2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #ifndef OPENSSL_NO_DES
13 # include <openssl/evp.h>
14 # include <openssl/objects.h>
15 # include "internal/evp_int.h"
16 # include <openssl/des.h>
17 # include <openssl/rand.h>
22 DES_key_schedule ks[3];
25 void (*cbc) (const void *, void *, size_t,
26 const DES_key_schedule *, unsigned char *);
33 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
34 /* ---------^^^ this is not a typo, just a way to detect that
35 * assembler support was in general requested... */
36 # include "sparc_arch.h"
38 extern unsigned int OPENSSL_sparcv9cap_P[];
40 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
42 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
43 void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
44 const DES_key_schedule ks[3], unsigned char iv[8]);
45 void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
46 const DES_key_schedule ks[3], unsigned char iv[8]);
49 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
50 const unsigned char *iv, int enc);
52 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
53 const unsigned char *iv, int enc);
55 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
57 # define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
60 * Because of various casts and different args can't use
61 * IMPLEMENT_BLOCK_CIPHER
64 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
65 const unsigned char *in, size_t inl)
67 BLOCK_CIPHER_ecb_loop()
68 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
69 (DES_cblock *)(out + i),
70 &data(ctx)->ks1, &data(ctx)->ks2,
71 &data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
75 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
76 const unsigned char *in, size_t inl)
78 while (inl >= EVP_MAXCHUNK) {
79 int num = EVP_CIPHER_CTX_num(ctx);
80 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
81 &data(ctx)->ks1, &data(ctx)->ks2,
83 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
85 EVP_CIPHER_CTX_set_num(ctx, num);
91 int num = EVP_CIPHER_CTX_num(ctx);
92 DES_ede3_ofb64_encrypt(in, out, (long)inl,
93 &data(ctx)->ks1, &data(ctx)->ks2,
95 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
97 EVP_CIPHER_CTX_set_num(ctx, num);
102 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
103 const unsigned char *in, size_t inl)
105 DES_EDE_KEY *dat = data(ctx);
107 if (dat->stream.cbc != NULL) {
108 (*dat->stream.cbc) (in, out, inl, dat->ks.ks,
109 EVP_CIPHER_CTX_iv_noconst(ctx));
113 while (inl >= EVP_MAXCHUNK) {
114 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
115 &dat->ks1, &dat->ks2, &dat->ks3,
116 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
117 EVP_CIPHER_CTX_encrypting(ctx));
123 DES_ede3_cbc_encrypt(in, out, (long)inl,
124 &dat->ks1, &dat->ks2, &dat->ks3,
125 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
126 EVP_CIPHER_CTX_encrypting(ctx));
130 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
131 const unsigned char *in, size_t inl)
133 while (inl >= EVP_MAXCHUNK) {
134 int num = EVP_CIPHER_CTX_num(ctx);
135 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
136 &data(ctx)->ks1, &data(ctx)->ks2,
138 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
139 &num, EVP_CIPHER_CTX_encrypting(ctx));
140 EVP_CIPHER_CTX_set_num(ctx, num);
146 int num = EVP_CIPHER_CTX_num(ctx);
147 DES_ede3_cfb64_encrypt(in, out, (long)inl,
148 &data(ctx)->ks1, &data(ctx)->ks2,
150 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
151 &num, EVP_CIPHER_CTX_encrypting(ctx));
152 EVP_CIPHER_CTX_set_num(ctx, num);
158 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
159 * right way, so wrap it here
161 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
162 const unsigned char *in, size_t inl)
165 unsigned char c[1], d[1];
167 if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
169 for (n = 0; n < inl; ++n) {
170 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
171 DES_ede3_cfb_encrypt(c, d, 1, 1,
172 &data(ctx)->ks1, &data(ctx)->ks2,
174 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
175 EVP_CIPHER_CTX_encrypting(ctx));
176 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
177 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
183 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
184 const unsigned char *in, size_t inl)
186 while (inl >= EVP_MAXCHUNK) {
187 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
188 &data(ctx)->ks1, &data(ctx)->ks2,
190 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
191 EVP_CIPHER_CTX_encrypting(ctx));
197 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
198 &data(ctx)->ks1, &data(ctx)->ks2,
200 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
201 EVP_CIPHER_CTX_encrypting(ctx));
205 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
206 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
207 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
208 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
209 # define des_ede3_ofb_cipher des_ede_ofb_cipher
210 # define des_ede3_cbc_cipher des_ede_cbc_cipher
