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.]
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>
68 /* Block use of implementations in FIPS mode */
69 # undef EVP_CIPH_FLAG_FIPS
70 # define EVP_CIPH_FLAG_FIPS 0
75 DES_key_schedule ks[3];
78 void (*cbc) (const void *, void *, size_t,
79 const DES_key_schedule *, unsigned char *);
86 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
87 /* ---------^^^ this is not a typo, just a way to detect that
88 * assembler support was in general requested... */
89 # include "sparc_arch.h"
91 extern unsigned int OPENSSL_sparcv9cap_P[];
93 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
95 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
96 void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
97 const DES_key_schedule ks[3], unsigned char iv[8]);
98 void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
99 const DES_key_schedule ks[3], unsigned char iv[8]);
102 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
103 const unsigned char *iv, int enc);
105 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
106 const unsigned char *iv, int enc);
108 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
110 # define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
113 * Because of various casts and different args can't use
114 * IMPLEMENT_BLOCK_CIPHER
117 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
118 const unsigned char *in, size_t inl)
120 BLOCK_CIPHER_ecb_loop()
121 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
122 (DES_cblock *)(out + i),
123 &data(ctx)->ks1, &data(ctx)->ks2,
124 &data(ctx)->ks3, ctx->encrypt);
128 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
129 const unsigned char *in, size_t inl)
131 while (inl >= EVP_MAXCHUNK) {
132 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
133 &data(ctx)->ks1, &data(ctx)->ks2,
134 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
141 DES_ede3_ofb64_encrypt(in, out, (long)inl,
142 &data(ctx)->ks1, &data(ctx)->ks2,
143 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
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);
157 fprintf(stderr, "des_ede_cbc_cipher(ctx=%p, buflen=%d)\n", ctx,
159 fprintf(stderr, "\t iv= ");
160 for (i = 0; i < 8; i++)
161 fprintf(stderr, "%02X", ctx->iv[i]);
162 fprintf(stderr, "\n");
164 # endif /* KSSL_DEBUG */
165 if (dat->stream.cbc) {
166 (*dat->stream.cbc) (in, out, inl, dat->ks.ks, ctx->iv);
170 while (inl >= EVP_MAXCHUNK) {
171 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
172 &dat->ks1, &dat->ks2, &dat->ks3,
173 (DES_cblock *)ctx->iv, ctx->encrypt);
179 DES_ede3_cbc_encrypt(in, out, (long)inl,
180 &dat->ks1, &dat->ks2, &dat->ks3,
181 (DES_cblock *)ctx->iv, ctx->encrypt);
185 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
186 const unsigned char *in, size_t inl)
188 while (inl >= EVP_MAXCHUNK) {
189 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
190 &data(ctx)->ks1, &data(ctx)->ks2,
191 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
192 &ctx->num, ctx->encrypt);
198 DES_ede3_cfb64_encrypt(in, out, (long)inl,
199 &data(ctx)->ks1, &data(ctx)->ks2,
200 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
201 &ctx->num, ctx->encrypt);
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 if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
217 for (n = 0; n < inl; ++n) {
218 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
219 DES_ede3_cfb_encrypt(c, d, 1, 1,
220 &data(ctx)->ks1, &data(ctx)->ks2,
221 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
223 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
224 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
230 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
231 const unsigned char *in, size_t inl)
233 while (inl >= EVP_MAXCHUNK) {
234 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
235 &data(ctx)->ks1, &data(ctx)->ks2,
236 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
243 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
244 &data(ctx)->ks1, &data(ctx)->ks2,
245 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
250 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
251 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
252 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
253 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
254 # define des_ede3_ofb_cipher des_ede_ofb_cipher
255 # define des_ede3_cbc_cipher des_ede_cbc_cipher
256 # define des_ede3_ecb_cipher des_ede_ecb_cipher
257 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
258 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_FIPS |
259 EVP_CIPH_FLAG_DEFAULT_ASN1, des_ede3_init_key, NULL, NULL, NULL,
262 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
263 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_FIPS |
264 EVP_CIPH_FLAG_DEFAULT_ASN1, des_ede3_init_key, NULL, NULL,
267 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
268 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_FIPS |
269 EVP_CIPH_FLAG_DEFAULT_ASN1, des_ede3_init_key, NULL, NULL,
272 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
273 const unsigned char *iv, int enc)
