1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
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)"
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
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.]
59 #include "internal/cryptlib.h"
60 #ifndef OPENSSL_NO_DES
61 # include <openssl/evp.h>
62 # include <openssl/objects.h>
63 # include "internal/evp_int.h"
64 # include <openssl/des.h>
65 # include <openssl/rand.h>
70 DES_key_schedule ks
[3];
73 void (*cbc
) (const void *, void *, size_t,
74 const DES_key_schedule
*, unsigned char *);
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 const DES_key_schedule ks
[3], unsigned char iv
[8]);
93 void des_t4_ede3_cbc_decrypt(const void *inp
, void *out
, size_t len
,
94 const DES_key_schedule ks
[3], 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) EVP_C_DATA(DES_EDE_KEY,ctx)
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
, EVP_CIPHER_CTX_encrypting(ctx
));
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 int num
= EVP_CIPHER_CTX_num(ctx
);
128 DES_ede3_ofb64_encrypt(in
, out
, (long)EVP_MAXCHUNK
,
129 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
131 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
133 EVP_CIPHER_CTX_set_num(ctx
, num
);
139 int num
= EVP_CIPHER_CTX_num(ctx
);
140 DES_ede3_ofb64_encrypt(in
, out
, (long)inl
,
141 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
143 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
145 EVP_CIPHER_CTX_set_num(ctx
, num
);
150 static int des_ede_cbc_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
151 const unsigned char *in
, size_t inl
)
153 DES_EDE_KEY
*dat
= data(ctx
);
155 if (dat
->stream
.cbc
!= NULL
) {
156 (*dat
->stream
.cbc
) (in
, out
, inl
, dat
->ks
.ks
,
157 EVP_CIPHER_CTX_iv_noconst(ctx
));
161 while (inl
>= EVP_MAXCHUNK
) {
162 DES_ede3_cbc_encrypt(in
, out
, (long)EVP_MAXCHUNK
,
163 &dat
->ks1
, &dat
->ks2
, &dat
->ks3
,
164 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
165 EVP_CIPHER_CTX_encrypting(ctx
));
171 DES_ede3_cbc_encrypt(in
, out
, (long)inl
,
172 &dat
->ks1
, &dat
->ks2
, &dat
->ks3
,
173 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
174 EVP_CIPHER_CTX_encrypting(ctx
));
178 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
179 const unsigned char *in
, size_t inl
)
181 while (inl
>= EVP_MAXCHUNK
) {
182 int num
= EVP_CIPHER_CTX_num(ctx
);
183 DES_ede3_cfb64_encrypt(in
, out
, (long)EVP_MAXCHUNK
,
184 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
186 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
187 &num
, EVP_CIPHER_CTX_encrypting(ctx
));
188 EVP_CIPHER_CTX_set_num(ctx
, num
);
194 int num
= EVP_CIPHER_CTX_num(ctx
);
195 DES_ede3_cfb64_encrypt(in
, out
, (long)inl
,
196 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
198 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
199 &num
, EVP_CIPHER_CTX_encrypting(ctx
));
200 EVP_CIPHER_CTX_set_num(ctx
, num
);
206 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
207 * right way, so wrap it here
209 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
210 const unsigned char *in
, size_t inl
)
213 unsigned char c
[1], d
[1];
215 for (n
= 0; n
< inl
; ++n
) {
216 c
[0] = (in
[n
/ 8] & (1 << (7 - n
% 8))) ? 0x80 : 0;
217 DES_ede3_cfb_encrypt(c
, d
, 1, 1,
218 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
220 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
221 EVP_CIPHER_CTX_encrypting(ctx
));
222 out
[n
/ 8] = (out
[n
/ 8] & ~(0x80 >> (unsigned int)(n
% 8)))
223 | ((d
[0] & 0x80) >> (unsigned int)(n
% 8));
229 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
230 const unsigned char *in
, size_t inl
)
232 while (inl
>= EVP_MAXCHUNK
) {
233 DES_ede3_cfb_encrypt(in
, out
, 8, (long)EVP_MAXCHUNK
,
234 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
236 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
237 EVP_CIPHER_CTX_encrypting(ctx
