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>
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);
152 fprintf(stderr, "des_ede_cbc_cipher(ctx=%p, buflen=%d)\n", ctx,
154 fprintf(stderr, "\t iv= ");
155 for (i = 0; i < 8; i++)
156 fprintf(stderr, "%02X", ctx->iv[i]);
157 fprintf(stderr, "\n");
159 # endif /* KSSL_DEBUG */
160 if (dat->stream.cbc) {
161 (*dat->stream.cbc) (in, out, inl, &dat->ks, ctx->iv);
165 while (inl >= EVP_MAXCHUNK) {
166 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
167 &dat->ks1, &dat->ks2, &dat->ks3,
168 (DES_cblock *)ctx->iv, ctx->encrypt);
174 DES_ede3_cbc_encrypt(in, out, (long)inl,
175 &dat->ks1, &dat->ks2, &dat->ks3,
176 (DES_cblock *)ctx->iv, ctx->encrypt);
180 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
181 const unsigned char *in, size_t inl)
183 while (inl >= EVP_MAXCHUNK) {
184 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
185 &data(ctx)->ks1, &data(ctx)->ks2,
186 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
187 &ctx->num, ctx->encrypt);
193 DES_ede3_cfb64_encrypt(in, out, (long)inl,
194 &data(ctx)->ks1, &data(ctx)->ks2,
195 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
196 &ctx->num, ctx->encrypt);
201 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
202 * right way, so wrap it here
204 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
205 const unsigned char *in, size_t inl)
208 unsigned char c[1], d[1];
210 for (n = 0; n < inl; ++n) {
211 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
212 DES_ede3_cfb_encrypt(c, d, 1, 1,
213 &data(ctx)->ks1, &data(ctx)->ks2,
214 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
216 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
217 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
223 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
224 const unsigned char *in, size_t inl)
226 while (inl >= EVP_MAXCHUNK) {
227 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
228 &data(ctx)->ks1, &data(ctx)->ks2,
229 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
236 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
237 &data(ctx)->ks1, &data(ctx)->ks2,
238 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
243 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
244 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
245 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
246 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
247 # define des_ede3_ofb_cipher des_ede_ofb_cipher
248 # define des_ede3_cbc_cipher des_ede_cbc_cipher
249 # define des_ede3_ecb_cipher des_ede_ecb_cipher
250 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
251 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
252 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
254 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
255 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
256 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
258 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
259 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
260 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
262 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
263 const unsigned char *iv, int enc)
265 DES_cblock *deskey = (DES_cblock *)key;
266 DES_EDE_KEY *dat = data(ctx);
268 dat->stream.cbc = NULL;
269 # if defined(SPARC_DES_CAPABLE)
270 if (SPARC_DES_CAPABLE) {
271 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
273 if (mode == EVP_CIPH_CBC_MODE) {
274 des_t4_key_expand(&deskey[0], &dat->ks1);
275 des_t4_key_expand(&deskey[1], &dat->ks2);
276 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
277 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
278 des_t4_ede3_cbc_decrypt;
283 # ifdef EVP_CHECK_DES_KEY
284 if (DES_set_key_checked(&deskey[0], &dat->ks1)
285 ! !DES_set_key_checked(&deskey[1], &dat->ks2))
288 DES_set_key_unchecked(&deskey[0], &dat->ks1);
289 DES_set_key_unchecked(&deskey[1], &dat->ks2);
291 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
295 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
296 const unsigned char *iv, int enc)
298 DES_cblock *deskey = (DES_cblock *)key;
299 DES_EDE_KEY *dat = data(ctx);
