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>
65 #include <openssl/des.h>
66 #include <openssl/rand.h>
70 union { double align; DES_key_schedule ks[3]; } ks;
72 void (*cbc)(const void *,void *,size_t,const void *,void *);
79 #if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
80 /* ---------^^^ this is not a typo, just a way to detect that
81 * assembler support was in general requested... */
82 #include "sparc_arch.h"
84 extern unsigned int OPENSSL_sparcv9cap_P[];
86 #define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
88 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
89 void des_t4_ede3_cbc_encrypt(const void *inp,void *out,size_t len,
90 DES_key_schedule *ks,unsigned char iv[8]);
91 void des_t4_ede3_cbc_decrypt(const void *inp,void *out,size_t len,
92 DES_key_schedule *ks,unsigned char iv[8]);
95 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
96 const unsigned char *iv,int enc);
98 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
99 const unsigned char *iv,int enc);
101 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
103 #define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
105 /* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
107 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
108 const unsigned char *in, size_t inl)
110 BLOCK_CIPHER_ecb_loop()
111 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
112 (DES_cblock *)(out + i),
113 &data(ctx)->ks1, &data(ctx)->ks2,
119 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
120 const unsigned char *in, size_t inl)
122 if (inl>=EVP_MAXCHUNK)
124 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
125 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
126 (DES_cblock *)ctx->iv, &ctx->num);
132 DES_ede3_ofb64_encrypt(in, out, (long)inl,
133 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
134 (DES_cblock *)ctx->iv, &ctx->num);
139 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
140 const unsigned char *in, size_t inl)
142 DES_EDE_KEY *dat = data(ctx);
148 printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
151 printf("%02X",ctx->iv[i]);
154 #endif /* KSSL_DEBUG */
157 (*dat->stream.cbc)(in,out,inl,&dat->ks,ctx->iv);
161 if (inl>=EVP_MAXCHUNK)
163 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
164 &dat->ks1, &dat->ks2, &dat->ks3,
165 (DES_cblock *)ctx->iv, ctx->encrypt);
171 DES_ede3_cbc_encrypt(in, out, (long)inl,
172 &dat->ks1, &dat->ks2, &dat->ks3,
173 (DES_cblock *)ctx->iv, ctx->encrypt);
177 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
178 const unsigned char *in, size_t inl)
180 if (inl>=EVP_MAXCHUNK)
182 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
183 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
184 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
190 DES_ede3_cfb64_encrypt(in, out, (long)inl,
191 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
192 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
196 /* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
197 way, so wrap it here */
198 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
199 const unsigned char *in, size_t inl)
202 unsigned char c[1],d[1];
204 for(n=0 ; n < inl ; ++n)
206 c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
207 DES_ede3_cfb_encrypt(c,d,1,1,
208 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
209 (DES_cblock *)ctx->iv,ctx->encrypt);
210 out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
211 ((d[0]&0x80) >> (unsigned int)(n%8));
217 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
218 const unsigned char *in, size_t inl)
220 while (inl>=EVP_MAXCHUNK)
222 DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
223 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
224 (DES_cblock *)ctx->iv,ctx->encrypt);
230 DES_ede3_cfb_encrypt(in,out,8,(long)inl,
231 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
232 (DES_cblock *)ctx->iv,ctx->encrypt);
236 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
237 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
238 des_ede_init_key, NULL, NULL, NULL,
241 #define des_ede3_cfb64_cipher des_ede_cfb64_cipher
242 #define des_ede3_ofb_cipher des_ede_ofb_cipher
243 #define des_ede3_cbc_cipher des_ede_cbc_cipher
244 #define des_ede3_ecb_cipher des_ede_ecb_cipher
246 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
247 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
248 des_ede3_init_key, NULL, NULL, NULL,
251 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
252 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
253 des_ede3_init_key, NULL, NULL, NULL,
256 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
257 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
258 des_ede3_init_key, NULL, NULL, NULL,
261 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
262 const unsigned char *iv, int enc)
