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 "evp_locl.h"
23 DES_key_schedule ks[3];
26 void (*cbc) (const void *, void *, size_t,
27 const DES_key_schedule *, unsigned char *);
34 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
35 /* ---------^^^ this is not a typo, just a way to detect that
36 * assembler support was in general requested... */
37 # include "sparc_arch.h"
39 extern unsigned int OPENSSL_sparcv9cap_P[];
41 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
43 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
44 void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
45 const DES_key_schedule ks[3], unsigned char iv[8]);
46 void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
47 const DES_key_schedule ks[3], unsigned char iv[8]);
50 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
51 const unsigned char *iv, int enc);
53 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
54 const unsigned char *iv, int enc);
56 static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
58 # define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
61 * Because of various casts and different args can't use
62 * IMPLEMENT_BLOCK_CIPHER
65 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
66 const unsigned char *in, size_t inl)
68 BLOCK_CIPHER_ecb_loop()
69 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
70 (DES_cblock *)(out + i),
71 &data(ctx)->ks1, &data(ctx)->ks2,
72 &data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
76 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
77 const unsigned char *in, size_t inl)
79 while (inl >= EVP_MAXCHUNK) {
80 int num = EVP_CIPHER_CTX_num(ctx);
81 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
82 &data(ctx)->ks1, &data(ctx)->ks2,
84 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
86 EVP_CIPHER_CTX_set_num(ctx, num);
92 int num = EVP_CIPHER_CTX_num(ctx);
93 DES_ede3_ofb64_encrypt(in, out, (long)inl,
94 &data(ctx)->ks1, &data(ctx)->ks2,
96 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
98 EVP_CIPHER_CTX_set_num(ctx, num);
103 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
104 const unsigned char *in, size_t inl)
106 DES_EDE_KEY *dat = data(ctx);
108 if (dat->stream.cbc != NULL) {
109 (*dat->stream.cbc) (in, out, inl, dat->ks.ks,
110 EVP_CIPHER_CTX_iv_noconst(ctx));
114 while (inl >= EVP_MAXCHUNK) {
115 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
116 &dat->ks1, &dat->ks2, &dat->ks3,
117 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
118 EVP_CIPHER_CTX_encrypting(ctx));
124 DES_ede3_cbc_encrypt(in, out, (long)inl,
125 &dat->ks1, &dat->ks2, &dat->ks3,
126 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
127 EVP_CIPHER_CTX_encrypting(ctx));
131 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
132 const unsigned char *in, size_t inl)
134 while (inl >= EVP_MAXCHUNK) {
135 int num = EVP_CIPHER_CTX_num(ctx);
136 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
137 &data(ctx)->ks1, &data(ctx)->ks2,
139 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
140 &num, EVP_CIPHER_CTX_encrypting(ctx));
141 EVP_CIPHER_CTX_set_num(ctx, num);
147 int num = EVP_CIPHER_CTX_num(ctx);
148 DES_ede3_cfb64_encrypt(in, out, (long)inl,
149 &data(ctx)->ks1, &data(ctx)->ks2,
151 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
152 &num, EVP_CIPHER_CTX_encrypting(ctx));
153 EVP_CIPHER_CTX_set_num(ctx, num);
159 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
160 * right way, so wrap it here
162 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
163 const unsigned char *in, size_t inl)
166 unsigned char c[1], d[1];
168 if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
170 for (n = 0; n < inl; ++n) {
171 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
172 DES_ede3_cfb_encrypt(c, d, 1, 1,
173 &data(ctx)->ks1, &data(ctx)->ks2,
175 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
176 EVP_CIPHER_CTX_encrypting(ctx));
177 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
178 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
184 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
185 const unsigned char *in, size_t inl)
187 while (inl >= EVP_MAXCHUNK) {
188 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
189 &data(ctx)->ks1, &data(ctx)->ks2,
191 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
192 EVP_CIPHER_CTX_encrypting(ctx));
198 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
199 &data(ctx)->ks1, &data(ctx)->ks2,
201 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
202 EVP_CIPHER_CTX_encrypting(ctx));
206 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
207 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
208 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
209 # define des_ede3_cfb64_cipher des_ede_cfb64_cipher
210 # define des_ede3_ofb_cipher des_ede_ofb_cipher
211 # define des_ede3_cbc_cipher des_ede_cbc_cipher
212 # define des_ede3_ecb_cipher des_ede_ecb_cipher
213 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
214 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
215 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
217 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
218 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
