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>
18 # include <openssl/rand_drbg.h>
19 # include "evp_locl.h"
24 DES_key_schedule ks[3];
27 void (*cbc) (const void *, void *, size_t,
28 const DES_key_schedule *, unsigned char *);
35 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
36 /* ---------^^^ this is not a typo, just a way to detect that
37 * assembler support was in general requested... */
38 # include "sparc_arch.h"
40 extern unsigned int OPENSSL_sparcv9cap_P[];
42 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
44 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
45 void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
46 const DES_key_schedule ks[3], unsigned char iv[8]);
47 void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
48 const DES_key_schedule ks[3], unsigned char iv[8]);
51 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
52 const unsigned char *iv, int enc);
54 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
55 const unsigned char *iv, int enc);
57 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
59 # define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
62 * Because of various casts and different args can't use
63 * IMPLEMENT_BLOCK_CIPHER
66 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
67 const unsigned char *in, size_t inl)
69 BLOCK_CIPHER_ecb_loop()
70 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
71 (DES_cblock *)(out + i),
72 &data(ctx)->ks1, &data(ctx)->ks2,
73 &data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
77 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
78 const unsigned char *in, size_t inl)
80 while (inl >= EVP_MAXCHUNK) {
81 int num = EVP_CIPHER_CTX_num(ctx);
82 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
83 &data(ctx)->ks1, &data(ctx)->ks2,
85 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
87 EVP_CIPHER_CTX_set_num(ctx, num);
93 int num = EVP_CIPHER_CTX_num(ctx);
94 DES_ede3_ofb64_encrypt(in, out, (long)inl,
95 &data(ctx)->ks1, &data(ctx)->ks2,
97 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
99 EVP_CIPHER_CTX_set_num(ctx, num);
104 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
105 const unsigned char *in, size_t inl)
107 DES_EDE_KEY *dat = data(ctx);
109 if (dat->stream.cbc != NULL) {
110 (*dat->stream.cbc) (in, out, inl, dat->ks.ks,
111 EVP_CIPHER_CTX_iv_noconst(ctx));
115 while (inl >= EVP_MAXCHUNK) {
116 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
117 &dat->ks1, &dat->ks2, &dat->ks3,
118 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
119 EVP_CIPHER_CTX_encrypting(ctx));
125 DES_ede3_cbc_encrypt(in, out, (long)inl,
126 &dat->ks1, &dat->ks2, &dat->ks3,
127 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
128 EVP_CIPHER_CTX_encrypting(ctx));
132 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
133 const unsigned char *in, size_t inl)
135 while (inl >= EVP_MAXCHUNK) {
136 int num = EVP_CIPHER_CTX_num(ctx);
137 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
138 &data(ctx)->ks1, &data(ctx)->ks2,
140 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
141 &num, EVP_CIPHER_CTX_encrypting(ctx));
142 EVP_CIPHER_CTX_set_num(ctx, num);
148 int num = EVP_CIPHER_CTX_num(ctx);
149 DES_ede3_cfb64_encrypt(in, out, (long)inl,
150 &data(ctx)->ks1, &data(ctx)->ks2,
152 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
153 &num, EVP_CIPHER_CTX_encrypting(ctx));
154 EVP_CIPHER_CTX_set_num(ctx, num);
160 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
161 * right way, so wrap it here
163 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
164 const unsigned char *in, size_t inl)
167 unsigned char c[1], d[1];
169 if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
171 for (n = 0; n < inl; ++n) {
172 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
173 DES_ede3_cfb_encrypt(c, d, 1, 1,
174 &data(ctx)->ks1, &data(ctx)->ks2,
176 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
177 EVP_CIPHER_CTX_encrypting(ctx));
178 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
179 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
185 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
186 const unsigned char *in, size_t inl)
188 while (inl >= EVP_MAXCHUNK) {
189 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
190 &data(ctx)->ks1, &data(ctx)->ks2,
192 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
193 EVP_CIPHER_CTX_encrypting(ctx));
199 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
200 &data(ctx)->ks1, &data(ctx)->ks2,
202 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
203 EVP_CIPHER_CTX_encrypting(ctx));
207 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
208 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
209 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
210 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
211 # define des_ede3_ofb_cipher des_ede_ofb_cipher
212 # define des_ede3_cbc_cipher des_ede_cbc_cipher
213 # define des_ede3_ecb_cipher des_ede_ecb_cipher
214 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
215 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
216 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
218 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
219 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
220 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