264 DES_cblock *deskey = (DES_cblock *)key;
265 DES_EDE_KEY *dat = data(ctx);
267 dat->stream.cbc = NULL;
268 #if defined(SPARC_DES_CAPABLE)
269 if (SPARC_DES_CAPABLE)
271 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
273 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 #ifdef EVP_CHECK_DES_KEY
285 if (DES_set_key_checked(&deskey[0],&dat->ks1)
286 !! DES_set_key_checked(&deskey[1],&dat->ks2))
289 DES_set_key_unchecked(&deskey[0],&dat->ks1);
290 DES_set_key_unchecked(&deskey[1],&dat->ks2);
292 memcpy(&dat->ks3,&dat->ks1,
297 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
298 const unsigned char *iv, int enc)
300 DES_cblock *deskey = (DES_cblock *)key;
301 DES_EDE_KEY *dat = data(ctx);
306 printf("des_ede3_init_key(ctx=%lx)\n", ctx);
308 for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
310 for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
312 #endif /* KSSL_DEBUG */
314 dat->stream.cbc = NULL;
315 #if defined(SPARC_DES_CAPABLE)
316 if (SPARC_DES_CAPABLE)
318 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
320 if (mode == EVP_CIPH_CBC_MODE)
322 des_t4_key_expand(&deskey[0],&dat->ks1);
323 des_t4_key_expand(&deskey[1],&dat->ks2);
324 des_t4_key_expand(&deskey[2],&dat->ks3);
325 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
326 des_t4_ede3_cbc_decrypt;
331 #ifdef EVP_CHECK_DES_KEY
332 if (DES_set_key_checked(&deskey[0],&dat->ks1)
333 || DES_set_key_checked(&deskey[1],&dat->ks2)
334 || DES_set_key_checked(&deskey[2],&dat->ks3))
337 DES_set_key_unchecked(&deskey[0],&dat->ks1);
338 DES_set_key_unchecked(&deskey[1],&dat->ks2);
339 DES_set_key_unchecked(&deskey[2],&dat->ks3);
344 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
347 DES_cblock *deskey = ptr;
351 case EVP_CTRL_RAND_KEY:
352 if (RAND_bytes(ptr, c->key_len) <= 0)
354 DES_set_odd_parity(deskey);
355 if (c->key_len >= 16)
356 DES_set_odd_parity(deskey + 1);
357 if (c->key_len >= 24)
358 DES_set_odd_parity(deskey + 2);
366 const EVP_CIPHER *EVP_des_ede(void)
371 const EVP_CIPHER *EVP_des_ede3(void)
373 return &des_ede3_ecb;
376 #ifndef OPENSSL_NO_SHA
378 #include <openssl/sha.h>
380 static const unsigned char wrap_iv[8] = {0x4a,0xdd,0xa2,0x2c,0x79,0xe8,0x21,0x05};
382 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
383 const unsigned char *in, size_t inl)
385 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
391 memcpy(ctx->iv, wrap_iv, 8);
392 /* Decrypt first block which will end up as icv */
393 des_ede_cbc_cipher(ctx, icv, in, 8);
394 /* Decrypt central blocks */
395 /* If decrypting in place move whole output along a block
396 * so the next des_ede_cbc_cipher is in place.
400 memmove(out, out + 8, inl - 8);
403 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
404 /* Decrypt final block which will be IV */
405 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
406 /* Reverse order of everything */
407 BUF_reverse(icv, NULL, 8);
408 BUF_reverse(out, NULL, inl - 16);
409 BUF_reverse(ctx->iv, iv, 8);
410 /* Decrypt again using new IV */
411 des_ede_cbc_cipher(ctx, out, out, inl - 16);
412 des_ede_cbc_cipher(ctx, icv, icv, 8);
413 /* Work out SHA1 hash of first portion */
414 SHA1(out, inl - 16, sha1tmp);
416 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
418 OPENSSL_cleanse(icv, 8);
419 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
420 OPENSSL_cleanse(iv, 8);
421 OPENSSL_cleanse(ctx->iv, 8);
423 OPENSSL_cleanse(out, inl - 16);
428 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
429 const unsigned char *in, size_t inl)
431 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
434 /* Copy input to output buffer + 8 so we have space for IV */
435 memmove(out + 8, in, inl);
437 SHA1(in, inl, sha1tmp);
438 memcpy(out + inl + 8, sha1tmp, 8);
439 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
440 /* Generate random IV */
441 RAND_bytes(ctx->iv, 8);
442 memcpy(out, ctx->iv, 8);
443 /* Encrypt everything after IV in place */
444 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
445 BUF_reverse(out, NULL, inl + 16);
446 memcpy(ctx->iv, wrap_iv, 8);
447 des_ede_cbc_cipher(ctx, out, out, inl + 16);
451 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
452 const unsigned char *in, size_t inl)
454 /* Sanity check input length: we typically only wrap keys
455 * so EVP_MAXCHUNK is more than will ever be needed. Also
456 * input length must be a multiple of 8 bits.
458 if (inl >= EVP_MAXCHUNK || inl % 8)
461 return des_ede3_wrap(ctx, out, in, inl);
463 return des_ede3_unwrap(ctx, out, in, inl);
466 static const EVP_CIPHER des3_wrap = {
467 NID_id_smime_alg_CMS3DESwrap,
469 EVP_CIPH_WRAP_MODE|EVP_CIPH_CUSTOM_IV|EVP_CIPH_FLAG_CUSTOM_CIPHER
470 |EVP_CIPH_FLAG_DEFAULT_ASN1,
471 des_ede3_init_key, des_ede3_wrap_cipher,
474 NULL,NULL,NULL,NULL };
477 const EVP_CIPHER *EVP_des_ede3_wrap(void)