
384 des_ede_cbc_cipher(ctx
, out
, out
, inl
- 16);
385 des_ede_cbc_cipher(ctx
, icv
, icv
, 8);
386 /* Work out SHA1 hash of first portion */
387 SHA1(out
, inl
- 16, sha1tmp
);
389 if (!CRYPTO_memcmp(sha1tmp
, icv
, 8))
391 OPENSSL_cleanse(icv
, 8);
392 OPENSSL_cleanse(sha1tmp
, SHA_DIGEST_LENGTH
);
393 OPENSSL_cleanse(iv
, 8);
394 OPENSSL_cleanse(ctx
->iv
, 8);
396 OPENSSL_cleanse(out
, inl
- 16);
401 static int des_ede3_wrap(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
402 const unsigned char *in
, size_t inl
)
404 unsigned char sha1tmp
[SHA_DIGEST_LENGTH
];
407 /* Copy input to output buffer + 8 so we have space for IV */
408 memmove(out
+ 8, in
, inl
);
410 SHA1(in
, inl
, sha1tmp
);
411 memcpy(out
+ inl
+ 8, sha1tmp
, 8);
412 OPENSSL_cleanse(sha1tmp
, SHA_DIGEST_LENGTH
);
413 /* Generate random IV */
414 if (RAND_bytes(ctx
->iv
, 8) <= 0)
416 memcpy(out
, ctx
->iv
, 8);
417 /* Encrypt everything after IV in place */
418 des_ede_cbc_cipher(ctx
, out
+ 8, out
+ 8, inl
+ 8);
419 BUF_reverse(out
, NULL
, inl
+ 16);
420 memcpy(ctx
->iv
, wrap_iv
, 8);
421 des_ede_cbc_cipher(ctx
, out
, out
, inl
+ 16);
425 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
426 const unsigned char *in
, size_t inl
)
429 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
430 * is more than will ever be needed. Also input length must be a multiple
433 if (inl
>= EVP_MAXCHUNK
|| inl
% 8)
436 return des_ede3_wrap(ctx
, out
, in
, inl
);
438 return des_ede3_unwrap(ctx
, out
, in
, inl
);
441 static const EVP_CIPHER des3_wrap
= {
442 NID_id_smime_alg_CMS3DESwrap
,
444 EVP_CIPH_WRAP_MODE
| EVP_CIPH_CUSTOM_IV
| EVP_CIPH_FLAG_CUSTOM_CIPHER
445 | EVP_CIPH_FLAG_DEFAULT_ASN1
,
446 des_ede3_init_key
, des_ede3_wrap_cipher
,
449 NULL
, NULL
, NULL
, NULL
452 const EVP_CIPHER
*EVP_des_ede3_wrap(void)