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, const void *, void *);
80 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
81 /* ---------^^^ this is not a typo, just a way to detect that
82 * assembler support was in general requested... */
83 # include "sparc_arch.h"
85 extern unsigned int OPENSSL_sparcv9cap_P[];
87 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
89 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
90 void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
91 DES_key_schedule *ks, unsigned char iv[8]);
92 void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
93 DES_key_schedule *ks, unsigned char iv[8]);
96 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
97 const unsigned char *iv, int enc);
99 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
100 const unsigned char *iv, int enc);
102 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
104 # define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
107 * Because of various casts and different args can't use
108 * IMPLEMENT_BLOCK_CIPHER
111 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
112 const unsigned char *in, size_t inl)
114 BLOCK_CIPHER_ecb_loop()
115 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
116 (DES_cblock *)(out + i),
117 &data(ctx)->ks1, &data(ctx)->ks2,
118 &data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
122 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
123 const unsigned char *in, size_t inl)
125 while (inl >= EVP_MAXCHUNK) {
126 int num = EVP_CIPHER_CTX_num(ctx);
127 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
128 &data(ctx)->ks1, &data(ctx)->ks2,
130 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
132 EVP_CIPHER_CTX_set_num(ctx, num);
138 int num = EVP_CIPHER_CTX_num(ctx);
139 DES_ede3_ofb64_encrypt(in, out, (long)inl,
140 &data(ctx)->ks1, &data(ctx)->ks2,
142 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
144 EVP_CIPHER_CTX_set_num(ctx, num);
149 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
150 const unsigned char *in, size_t inl)
152 DES_EDE_KEY *dat = data(ctx);
154 if (dat->stream.cbc) {
155 (*dat->stream.cbc) (in, out, inl, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx));
159 while (inl >= EVP_MAXCHUNK) {
160 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
161 &dat->ks1, &dat->ks2, &dat->ks3,
162 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
168 DES_ede3_cbc_encrypt(in, out, (long)inl,
169 &dat->ks1, &dat->ks2, &dat->ks3,
170 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
174 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
175 const unsigned char *in, size_t inl)
177 while (inl >= EVP_MAXCHUNK) {
178 int num = EVP_CIPHER_CTX_num(ctx);
179 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
180 &data(ctx)->ks1, &data(ctx)->ks2,
182 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
183 &num, EVP_CIPHER_CTX_encrypting(ctx));
184 EVP_CIPHER_CTX_set_num(ctx, num);
190 int num = EVP_CIPHER_CTX_num(ctx);
191 DES_ede3_cfb64_encrypt(in, out, (long)inl,
192 &data(ctx)->ks1, &data(ctx)->ks2,
194 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
195 &num, EVP_CIPHER_CTX_encrypting(ctx));
196 EVP_CIPHER_CTX_set_num(ctx, num);
202 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
203 * right way, so wrap it here
205 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
206 const unsigned char *in, size_t inl)
209 unsigned char c[1], d[1];
211 for (n = 0; n < inl; ++n) {
212 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
213 DES_ede3_cfb_encrypt(c, d, 1, 1,
214 &data(ctx)->ks1, &data(ctx)->ks2,
215 &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
216 EVP_CIPHER_CTX_encrypting(ctx));
217 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
218 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
224 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
225 const unsigned char *in, size_t inl)
227 while (inl >= EVP_MAXCHUNK) {
228 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
229 &data(ctx)->ks1, &data(ctx)->ks2,
230 &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
231 EVP_CIPHER_CTX_encrypting(ctx));
237 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
238 &data(ctx)->ks1, &data(ctx)->ks2,
239 &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
240 EVP_CIPHER_CTX_encrypting(ctx));
244 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
245 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
246 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
247 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
248 # define des_ede3_ofb_cipher des_ede_ofb_cipher
249 # define des_ede3_cbc_cipher des_ede_cbc_cipher
250 # define des_ede3_ecb_cipher des_ede_ecb_cipher
251 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
252 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
253 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
255 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
256 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