));
243 DES_ede3_cfb_encrypt(in
, out
, 8, (long)inl
,
244 &data(ctx
)->ks1
, &data(ctx
)->ks2
,
246 (DES_cblock
*)EVP_CIPHER_CTX_iv_noconst(ctx
),
247 EVP_CIPHER_CTX_encrypting(ctx
));
251 BLOCK_CIPHER_defs(des_ede
, DES_EDE_KEY
, NID_des_ede
, 8, 16, 8, 64,
252 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
253 des_ede_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
254 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
255 # define des_ede3_ofb_cipher des_ede_ofb_cipher
256 # define des_ede3_cbc_cipher des_ede_cbc_cipher
257 # define des_ede3_ecb_cipher des_ede_ecb_cipher
258 BLOCK_CIPHER_defs(des_ede3
, DES_EDE_KEY
, NID_des_ede3
, 8, 24, 8, 64,
259 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
260 des_ede3_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
262 BLOCK_CIPHER_def_cfb(des_ede3
, DES_EDE_KEY
, NID_des_ede3
, 24, 8, 1,
263 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
264 des_ede3_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
266 BLOCK_CIPHER_def_cfb(des_ede3
, DES_EDE_KEY
, NID_des_ede3
, 24, 8, 8,
267 EVP_CIPH_RAND_KEY
| EVP_CIPH_FLAG_DEFAULT_ASN1
,
268 des_ede3_init_key
, NULL
, NULL
, NULL
, des3_ctrl
)
270 static int des_ede_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
271 const unsigned char *iv
, int enc
)
273 DES_cblock
*deskey
= (DES_cblock
*)key
;
274 DES_EDE_KEY
*dat
= data(ctx
);
276 dat
->stream
.cbc
= NULL
;
277 # if defined(SPARC_DES_CAPABLE)
278 if (SPARC_DES_CAPABLE
) {
279 int mode
= EVP_CIPHER_CTX_mode(ctx
);
281 if (mode
== EVP_CIPH_CBC_MODE
) {
282 des_t4_key_expand(&deskey
[0], &dat
->ks1
);
283 des_t4_key_expand(&deskey
[1], &dat
->ks2
);
284 memcpy(&dat
->ks3
, &dat
->ks1
, sizeof(dat
->ks1
));
285 dat
->stream
.cbc
= enc
? des_t4_ede3_cbc_encrypt
:
286 des_t4_ede3_cbc_decrypt
;
291 DES_set_key_unchecked(&deskey
[0], &dat
->ks1
);
292 DES_set_key_unchecked(&deskey
[1], &dat
->ks2
);
293 memcpy(&dat
->ks3
, &dat
->ks1
, sizeof(dat
->ks1
));
297 static int des_ede3_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
298 const unsigned char *iv
, int enc
)
300 DES_cblock
*deskey
= (DES_cblock
*)key
;
301 DES_EDE_KEY
*dat
= data(ctx
);
303 dat
->stream
.cbc
= NULL
;
304 # if defined(SPARC_DES_CAPABLE)
305 if (SPARC_DES_CAPABLE
) {
306 int mode
= EVP_CIPHER_CTX_mode(ctx
);
308 if (mode
== EVP_CIPH_CBC_MODE
) {
309 des_t4_key_expand(&deskey
[0], &dat
->ks1
);
310 des_t4_key_expand(&deskey
[1], &dat
->ks2
);
311 des_t4_key_expand(&deskey
[2], &dat
->ks3
);
312 dat
->stream
.cbc
= enc
? des_t4_ede3_cbc_encrypt
:
313 des_t4_ede3_cbc_decrypt
;
318 DES_set_key_unchecked(&deskey
[0], &dat
->ks1
);
319 DES_set_key_unchecked(&deskey
[1], &dat
->ks2
);
320 DES_set_key_unchecked(&deskey
[2], &dat
->ks3
);
324 static int des3_ctrl(EVP_CIPHER_CTX
*ctx
, int type
, int arg
, void *ptr
)
327 DES_cblock
*deskey
= ptr
;
330 case EVP_CTRL_RAND_KEY
:
331 if (RAND_bytes(ptr
, EVP_CIPHER_CTX_key_length(ctx
)) <= 0)
333 DES_set_odd_parity(deskey
);
334 if (EVP_CIPHER_CTX_key_length(ctx
) >= 16)
335 DES_set_odd_parity(deskey
+ 1);
336 if (EVP_CIPHER_CTX_key_length(ctx
) >= 24)
337 DES_set_odd_parity(deskey
+ 2);
345 const EVP_CIPHER
*EVP_des_ede(void)
350 const EVP_CIPHER
*EVP_des_ede3(void)
352 return &des_ede3_ecb
;
356 # include <openssl/sha.h>
358 static const unsigned char wrap_iv
[8] =
359 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
361 static int des_ede3_unwrap(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
362 const unsigned char *in
, size_t inl
)
364 unsigned char icv
[8], iv
[8], sha1tmp
[SHA_DIGEST_LENGTH
];
370 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx
), wrap_iv
, 8);
371 /* Decrypt first block which will end up as icv */
372 des_ede_cbc_cipher(ctx
, icv
, in
, 8);
373 /* Decrypt central blocks */
375 * If decrypting in place move whole output along a block so the next
376 * des_ede_cbc_cipher is in place.