211 # define des_ede3_ecb_cipher des_ede_ecb_cipher
212 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
213 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
214 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
216 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
217 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
218 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
220 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
221 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
222 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
224 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
225 const unsigned char *iv, int enc)
227 DES_cblock *deskey = (DES_cblock *)key;
228 DES_EDE_KEY *dat = data(ctx);
230 dat->stream.cbc = NULL;
231 # if defined(SPARC_DES_CAPABLE)
232 if (SPARC_DES_CAPABLE) {
233 int mode = EVP_CIPHER_CTX_mode(ctx);
235 if (mode == EVP_CIPH_CBC_MODE) {
236 des_t4_key_expand(&deskey[0], &dat->ks1);
237 des_t4_key_expand(&deskey[1], &dat->ks2);
238 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
239 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
240 des_t4_ede3_cbc_decrypt;
245 DES_set_key_unchecked(&deskey[0], &dat->ks1);
246 DES_set_key_unchecked(&deskey[1], &dat->ks2);
247 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
251 static int des_ede3_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 = EVP_CIPHER_CTX_mode(ctx);
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 des_t4_key_expand(&deskey[2], &dat->ks3);
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 DES_set_key_unchecked(&deskey[2], &dat->ks3);
278 static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
281 DES_cblock *deskey = ptr;
284 case EVP_CTRL_RAND_KEY:
285 if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0)
287 DES_set_odd_parity(deskey);
288 if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
289 DES_set_odd_parity(deskey + 1);
290 if (EVP_CIPHER_CTX_key_length(ctx) >= 24)
291 DES_set_odd_parity(deskey + 2);
299 const EVP_CIPHER *EVP_des_ede(void)
304 const EVP_CIPHER *EVP_des_ede3(void)
306 return &des_ede3_ecb;
310 # include <openssl/sha.h>
312 static const unsigned char wrap_iv[8] =
313 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
315 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
316 const unsigned char *in, size_t inl)
318 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
324 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
325 /* Decrypt first block which will end up as icv */
326 des_ede_cbc_cipher(ctx, icv, in, 8);
327 /* Decrypt central blocks */
329 * If decrypting in place move whole output along a block so the next
330 * des_ede_cbc_cipher is in place.
333 memmove(out, out + 8, inl - 8);
336 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
337 /* Decrypt final block which will be IV */
338 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
339 /* Reverse order of everything */
340 BUF_reverse(icv, NULL, 8);
341 BUF_reverse(out, NULL, inl - 16);
342 BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
343 /* Decrypt again using new IV */
344 des_ede_cbc_cipher(ctx, out, out, inl - 16);
345 des_ede_cbc_cipher(ctx, icv, icv, 8);
346 /* Work out SHA1 hash of first portion */
347 SHA1(out, inl - 16, sha1tmp);
349 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
351 OPENSSL_cleanse(icv, 8);
352 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
353 OPENSSL_cleanse(iv, 8);
354 OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
356 OPENSSL_cleanse(out, inl - 16);
361 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
362 const unsigned char *in, size_t inl)
364 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
367 /* Copy input to output buffer + 8 so we have space for IV */
368 memmove(out + 8, in, inl);
370 SHA1(in, inl, sha1tmp);
371 memcpy(out + inl + 8, sha1tmp, 8);
372 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
373 /* Generate random IV */
374 if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0)
376 memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
377 /* Encrypt everything after IV in place */
378 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
379 BUF_reverse(out, NULL, inl + 16);
380 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
381 des_ede_cbc_cipher(ctx, out, out, inl + 16);
385 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
386 const unsigned char *in, size_t inl)
389 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
390 * is more than will ever be needed. Also input length must be a multiple
393 if (inl >= EVP_MAXCHUNK || inl % 8)
395 if (EVP_CIPHER_CTX_encrypting(ctx))
396 return des_ede3_wrap(ctx, out, in, inl);
398 return des_ede3_unwrap(ctx, out, in, inl);
401 static const EVP_CIPHER des3_wrap = {
402 NID_id_smime_alg_CMS3DESwrap,
404 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
405 | EVP_CIPH_FLAG_DEFAULT_ASN1,
406 des_ede3_init_key, des_ede3_wrap_cipher,
409 NULL, NULL, NULL, NULL
412 const EVP_CIPHER *EVP_des_ede3_wrap(void)