304 fprintf(stderr, "des_ede3_init_key(ctx=%p)\n", ctx);
305 fprintf(stderr, "\tKEY= ");
306 for (i = 0; i < 24; i++)
307 fprintf(stderr, "%02X", key[i]);
308 fprintf(stderr, "\n");
310 fprintf(stderr, "\t IV= ");
311 for (i = 0; i < 8; i++)
312 fprintf(stderr, "%02X", iv[i]);
313 fprintf(stderr, "\n");
316 # endif /* KSSL_DEBUG */
318 dat->stream.cbc = NULL;
319 # if defined(SPARC_DES_CAPABLE)
320 if (SPARC_DES_CAPABLE) {
321 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
323 if (mode == EVP_CIPH_CBC_MODE) {
324 des_t4_key_expand(&deskey[0], &dat->ks1);
325 des_t4_key_expand(&deskey[1], &dat->ks2);
326 des_t4_key_expand(&deskey[2], &dat->ks3);
327 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
328 des_t4_ede3_cbc_decrypt;
333 # ifdef EVP_CHECK_DES_KEY
334 if (DES_set_key_checked(&deskey[0], &dat->ks1)
335 || DES_set_key_checked(&deskey[1], &dat->ks2)
336 || DES_set_key_checked(&deskey[2], &dat->ks3))
339 DES_set_key_unchecked(&deskey[0], &dat->ks1);
340 DES_set_key_unchecked(&deskey[1], &dat->ks2);
341 DES_set_key_unchecked(&deskey[2], &dat->ks3);
346 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
349 DES_cblock *deskey = ptr;
352 case EVP_CTRL_RAND_KEY:
353 if (RAND_bytes(ptr, c->key_len) <= 0)
355 DES_set_odd_parity(deskey);
356 if (c->key_len >= 16)
357 DES_set_odd_parity(deskey + 1);
358 if (c->key_len >= 24)
359 DES_set_odd_parity(deskey + 2);
367 const EVP_CIPHER *EVP_des_ede(void)
372 const EVP_CIPHER *EVP_des_ede3(void)
374 return &des_ede3_ecb;
378 # include <openssl/sha.h>
380 static const unsigned char wrap_iv[8] =
381 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
383 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
384 const unsigned char *in, size_t inl)
386 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
392 memcpy(ctx->iv, wrap_iv, 8);
393 /* Decrypt first block which will end up as icv */
394 des_ede_cbc_cipher(ctx, icv, in, 8);
395 /* Decrypt central blocks */
397 * If decrypting in place move whole output along a block so the next
398 * des_ede_cbc_cipher is in place.
401 memmove(out, out + 8, inl - 8);
404 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
405 /* Decrypt final block which will be IV */
406 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
407 /* Reverse order of everything */
408 BUF_reverse(icv, NULL, 8);
409 BUF_reverse(out, NULL, inl - 16);
410 BUF_reverse(ctx->iv, iv, 8);
411 /* Decrypt again using new IV */
412 des_ede_cbc_cipher(ctx, out, out, inl - 16);
413 des_ede_cbc_cipher(ctx, icv, icv, 8);
414 /* Work out SHA1 hash of first portion */
415 SHA1(out, inl - 16, sha1tmp);
417 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
419 OPENSSL_cleanse(icv, 8);
420 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
421 OPENSSL_cleanse(iv, 8);
422 OPENSSL_cleanse(ctx->iv, 8);
424 OPENSSL_cleanse(out, inl - 16);
429 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
430 const unsigned char *in, size_t inl)
432 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
435 /* Copy input to output buffer + 8 so we have space for IV */
436 memmove(out + 8, in, inl);
438 SHA1(in, inl, sha1tmp);
439 memcpy(out + inl + 8, sha1tmp, 8);
440 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
441 /* Generate random IV */
442 RAND_bytes(ctx->iv, 8);
443 memcpy(out, ctx->iv, 8);
444 /* Encrypt everything after IV in place */
445 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
446 BUF_reverse(out, NULL, inl + 16);
447 memcpy(ctx->iv, wrap_iv, 8);
448 des_ede_cbc_cipher(ctx, out, out, inl + 16);
452 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
453 const unsigned char *in, size_t inl)
456 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
457 * is more than will ever be needed. Also input length must be a multiple
460 if (inl >= EVP_MAXCHUNK || inl % 8)
463 return des_ede3_wrap(ctx, out, in, inl);
465 return des_ede3_unwrap(ctx, out, in, inl);
468 static const EVP_CIPHER des3_wrap = {
469 NID_id_smime_alg_CMS3DESwrap,
471 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
472 | EVP_CIPH_FLAG_DEFAULT_ASN1,
473 des_ede3_init_key, des_ede3_wrap_cipher,
476 NULL, NULL, NULL, NULL
479 const EVP_CIPHER *EVP_des_ede3_wrap(void)