219 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
221 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
222 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
223 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
225 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
226 const unsigned char *iv, int enc)
228 DES_cblock *deskey = (DES_cblock *)key;
229 DES_EDE_KEY *dat = data(ctx);
231 dat->stream.cbc = NULL;
232 # if defined(SPARC_DES_CAPABLE)
233 if (SPARC_DES_CAPABLE) {
234 int mode = EVP_CIPHER_CTX_mode(ctx);
236 if (mode == EVP_CIPH_CBC_MODE) {
237 des_t4_key_expand(&deskey[0], &dat->ks1);
238 des_t4_key_expand(&deskey[1], &dat->ks2);
239 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
240 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
241 des_t4_ede3_cbc_decrypt;
246 DES_set_key_unchecked(&deskey[0], &dat->ks1);
247 DES_set_key_unchecked(&deskey[1], &dat->ks2);
248 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
252 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
253 const unsigned char *iv, int enc)
255 DES_cblock *deskey = (DES_cblock *)key;
256 DES_EDE_KEY *dat = data(ctx);
258 dat->stream.cbc = NULL;
259 # if defined(SPARC_DES_CAPABLE)
260 if (SPARC_DES_CAPABLE) {
261 int mode = EVP_CIPHER_CTX_mode(ctx);
263 if (mode == EVP_CIPH_CBC_MODE) {
264 des_t4_key_expand(&deskey[0], &dat->ks1);
265 des_t4_key_expand(&deskey[1], &dat->ks2);
266 des_t4_key_expand(&deskey[2], &dat->ks3);
267 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
268 des_t4_ede3_cbc_decrypt;
273 DES_set_key_unchecked(&deskey[0], &dat->ks1);
274 DES_set_key_unchecked(&deskey[1], &dat->ks2);
275 DES_set_key_unchecked(&deskey[2], &dat->ks3);
279 static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
282 DES_cblock *deskey = ptr;
285 case EVP_CTRL_RAND_KEY:
286 if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0)
288 DES_set_odd_parity(deskey);
289 if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
290 DES_set_odd_parity(deskey + 1);
291 if (EVP_CIPHER_CTX_key_length(ctx) >= 24)
292 DES_set_odd_parity(deskey + 2);
300 const EVP_CIPHER *EVP_des_ede(void)
305 const EVP_CIPHER *EVP_des_ede3(void)
307 return &des_ede3_ecb;
311 # include <openssl/sha.h>
313 static const unsigned char wrap_iv[8] =
314 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
316 static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
317 const unsigned char *in, size_t inl)
319 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
325 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
326 /* Decrypt first block which will end up as icv */
327 des_ede_cbc_cipher(ctx, icv, in, 8);
328 /* Decrypt central blocks */
330 * If decrypting in place move whole output along a block so the next
331 * des_ede_cbc_cipher is in place.
334 memmove(out, out + 8, inl - 8);
337 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
338 /* Decrypt final block which will be IV */
339 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
340 /* Reverse order of everything */
341 BUF_reverse(icv, NULL, 8);
342 BUF_reverse(out, NULL, inl - 16);
343 BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
344 /* Decrypt again using new IV */
345 des_ede_cbc_cipher(ctx, out, out, inl - 16);
346 des_ede_cbc_cipher(ctx, icv, icv, 8);
347 /* Work out SHA1 hash of first portion */
348 SHA1(out, inl - 16, sha1tmp);
350 if (!CRYPTO_memcmp(sha1tmp, icv, 8))
352 OPENSSL_cleanse(icv, 8);
353 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
354 OPENSSL_cleanse(iv, 8);
355 OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
357 OPENSSL_cleanse(out, inl - 16);
362 static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
363 const unsigned char *in, size_t inl)
365 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
368 /* Copy input to output buffer + 8 so we have space for IV */
369 memmove(out + 8, in, inl);
371 SHA1(in, inl, sha1tmp);
372 memcpy(out + inl + 8, sha1tmp, 8);
373 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
374 /* Generate random IV */
375 if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0)
377 memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
378 /* Encrypt everything after IV in place */
379 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
380 BUF_reverse(out, NULL, inl + 16);
381 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
382 des_ede_cbc_cipher(ctx, out, out, inl + 16);
386 static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
387 const unsigned char *in, size_t inl)
390 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
391 * is more than will ever be needed. Also input length must be a multiple
394 if (inl >= EVP_MAXCHUNK || inl % 8)
397 if (is_partially_overlapping(out, in, inl)) {
398 EVPerr(EVP_F_DES_EDE3_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
402 if (EVP_CIPHER_CTX_encrypting(ctx))
403 return des_ede3_wrap(ctx, out, in, inl);
405 return des_ede3_unwrap(ctx, out, in, inl);
408 static const EVP_CIPHER des3_wrap = {
409 NID_id_smime_alg_CMS3DESwrap,
411 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
412 | EVP_CIPH_FLAG_DEFAULT_ASN1,
413 des_ede3_init_key, des_ede3_wrap_cipher,
416 NULL, NULL, NULL, NULL
419 const EVP_CIPHER *EVP_des_ede3_wrap(void)