1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 #include "internal/cryptlib.h"
60 #ifndef OPENSSL_NO_DES
61 # include <openssl/evp.h>
62 # include <openssl/objects.h>
63 # include "internal/evp_int.h"
64 # include <openssl/des.h>
65 # include <openssl/rand.h>
73 void (*cbc) (const void *, void *, size_t, const void *, void *);
77 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
78 /* ---------^^^ this is not a typo, just a way to detect that
79 * assembler support was in general requested... */
80 # include "sparc_arch.h"
82 extern unsigned int OPENSSL_sparcv9cap_P[];
84 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
86 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
87 void des_t4_cbc_encrypt(const void *inp, void *out, size_t len,
88 DES_key_schedule *ks, unsigned char iv[8]);
89 void des_t4_cbc_decrypt(const void *inp, void *out, size_t len,
90 DES_key_schedule *ks, unsigned char iv[8]);
93 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
94 const unsigned char *iv, int enc);
95 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
98 * Because of various casts and different names can't use
99 * IMPLEMENT_BLOCK_CIPHER
102 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
103 const unsigned char *in, size_t inl)
105 BLOCK_CIPHER_ecb_loop()
106 DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
107 EVP_CIPHER_CTX_cipher_data(ctx),
108 EVP_CIPHER_CTX_encrypting(ctx));
112 static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
113 const unsigned char *in, size_t inl)
115 while (inl >= EVP_MAXCHUNK) {
116 int num = EVP_CIPHER_CTX_num(ctx);
117 DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
118 EVP_CIPHER_CTX_cipher_data(ctx),
119 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
120 EVP_CIPHER_CTX_set_num(ctx, num);
126 int num = EVP_CIPHER_CTX_num(ctx);
127 DES_ofb64_encrypt(in, out, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx),
128 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
129 EVP_CIPHER_CTX_set_num(ctx, num);
134 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
135 const unsigned char *in, size_t inl)
137 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_cipher_data(ctx);
139 if (dat->stream.cbc) {
140 (*dat->stream.cbc) (in, out, inl, &dat->ks.ks, EVP_CIPHER_CTX_iv_noconst(ctx));
143 while (inl >= EVP_MAXCHUNK) {
144 DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, EVP_CIPHER_CTX_cipher_data(ctx),
145 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
151 DES_ncbc_encrypt(in, out, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx),
152 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
156 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
157 const unsigned char *in, size_t inl)
159 while (inl >= EVP_MAXCHUNK) {
160 int num = EVP_CIPHER_CTX_num(ctx);
161 DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
162 EVP_CIPHER_CTX_cipher_data(ctx),
163 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
164 EVP_CIPHER_CTX_encrypting(ctx));
165 EVP_CIPHER_CTX_set_num(ctx, num);
171 int num = EVP_CIPHER_CTX_num(ctx);
172 DES_cfb64_encrypt(in, out, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx),
173 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
174 EVP_CIPHER_CTX_encrypting(ctx));
175 EVP_CIPHER_CTX_set_num(ctx, num);
181 * Although we have a CFB-r implementation for DES, it doesn't pack the right
182 * way, so wrap it here
184 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
185 const unsigned char *in, size_t inl)
187 size_t n, chunk = EVP_MAXCHUNK / 8;
188 unsigned char c[1], d[1];
193 while (inl && inl >= chunk) {
194 for (n = 0; n < chunk * 8; ++n) {
195 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
196 DES_cfb_encrypt(c, d, 1, 1, EVP_CIPHER_CTX_cipher_data(ctx),
197 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
199 (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) |
200 ((d[0] & 0x80) >> (unsigned int)(n % 8));
212 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
213 const unsigned char *in, size_t inl)
215 while (inl >= EVP_MAXCHUNK) {
216 DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK, EVP_CIPHER_CTX_cipher_data(ctx),
217 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
223 DES_cfb_encrypt(in, out, 8, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx),
224 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
228 BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64,
229 EVP_CIPH_RAND_KEY, des_init_key, NULL,
230 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
232 BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1,
233 EVP_CIPH_RAND_KEY, des_init_key, NULL,
234 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
236 BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 8,
237 EVP_CIPH_RAND_KEY, des_init_key, NULL,
238 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
240 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
241 const unsigned char *iv, int enc)
243 DES_cblock *deskey = (DES_cblock *)key;
244 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_cipher_data(ctx);
246 dat->stream.cbc = NULL;
247 # if defined(SPARC_DES_CAPABLE)
248 if (SPARC_DES_CAPABLE) {
249 int mode = EVP_CIPHER_CTX_mode(ctx);
251 if (mode == EVP_CIPH_CBC_MODE) {
252 des_t4_key_expand(key, &dat->ks.ks);
253 dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt;
258 DES_set_key_unchecked(deskey, EVP_CIPHER_CTX_cipher_data(ctx));
262 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
266 case EVP_CTRL_RAND_KEY:
267 if (RAND_bytes(ptr, 8) <= 0)
269 DES_set_odd_parity((DES_cblock *)ptr);