257 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
259 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
260 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
261 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
263 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
264 const unsigned char *iv, int enc)
266 DES_cblock *deskey = (DES_cblock *)key;
267 DES_EDE_KEY *dat = data(ctx);
269 dat->stream.cbc = NULL;
270 # if defined(SPARC_DES_CAPABLE)
271 if (SPARC_DES_CAPABLE) {
272 int mode = EVP_CIPHER_CTX_mode(ctx);
274 if (mode == EVP_CIPH_CBC_MODE) {
275 des_t4_key_expand(&deskey[0], &dat->ks1);
276 des_t4_key_expand(&deskey[1], &dat->ks2);
277 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
278 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
279 des_t4_ede3_cbc_decrypt;
284 DES_set_key_unchecked(&deskey[0], &dat->ks1);
285 DES_set_key_unchecked(&deskey[1], &dat->ks2);
286 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
290 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
291 const unsigned char *iv, int enc)
293 DES_cblock *deskey = (DES_cblock *)key;
294 DES_EDE_KEY *dat = data(ctx);
296 dat->stream.cbc = NULL;
297 # if defined(SPARC_DES_CAPABLE)
298 if (SPARC_DES_CAPABLE) {
299 int mode = EVP_CIPHER_CTX_mode(ctx);
301 if (mode == EVP_CIPH_CBC_MODE) {
302 des_t4_key_expand(&deskey[0], &dat->ks1);
303 des_t4_key_expand(&deskey[1], &dat->ks2);
304 des_t4_key_expand(&deskey[2], &dat->ks3);
305 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
306 des_t4_ede3_cbc_decrypt;
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);
317 static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
320 DES_cblock *deskey = ptr;
323 case EVP_CTRL_RAND_KEY:
324 if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0)
326 DES_set_odd_parity(deskey);
327 if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
328 DES_set_odd_parity(deskey + 1);
329 if (EVP_CIPHER_CTX_key_length(ctx) >= 24)
330 DES_set_odd_parity(deskey + 2);
338 const EVP_CIPHER *EVP_des_ede(void)
343 const EVP_CIPHER *EVP_des_ede3(void)
345 return &des_ede3_ecb;
349 # include <openssl/sha.h>
351 static const unsigned char wrap_iv[8] =
352 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
354 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
355 const unsigned char *in, size_t inl)
357 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
363 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
364 /* Decrypt first block which will end up as icv */
365 des_ede_cbc_cipher(ctx, icv, in, 8);
366 /* Decrypt central blocks */
368 * If decrypting in place move whole output along a block so the next
369 * des_ede_cbc_cipher is in place.
372 memmove(out, out + 8, inl - 8);
375 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
376 /* Decrypt final block which will be IV */
377 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
378 /* Reverse order of everything */
379 BUF_reverse(icv, NULL, 8);
380 BUF_reverse(out, NULL, inl - 16);
381 BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
382 /* Decrypt again using new IV */
383 des_ede_cbc_cipher(ctx, out, out, inl - 16);
384 des_ede_cbc_cipher(ctx, icv, icv, 8);
385 /* Work out SHA1 hash of first portion */
386 SHA1(out, inl - 16, sha1tmp);
388 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
390 OPENSSL_cleanse(icv, 8);
391 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
392 OPENSSL_cleanse(iv, 8);
393 OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
395 OPENSSL_cleanse(out, inl - 16);
400 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
401 const unsigned char *in, size_t inl)
403 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
406 /* Copy input to output buffer + 8 so we have space for IV */
407 memmove(out + 8, in, inl);
409 SHA1(in, inl, sha1tmp);
410 memcpy(out + inl + 8, sha1tmp, 8);
411 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
412 /* Generate random IV */
413 if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0)
415 memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
416 /* Encrypt everything after IV in place */
417 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
418 BUF_reverse(out, NULL, inl + 16);
419 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
420 des_ede_cbc_cipher(ctx, out, out, inl + 16);
424 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
425 const unsigned char *in, size_t inl)
428 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
429 * is more than will ever be needed. Also input length must be a multiple
432 if (inl >= EVP_MAXCHUNK || inl % 8)
434 if (EVP_CIPHER_CTX_encrypting(ctx))
435 return des_ede3_wrap(ctx, out, in, inl);
437 return des_ede3_unwrap(ctx, out, in, inl);
440 static const EVP_CIPHER des3_wrap = {
441 NID_id_smime_alg_CMS3DESwrap,
443 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
444 | EVP_CIPH_FLAG_DEFAULT_ASN1,
445 des_ede3_init_key, des_ede3_wrap_cipher,
448 NULL, NULL, NULL, NULL
451 const EVP_CIPHER *EVP_des_ede3_wrap(void)