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>
68 /* Block use of implementations in FIPS mode */
69 #undef EVP_CIPH_FLAG_FIPS
70 #define EVP_CIPH_FLAG_FIPS 0
74 union { double align; DES_key_schedule ks[3]; } ks;
76 void (*cbc)(const void *,void *,size_t,const void *,void *);
83 #if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
84 /* ---------^^^ this is not a typo, just a way to detect that
85 * assembler support was in general requested... */
86 #include "sparc_arch.h"
88 extern unsigned int OPENSSL_sparcv9cap_P[];
90 #define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
92 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
93 void des_t4_ede3_cbc_encrypt(const void *inp,void *out,size_t len,
94 DES_key_schedule *ks,unsigned char iv[8]);
95 void des_t4_ede3_cbc_decrypt(const void *inp,void *out,size_t len,
96 DES_key_schedule *ks,unsigned char iv[8]);
99 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
100 const unsigned char *iv,int enc);
102 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
103 const unsigned char *iv,int enc);
105 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
107 #define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
109 /* Because of various casts and different args can't use 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,
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)
128 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
129 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
130 (DES_cblock *)ctx->iv, &ctx->num);
136 DES_ede3_ofb64_encrypt(in, out, (long)inl,
137 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
138 (DES_cblock *)ctx->iv, &ctx->num);
143 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
144 const unsigned char *in, size_t inl)
146 DES_EDE_KEY *dat = data(ctx);
151 fprintf(stderr,"des_ede_cbc_cipher(ctx=%p, buflen=%d)\n", ctx, ctx->buf_len);
152 fprintf(stderr,"\t iv= ");
154 fprintf(stderr,"%02X",ctx->iv[i]);
155 fprintf(stderr,"\n");
157 #endif /* KSSL_DEBUG */
160 (*dat->stream.cbc)(in,out,inl,&dat->ks,ctx->iv);
164 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)
185 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
186 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
187 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
193 DES_ede3_cfb64_encrypt(in, out, (long)inl,
194 &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
195 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
199 /* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
200 way, so wrap it here */
201 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
202 const unsigned char *in, size_t inl)
205 unsigned char c[1],d[1];
207 for(n=0 ; n < inl ; ++n)
209 c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
210 DES_ede3_cfb_encrypt(c,d,1,1,
211 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
212 (DES_cblock *)ctx->iv,ctx->encrypt);
213 out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
214 ((d[0]&0x80) >> (unsigned int)(n%8));
220 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
221 const unsigned char *in, size_t inl)
223 while (inl>=EVP_MAXCHUNK)
225 DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
226 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
227 (DES_cblock *)ctx->iv,ctx->encrypt);
233 DES_ede3_cfb_encrypt(in,out,8,(long)inl,
234 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
235 (DES_cblock *)ctx->iv,ctx->encrypt);
239 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
240 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
241 des_ede_init_key, NULL, NULL, NULL,
244 #define des_ede3_cfb64_cipher des_ede_cfb64_cipher
245 #define des_ede3_ofb_cipher des_ede_ofb_cipher
246 #define des_ede3_cbc_cipher des_ede_cbc_cipher
247 #define des_ede3_ecb_cipher des_ede_ecb_cipher
249 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
250 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
251 des_ede3_init_key, NULL, NULL, NULL,
254 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
255 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
256 des_ede3_init_key, NULL, NULL, NULL,
259 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
260 EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
261 des_ede3_init_key, NULL, NULL, NULL,
264 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
265 const unsigned char *iv, int enc)
267 DES_cblock *deskey = (DES_cblock *)key;
268 DES_EDE_KEY *dat = data(ctx);
270 dat->stream.cbc = NULL;
271 #if defined(SPARC_DES_CAPABLE)
272 if (SPARC_DES_CAPABLE)
274 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
276 if (mode == EVP_CIPH_CBC_MODE)
278 des_t4_key_expand(&deskey[0],&dat->ks1);
279 des_t4_key_expand(&deskey[1],&dat->ks2);