275 DES_cblock *deskey = (DES_cblock *)key;
276 DES_EDE_KEY *dat = data(ctx);
278 dat->stream.cbc = NULL;
279 # if defined(SPARC_DES_CAPABLE)
280 if (SPARC_DES_CAPABLE) {
281 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
283 if (mode == EVP_CIPH_CBC_MODE) {
284 des_t4_key_expand(&deskey[0], &dat->ks1);
285 des_t4_key_expand(&deskey[1], &dat->ks2);
286 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
287 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
288 des_t4_ede3_cbc_decrypt;
293 # ifdef EVP_CHECK_DES_KEY
294 if (DES_set_key_checked(&deskey[0], &dat->ks1)
295 || DES_set_key_checked(&deskey[1], &dat->ks2))
298 DES_set_key_unchecked(&deskey[0], &dat->ks1);
299 DES_set_key_unchecked(&deskey[1], &dat->ks2);
301 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
305 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
306 const unsigned char *iv, int enc)
308 DES_cblock *deskey = (DES_cblock *)key;
309 DES_EDE_KEY *dat = data(ctx);
314 fprintf(stderr, "des_ede3_init_key(ctx=%p)\n", ctx);
315 fprintf(stderr, "\tKEY= ");
316 for (i = 0; i < 24; i++)
317 fprintf(stderr, "%02X", key[i]);
318 fprintf(stderr, "\n");
320 fprintf(stderr, "\t IV= ");
321 for (i = 0; i < 8; i++)
322 fprintf(stderr, "%02X", iv[i]);
323 fprintf(stderr, "\n");
326 # endif /* KSSL_DEBUG */
328 dat->stream.cbc = NULL;
329 # if defined(SPARC_DES_CAPABLE)
330 if (SPARC_DES_CAPABLE) {
331 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
333 if (mode == EVP_CIPH_CBC_MODE) {
334 des_t4_key_expand(&deskey[0], &dat->ks1);
335 des_t4_key_expand(&deskey[1], &dat->ks2);
336 des_t4_key_expand(&deskey[2], &dat->ks3);
337 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
338 des_t4_ede3_cbc_decrypt;
343 # ifdef EVP_CHECK_DES_KEY
344 if (DES_set_key_checked(&deskey[0], &dat->ks1)
345 || DES_set_key_checked(&deskey[1], &dat->ks2)
346 || DES_set_key_checked(&deskey[2], &dat->ks3))
349 DES_set_key_unchecked(&deskey[0], &dat->ks1);
350 DES_set_key_unchecked(&deskey[1], &dat->ks2);
351 DES_set_key_unchecked(&deskey[2], &dat->ks3);
356 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
359 DES_cblock *deskey = ptr;
362 case EVP_CTRL_RAND_KEY:
363 if (RAND_bytes(ptr, c->key_len) <= 0)
365 DES_set_odd_parity(deskey);
366 if (c->key_len >= 16)
367 DES_set_odd_parity(deskey + 1);
368 if (c->key_len >= 24)
369 DES_set_odd_parity(deskey + 2);
377 const EVP_CIPHER *EVP_des_ede(void)
382 const EVP_CIPHER *EVP_des_ede3(void)
384 return &des_ede3_ecb;
387 # ifndef OPENSSL_NO_SHA
389 # include <openssl/sha.h>
391 static const unsigned char wrap_iv[8] =
392 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
394 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
395 const unsigned char *in, size_t inl)
397 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
403 memcpy(ctx->iv, wrap_iv, 8);
404 /* Decrypt first block which will end up as icv */
405 des_ede_cbc_cipher(ctx, icv, in, 8);
406 /* Decrypt central blocks */
408 * If decrypting in place move whole output along a block so the next
409 * des_ede_cbc_cipher is in place.
412 memmove(out, out + 8, inl - 8);
415 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
416 /* Decrypt final block which will be IV */
417 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
418 /* Reverse order of everything */
419 BUF_reverse(icv, NULL, 8);
420 BUF_reverse(out, NULL, inl - 16);
421 BUF_reverse(ctx->iv, iv, 8);
422 /* Decrypt again using new IV */
423 des_ede_cbc_cipher(ctx, out, out, inl - 16);
424 des_ede_cbc_cipher(ctx, icv, icv, 8);
425 /* Work out SHA1 hash of first portion */
426 SHA1(out, inl - 16, sha1tmp);
428 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
430 OPENSSL_cleanse(icv, 8);
431 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
432 OPENSSL_cleanse(iv, 8);
433 OPENSSL_cleanse(ctx->iv, 8);
435 OPENSSL_cleanse(out, inl - 16);
440 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
441 const unsigned char *in, size_t inl)
443 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
446 /* Copy input to output buffer + 8 so we have space for IV */
447 memmove(out + 8, in, inl);
449 SHA1(in, inl, sha1tmp);
450 memcpy(out + inl + 8, sha1tmp, 8);
451 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
452 /* Generate random IV */
453 if (RAND_bytes(ctx->iv, 8) <= 0)
455 memcpy(out, ctx->iv, 8);
456 /* Encrypt everything after IV in place */
457 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
458 BUF_reverse(out, NULL, inl + 16);
459 memcpy(ctx->iv, wrap_iv, 8);
460 des_ede_cbc_cipher(ctx, out, out, inl + 16);
464 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
465 const unsigned char *in, size_t inl)
468 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
469 * is more than will ever be needed. Also input length must be a multiple
472 if (inl >= EVP_MAXCHUNK || inl % 8)
475 return des_ede3_wrap(ctx, out, in, inl);
477 return des_ede3_unwrap(ctx, out, in, inl);
480 static const EVP_CIPHER des3_wrap = {
481 NID_id_smime_alg_CMS3DESwrap,
483 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
484 | EVP_CIPH_FLAG_DEFAULT_ASN1,
485 des_ede3_init_key, des_ede3_wrap_cipher,
488 NULL, NULL, NULL, NULL
491 const EVP_CIPHER *EVP_des_ede3_wrap(void)