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 DES_set_key_unchecked(&deskey[0], &dat->ks1);
273 DES_set_key_unchecked(&deskey[1], &dat->ks2);
274 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
278 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
279 const unsigned char *iv, int enc)
281 DES_cblock *deskey = (DES_cblock *)key;
282 DES_EDE_KEY *dat = data(ctx);
284 dat->stream.cbc = NULL;
285 # if defined(SPARC_DES_CAPABLE)
286 if (SPARC_DES_CAPABLE) {
287 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
289 if (mode == EVP_CIPH_CBC_MODE) {
290 des_t4_key_expand(&deskey[0], &dat->ks1);
291 des_t4_key_expand(&deskey[1], &dat->ks2);
292 des_t4_key_expand(&deskey[2], &dat->ks3);
293 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
294 des_t4_ede3_cbc_decrypt;
299 DES_set_key_unchecked(&deskey[0], &dat->ks1);
300 DES_set_key_unchecked(&deskey[1], &dat->ks2);
301 DES_set_key_unchecked(&deskey[2], &dat->ks3);
305 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
308 DES_cblock *deskey = ptr;
311 case EVP_CTRL_RAND_KEY:
312 if (RAND_bytes(ptr, c->key_len) <= 0)
314 DES_set_odd_parity(deskey);
315 if (c->key_len >= 16)
316 DES_set_odd_parity(deskey + 1);
317 if (c->key_len >= 24)
318 DES_set_odd_parity(deskey + 2);
326 const EVP_CIPHER *EVP_des_ede(void)
331 const EVP_CIPHER *EVP_des_ede3(void)
333 return &des_ede3_ecb;
337 # include <openssl/sha.h>
339 static const unsigned char wrap_iv[8] =
340 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
342 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
343 const unsigned char *in, size_t inl)
345 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
351 memcpy(ctx->iv, wrap_iv, 8);
352 /* Decrypt first block which will end up as icv */
353 des_ede_cbc_cipher(ctx, icv, in, 8);
354 /* Decrypt central blocks */
356 * If decrypting in place move whole output along a block so the next
357 * des_ede_cbc_cipher is in place.
360 memmove(out, out + 8, inl - 8);
363 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
364 /* Decrypt final block which will be IV */
365 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
366 /* Reverse order of everything */
367 BUF_reverse(icv, NULL, 8);
368 BUF_reverse(out, NULL, inl - 16);
369 BUF_reverse(ctx->iv, iv, 8);
370 /* Decrypt again using new IV */
371 des_ede_cbc_cipher(ctx, out, out, inl - 16);
372 des_ede_cbc_cipher(ctx, icv, icv, 8);
373 /* Work out SHA1 hash of first portion */
374 SHA1(out, inl - 16, sha1tmp);
376 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
378 OPENSSL_cleanse(icv, 8);
379 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
380 OPENSSL_cleanse(iv, 8);
381 OPENSSL_cleanse(ctx->iv, 8);
383 OPENSSL_cleanse(out, inl - 16);
388 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
389 const unsigned char *in, size_t inl)
391 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
394 /* Copy input to output buffer + 8 so we have space for IV */
395 memmove(out + 8, in, inl);
397 SHA1(in, inl, sha1tmp);
398 memcpy(out + inl + 8, sha1tmp, 8);
399 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
400 /* Generate random IV */
401 if (RAND_bytes(ctx->iv, 8) <= 0)
403 memcpy(out, ctx->iv, 8);
404 /* Encrypt everything after IV in place */
405 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
406 BUF_reverse(out, NULL, inl + 16);
407 memcpy(ctx->iv, wrap_iv, 8);
408 des_ede_cbc_cipher(ctx, out, out, inl + 16);
412 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
413 const unsigned char *in, size_t inl)
416 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
417 * is more than will ever be needed. Also input length must be a multiple
420 if (inl >= EVP_MAXCHUNK || inl % 8)
423 return des_ede3_wrap(ctx, out, in, inl);
425 return des_ede3_unwrap(ctx, out, in, inl);
428 static const EVP_CIPHER des3_wrap = {
429 NID_id_smime_alg_CMS3DESwrap,
431 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
432 | EVP_CIPH_FLAG_DEFAULT_ASN1,
433 des_ede3_init_key, des_ede3_wrap_cipher,
436 NULL, NULL, NULL, NULL
439 const EVP_CIPHER *EVP_des_ede3_wrap(void)