222 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
223 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
224 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
226 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
227 const unsigned char *iv, int enc)
229 DES_cblock *deskey = (DES_cblock *)key;
230 DES_EDE_KEY *dat = data(ctx);
232 dat->stream.cbc = NULL;
233 # if defined(SPARC_DES_CAPABLE)
234 if (SPARC_DES_CAPABLE) {
235 int mode = EVP_CIPHER_CTX_mode(ctx);
237 if (mode == EVP_CIPH_CBC_MODE) {
238 des_t4_key_expand(&deskey[0], &dat->ks1);
239 des_t4_key_expand(&deskey[1], &dat->ks2);
240 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
241 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
242 des_t4_ede3_cbc_decrypt;
247 DES_set_key_unchecked(&deskey[0], &dat->ks1);
248 DES_set_key_unchecked(&deskey[1], &dat->ks2);
249 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
253 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
254 const unsigned char *iv, int enc)
256 DES_cblock *deskey = (DES_cblock *)key;
257 DES_EDE_KEY *dat = data(ctx);
259 dat->stream.cbc = NULL;
260 # if defined(SPARC_DES_CAPABLE)
261 if (SPARC_DES_CAPABLE) {
262 int mode = EVP_CIPHER_CTX_mode(ctx);
264 if (mode == EVP_CIPH_CBC_MODE) {
265 des_t4_key_expand(&deskey[0], &dat->ks1);
266 des_t4_key_expand(&deskey[1], &dat->ks2);
267 des_t4_key_expand(&deskey[2], &dat->ks3);
268 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
269 des_t4_ede3_cbc_decrypt;
274 DES_set_key_unchecked(&deskey[0], &dat->ks1);
275 DES_set_key_unchecked(&deskey[1], &dat->ks2);
276 DES_set_key_unchecked(&deskey[2], &dat->ks3);
280 static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
283 DES_cblock *deskey = ptr;
286 case EVP_CTRL_RAND_KEY:
287 if (ctx->drbg != NULL) {
288 if (RAND_DRBG_bytes(ctx->drbg, ptr, EVP_CIPHER_CTX_key_length(ctx)) == 0)
290 } else if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
293 DES_set_odd_parity(deskey);
294 if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
295 DES_set_odd_parity(deskey + 1);
296 if (EVP_CIPHER_CTX_key_length(ctx) >= 24)
297 DES_set_odd_parity(deskey + 2);
305 const EVP_CIPHER *EVP_des_ede(void)
310 const EVP_CIPHER *EVP_des_ede3(void)
312 return &des_ede3_ecb;
316 # include <openssl/sha.h>
318 static const unsigned char wrap_iv[8] =
319 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
321 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
322 const unsigned char *in, size_t inl)
324 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
330 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
331 /* Decrypt first block which will end up as icv */
332 des_ede_cbc_cipher(ctx, icv, in, 8);
333 /* Decrypt central blocks */
335 * If decrypting in place move whole output along a block so the next
336 * des_ede_cbc_cipher is in place.
339 memmove(out, out + 8, inl - 8);
342 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
343 /* Decrypt final block which will be IV */
344 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
345 /* Reverse order of everything */
346 BUF_reverse(icv, NULL, 8);
347 BUF_reverse(out, NULL, inl - 16);
348 BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
349 /* Decrypt again using new IV */
350 des_ede_cbc_cipher(ctx, out, out, inl - 16);
351 des_ede_cbc_cipher(ctx, icv, icv, 8);
352 /* Work out SHA1 hash of first portion */
353 SHA1(out, inl - 16, sha1tmp);
355 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
357 OPENSSL_cleanse(icv, 8);
358 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
359 OPENSSL_cleanse(iv, 8);
360 OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
362 OPENSSL_cleanse(out, inl - 16);
367 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
368 const unsigned char *in, size_t inl)
370 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
373 /* Copy input to output buffer + 8 so we have space for IV */
374 memmove(out + 8, in, inl);
376 SHA1(in, inl, sha1tmp);
377 memcpy(out + inl + 8, sha1tmp, 8);
378 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
379 /* Generate random IV */
380 if (ctx->drbg != NULL) {
381 if (RAND_DRBG_bytes(ctx->drbg, EVP_CIPHER_CTX_iv_noconst(ctx), 8) == 0)
383 } else if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0) {
386 memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
387 /* Encrypt everything after IV in place */
388 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
389 BUF_reverse(out, NULL, inl + 16);
390 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
391 des_ede_cbc_cipher(ctx, out, out, inl + 16);
395 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
396 const unsigned char *in, size_t inl)
399 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
400 * is more than will ever be needed. Also input length must be a multiple
403 if (inl >= EVP_MAXCHUNK || inl % 8)
406 if (is_partially_overlapping(out, in, inl)) {
407 EVPerr(EVP_F_DES_EDE3_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
411 if (EVP_CIPHER_CTX_encrypting(ctx))
412 return des_ede3_wrap(ctx, out, in, inl);
414 return des_ede3_unwrap(ctx, out, in, inl);
417 static const EVP_CIPHER des3_wrap = {
418 NID_id_smime_alg_CMS3DESwrap,
420 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
421 | EVP_CIPH_FLAG_DEFAULT_ASN1,
422 des_ede3_init_key, des_ede3_wrap_cipher,
425 NULL, NULL, NULL, NULL
428 const EVP_CIPHER *EVP_des_ede3_wrap(void)