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 "internal/evp_int.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) 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) {
156 (*dat->stream.cbc) (in, out, inl, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx));
160 while (inl >= EVP_MAXCHUNK) {
161 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
162 &dat->ks1, &dat->ks2, &dat->ks3,
163 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
169 DES_ede3_cbc_encrypt(in, out, (long)inl,
170 &dat->ks1, &dat->ks2, &dat->ks3,
171 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
175 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
176 const unsigned char *in, size_t inl)
178 while (inl >= EVP_MAXCHUNK) {
179 int num = EVP_CIPHER_CTX_num(ctx);
180 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
181 &data(ctx)->ks1, &data(ctx)->ks2,
183 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
184 &num, EVP_CIPHER_CTX_encrypting(ctx));
185 EVP_CIPHER_CTX_set_num(ctx, num);
191 int num = EVP_CIPHER_CTX_num(ctx);
192 DES_ede3_cfb64_encrypt(in, out, (long)inl,
193 &data(ctx)->ks1, &data(ctx)->ks2,
195 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
196 &num, EVP_CIPHER_CTX_encrypting(ctx));
197 EVP_CIPHER_CTX_set_num(ctx, num);
203 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
204 * right way, so wrap it here
206 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
207 const unsigned char *in, size_t inl)
210 unsigned char c[1], d[1];
212 for (n = 0; n < inl; ++n) {
213 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
214 DES_ede3_cfb_encrypt(c, d, 1, 1,
215 &data(ctx)->ks1, &data(ctx)->ks2,
216 &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
217 EVP_CIPHER_CTX_encrypting(ctx));
218 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
219 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
225 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
226 const unsigned char *in, size_t inl)
228 while (inl >= EVP_MAXCHUNK) {
229 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
230 &data(ctx)->ks1, &data(ctx)->ks2,
231 &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
232 EVP_CIPHER_CTX_encrypting(ctx));
238 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
239 &data(ctx)->ks1, &data(ctx)->ks2,
240 &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
241 EVP_CIPHER_CTX_encrypting(ctx));
245 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
246 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
247 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
248 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
249 # define des_ede3_ofb_cipher des_ede_ofb_cipher
250 # define des_ede3_cbc_cipher des_ede_cbc_cipher
251 # define des_ede3_ecb_cipher des_ede_ecb_cipher
252 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
253 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
254 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
256 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
257 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
258 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
260 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
261 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
262 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
264 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
265 const unsigned char *iv, int enc)
267 DES_cblock *deskey = (DES_cblock *)key;
268 DES_EDE_KEY *dat = data(ctx);
270 dat->stream.cbc = NULL;
271 # if defined(SPARC_DES_CAPABLE)
272 if (SPARC_DES_CAPABLE) {
273 int mode = EVP_CIPHER_CTX_mode(ctx);
275 if (mode == EVP_CIPH_CBC_MODE) {
276 des_t4_key_expand(&deskey[0], &dat->ks1);
277 des_t4_key_expand(&deskey[1], &dat->ks2);
278 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
279 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
280 des_t4_ede3_cbc_decrypt;
285 DES_set_key_unchecked(&deskey[0], &dat->ks1);
286 DES_set_key_unchecked(&deskey[1], &dat->ks2);
287 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
291 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
292 const unsigned char *iv, int enc)
294 DES_cblock *deskey = (DES_cblock *)key;
295 DES_EDE_KEY *dat = data(ctx);
297 dat->stream.cbc = NULL;
298 # if defined(SPARC_DES_CAPABLE)
299 if (SPARC_DES_CAPABLE) {
300 int mode = EVP_CIPHER_CTX_mode(ctx);
302 if (mode == EVP_CIPH_CBC_MODE) {
303 des_t4_key_expand(&deskey[0], &dat->ks1);
304 des_t4_key_expand(&deskey[1], &dat->ks2);
305 des_t4_key_expand(&deskey[2], &dat->ks3);
306 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
307 des_t4_ede3_cbc_decrypt;
312 DES_set_key_unchecked(&deskey[0], &dat->ks1);
313 DES_set_key_unchecked(&deskey[1], &dat->ks2);
314 DES_set_key_unchecked(&deskey[2], &dat->ks3);
318 static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
321 DES_cblock *deskey = ptr;
324 case EVP_CTRL_RAND_KEY:
325 if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0)
327 DES_set_odd_parity(deskey);
328 if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
329 DES_set_odd_parity(deskey + 1);
330 if (EVP_CIPHER_CTX_key_length(ctx) >= 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(EVP_CIPHER_CTX_iv_noconst(ctx), 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(EVP_CIPHER_CTX_iv_noconst(ctx), 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(EVP_CIPHER_CTX_iv_noconst(ctx), 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(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0)
416 memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 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(EVP_CIPHER_CTX_iv_noconst(ctx), 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)
435 if (EVP_CIPHER_CTX_encrypting(ctx))
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)