379 memmove(out
, out
+ 8, inl
- 8);
382 des_ede_cbc_cipher(ctx
, out
, in
+ 8, inl
- 16);
383 /* Decrypt final block which will be IV */
384 des_ede_cbc_cipher(ctx
, iv
, in
+ inl
- 8, 8);
385 /* Reverse order of everything */
386 BUF_reverse(icv
, NULL
, 8);
387 BUF_reverse(out
, NULL
, inl
- 16);
388 BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx
), iv
, 8);
389 /* Decrypt again using new IV */
390 des_ede_cbc_cipher(ctx
, out
, out
, inl
- 16);
391 des_ede_cbc_cipher(ctx
, icv
, icv
, 8);
392 /* Work out SHA1 hash of first portion */
393 SHA1(out
, inl
- 16, sha1tmp
);
395 if (!CRYPTO_memcmp(sha1tmp
, icv
, 8))
397 OPENSSL_cleanse(icv
, 8);
398 OPENSSL_cleanse(sha1tmp
, SHA_DIGEST_LENGTH
);
399 OPENSSL_cleanse(iv
, 8);
400 OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx
), 8);
402 OPENSSL_cleanse(out
, inl
- 16);
407 static int des_ede3_wrap(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
408 const unsigned char *in
, size_t inl
)
410 unsigned char sha1tmp
[SHA_DIGEST_LENGTH
];
413 /* Copy input to output buffer + 8 so we have space for IV */
414 memmove(out
+ 8, in
, inl
);
416 SHA1(in
, inl
, sha1tmp
);
417 memcpy(out
+ inl
+ 8, sha1tmp
, 8);
418 OPENSSL_cleanse(sha1tmp
, SHA_DIGEST_LENGTH
);
419 /* Generate random IV */
420 if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx
), 8) <= 0)
422 memcpy(out
, EVP_CIPHER_CTX_iv_noconst(ctx
), 8);
423 /* Encrypt everything after IV in place */
424 des_ede_cbc_cipher(ctx
, out
+ 8, out
+ 8, inl
+ 8);
425 BUF_reverse(out
, NULL
, inl
+ 16);
426 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx
), wrap_iv
, 8);
427 des_ede_cbc_cipher(ctx
, out
, out
, inl
+ 16);
431 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
432 const unsigned char *in
, size_t inl
)
435 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
436 * is more than will ever be needed. Also input length must be a multiple
439 if (inl
>= EVP_MAXCHUNK
|| inl
% 8)
441 if (EVP_CIPHER_CTX_encrypting(ctx
))
442 return des_ede3_wrap(ctx
, out
, in
, inl
);
444 return des_ede3_unwrap(ctx
, out
, in
, inl
);
447 static const EVP_CIPHER des3_wrap
= {
448 NID_id_smime_alg_CMS3DESwrap
,
450 EVP_CIPH_WRAP_MODE
| EVP_CIPH_CUSTOM_IV
| EVP_CIPH_FLAG_CUSTOM_CIPHER
451 | EVP_CIPH_FLAG_DEFAULT_ASN1
,
452 des_ede3_init_key
, des_ede3_wrap_cipher
,
455 NULL
, NULL
, NULL
, NULL
458 const EVP_CIPHER
*EVP_des_ede3_wrap(void)