280 memcpy(&dat->ks3,&dat->ks1,sizeof(dat->ks1));
281 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
282 des_t4_ede3_cbc_decrypt;
287 #ifdef EVP_CHECK_DES_KEY
288 if (DES_set_key_checked(&deskey[0],&dat->ks1)
289 !! DES_set_key_checked(&deskey[1],&dat->ks2))
292 DES_set_key_unchecked(&deskey[0],&dat->ks1);
293 DES_set_key_unchecked(&deskey[1],&dat->ks2);
295 memcpy(&dat->ks3,&dat->ks1,
300 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
301 const unsigned char *iv, int enc)
303 DES_cblock *deskey = (DES_cblock *)key;
304 DES_EDE_KEY *dat = data(ctx);
309 fprintf(stderr,"des_ede3_init_key(ctx=%p)\n", ctx);
310 fprintf(stderr,"\tKEY= ");
311 for(i=0;i<24;i++) fprintf(stderr,"%02X",key[i]); fprintf(stderr,"\n");
314 fprintf(stderr,"\t IV= ");
315 for(i=0;i<8;i++) fprintf(stderr,"%02X",iv[i]); fprintf(stderr,"\n");
318 #endif /* KSSL_DEBUG */
320 dat->stream.cbc = NULL;
321 #if defined(SPARC_DES_CAPABLE)
322 if (SPARC_DES_CAPABLE)
324 int mode = ctx->cipher->flags & EVP_CIPH_MODE;
326 if (mode == EVP_CIPH_CBC_MODE)
328 des_t4_key_expand(&deskey[0],&dat->ks1);
329 des_t4_key_expand(&deskey[1],&dat->ks2);
330 des_t4_key_expand(&deskey[2],&dat->ks3);
331 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
332 des_t4_ede3_cbc_decrypt;
337 #ifdef EVP_CHECK_DES_KEY
338 if (DES_set_key_checked(&deskey[0],&dat->ks1)
339 || DES_set_key_checked(&deskey[1],&dat->ks2)
340 || DES_set_key_checked(&deskey[2],&dat->ks3))
343 DES_set_key_unchecked(&deskey[0],&dat->ks1);
344 DES_set_key_unchecked(&deskey[1],&dat->ks2);
345 DES_set_key_unchecked(&deskey[2],&dat->ks3);
350 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
353 DES_cblock *deskey = ptr;
357 case EVP_CTRL_RAND_KEY:
358 if (RAND_bytes(ptr, c->key_len) <= 0)
360 DES_set_odd_parity(deskey);
361 if (c->key_len >= 16)
362 DES_set_odd_parity(deskey + 1);
363 if (c->key_len >= 24)
364 DES_set_odd_parity(deskey + 2);
372 const EVP_CIPHER *EVP_des_ede(void)
377 const EVP_CIPHER *EVP_des_ede3(void)
379 return &des_ede3_ecb;
382 #ifndef OPENSSL_NO_SHA
384 #include <openssl/sha.h>
386 static const unsigned char wrap_iv[8] = {0x4a,0xdd,0xa2,0x2c,0x79,0xe8,0x21,0x05};
388 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
389 const unsigned char *in, size_t inl)
391 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
397 memcpy(ctx->iv, wrap_iv, 8);
398 /* Decrypt first block which will end up as icv */
399 des_ede_cbc_cipher(ctx, icv, in, 8);
400 /* Decrypt central blocks */
401 /* If decrypting in place move whole output along a block
402 * so the next des_ede_cbc_cipher is in place.
406 memmove(out, out + 8, inl - 8);
409 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
410 /* Decrypt final block which will be IV */
411 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
412 /* Reverse order of everything */
413 BUF_reverse(icv, NULL, 8);
414 BUF_reverse(out, NULL, inl - 16);
415 BUF_reverse(ctx->iv, iv, 8);
416 /* Decrypt again using new IV */
417 des_ede_cbc_cipher(ctx, out, out, inl - 16);
418 des_ede_cbc_cipher(ctx, icv, icv, 8);
419 /* Work out SHA1 hash of first portion */
420 SHA1(out, inl - 16, sha1tmp);
422 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
424 OPENSSL_cleanse(icv, 8);
425 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
426 OPENSSL_cleanse(iv, 8);
427 OPENSSL_cleanse(ctx->iv, 8);
429 OPENSSL_cleanse(out, inl - 16);
434 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
435 const unsigned char *in, size_t inl)
437 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
440 /* Copy input to output buffer + 8 so we have space for IV */
441 memmove(out + 8, in, inl);
443 SHA1(in, inl, sha1tmp);
444 memcpy(out + inl + 8, sha1tmp, 8);
445 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
446 /* Generate random IV */
447 RAND_bytes(ctx->iv, 8);
448 memcpy(out, ctx->iv, 8);
449 /* Encrypt everything after IV in place */
450 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
451 BUF_reverse(out, NULL, inl + 16);
452 memcpy(ctx->iv, wrap_iv, 8);
453 des_ede_cbc_cipher(ctx, out, out, inl + 16);
457 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
458 const unsigned char *in, size_t inl)
460 /* Sanity check input length: we typically only wrap keys
461 * so EVP_MAXCHUNK is more than will ever be needed. Also
462 * input length must be a multiple of 8 bits.
464 if (inl >= EVP_MAXCHUNK || inl % 8)
467 return des_ede3_wrap(ctx, out, in, inl);
469 return des_ede3_unwrap(ctx, out, in, inl);
472 static const EVP_CIPHER des3_wrap = {
473 NID_id_smime_alg_CMS3DESwrap,
475 EVP_CIPH_WRAP_MODE|EVP_CIPH_CUSTOM_IV|EVP_CIPH_FLAG_CUSTOM_CIPHER
476 |EVP_CIPH_FLAG_DEFAULT_ASN1,
477 des_ede3_init_key, des_ede3_wrap_cipher,
480 NULL,NULL,NULL,NULL };
483 const EVP_CIPHER *EVP_des_ede3_wrap(void)