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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
2 | * All rights reserved. |
3 | * | |
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. | |
0f113f3e | 7 | * |
d02b48c6 RE |
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). | |
0f113f3e | 14 | * |
d02b48c6 RE |
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. | |
0f113f3e | 21 | * |
d02b48c6 RE |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
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 :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
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 | |
50 | * SUCH DAMAGE. | |
0f113f3e | 51 | * |
d02b48c6 RE |
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.] | |
56 | */ | |
57 | ||
58 | #include <stdio.h> | |
b39fc560 | 59 | #include "internal/cryptlib.h" |
9e9e8cb6 | 60 | #ifndef OPENSSL_NO_DES |
0f113f3e MC |
61 | # include <openssl/evp.h> |
62 | # include <openssl/objects.h> | |
6435f0f6 | 63 | # include "internal/evp_int.h" |
0f113f3e MC |
64 | # include <openssl/des.h> |
65 | # include <openssl/rand.h> | |
d02b48c6 | 66 | |
0f113f3e MC |
67 | typedef struct { |
68 | union { | |
69 | double align; | |
70 | DES_key_schedule ks; | |
71 | } ks; | |
72 | union { | |
7687f525 AP |
73 | void (*cbc) (const void *, void *, size_t, |
74 | const DES_key_schedule *, unsigned char *); | |
0f113f3e MC |
75 | } stream; |
76 | } EVP_DES_KEY; | |
c5d975a7 | 77 | |
0f113f3e | 78 | # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__)) |
7687f525 | 79 | /* ----------^^^ this is not a typo, just a way to detect that |
c5d975a7 | 80 | * assembler support was in general requested... */ |
0f113f3e | 81 | # include "sparc_arch.h" |
c5d975a7 AP |
82 | |
83 | extern unsigned int OPENSSL_sparcv9cap_P[]; | |
84 | ||
0f113f3e | 85 | # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES) |
c5d975a7 | 86 | |
0f113f3e MC |
87 | void des_t4_key_expand(const void *key, DES_key_schedule *ks); |
88 | void des_t4_cbc_encrypt(const void *inp, void *out, size_t len, | |
7687f525 | 89 | const DES_key_schedule *ks, unsigned char iv[8]); |
0f113f3e | 90 | void des_t4_cbc_decrypt(const void *inp, void *out, size_t len, |
7687f525 | 91 | const DES_key_schedule *ks, unsigned char iv[8]); |
0f113f3e | 92 | # endif |
c5d975a7 | 93 | |
1921eaad | 94 | static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e | 95 | const unsigned char *iv, int enc); |
216659eb | 96 | static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr); |
d02b48c6 | 97 | |
0f113f3e MC |
98 | /* |
99 | * Because of various casts and different names can't use | |
100 | * IMPLEMENT_BLOCK_CIPHER | |
101 | */ | |
edf0bfb5 | 102 | |
1921eaad | 103 | static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 104 | const unsigned char *in, size_t inl) |
57ae2e24 | 105 | { |
0f113f3e MC |
106 | BLOCK_CIPHER_ecb_loop() |
107 | DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i), | |
6435f0f6 RL |
108 | EVP_CIPHER_CTX_cipher_data(ctx), |
109 | EVP_CIPHER_CTX_encrypting(ctx)); | |
0f113f3e | 110 | return 1; |
57ae2e24 | 111 | } |
d02b48c6 | 112 | |
1921eaad | 113 | static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 114 | const unsigned char *in, size_t inl) |
57ae2e24 | 115 | { |
0f113f3e | 116 | while (inl >= EVP_MAXCHUNK) { |
6435f0f6 RL |
117 | int num = EVP_CIPHER_CTX_num(ctx); |
118 | DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, | |
119 | EVP_CIPHER_CTX_cipher_data(ctx), | |
120 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num); | |
121 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e MC |
122 | inl -= EVP_MAXCHUNK; |
123 | in += EVP_MAXCHUNK; | |
124 | out += EVP_MAXCHUNK; | |
125 | } | |
6435f0f6 RL |
126 | if (inl) { |
127 | int num = EVP_CIPHER_CTX_num(ctx); | |
128 | DES_ofb64_encrypt(in, out, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx), | |
129 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num); | |
130 | EVP_CIPHER_CTX_set_num(ctx, num); | |
131 | } | |
0f113f3e | 132 | return 1; |
57ae2e24 DSH |
133 | } |
134 | ||
1921eaad | 135 | static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 136 | const unsigned char *in, size_t inl) |
57ae2e24 | 137 | { |
6435f0f6 | 138 | EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_cipher_data(ctx); |
c5d975a7 | 139 | |
7687f525 AP |
140 | if (dat->stream.cbc != NULL) { |
141 | (*dat->stream.cbc) (in, out, inl, &dat->ks.ks, | |
142 | EVP_CIPHER_CTX_iv_noconst(ctx)); | |
0f113f3e MC |
143 | return 1; |
144 | } | |
145 | while (inl >= EVP_MAXCHUNK) { | |
7687f525 AP |
146 | DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, |
147 | EVP_CIPHER_CTX_cipher_data(ctx), | |
148 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), | |
149 | EVP_CIPHER_CTX_encrypting(ctx)); | |
0f113f3e MC |
150 | inl -= EVP_MAXCHUNK; |
151 | in += EVP_MAXCHUNK; | |
152 | out += EVP_MAXCHUNK; | |
153 | } | |
154 | if (inl) | |
6435f0f6 | 155 | DES_ncbc_encrypt(in, out, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx), |
7687f525 AP |
156 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), |
157 | EVP_CIPHER_CTX_encrypting(ctx)); | |
0f113f3e | 158 | return 1; |
57ae2e24 DSH |
159 | } |
160 | ||
8c6336b0 | 161 | static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 162 | const unsigned char *in, size_t inl) |
57ae2e24 | 163 | { |
0f113f3e | 164 | while (inl >= EVP_MAXCHUNK) { |
6435f0f6 RL |
165 | int num = EVP_CIPHER_CTX_num(ctx); |
166 | DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, | |
167 | EVP_CIPHER_CTX_cipher_data(ctx), | |
168 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num, | |
169 | EVP_CIPHER_CTX_encrypting(ctx)); | |
170 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e MC |
171 | inl -= EVP_MAXCHUNK; |
172 | in += EVP_MAXCHUNK; | |
173 | out += EVP_MAXCHUNK; | |
174 | } | |
6435f0f6 RL |
175 | if (inl) { |
176 | int num = EVP_CIPHER_CTX_num(ctx); | |
177 | DES_cfb64_encrypt(in, out, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx), | |
178 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num, | |
179 | EVP_CIPHER_CTX_encrypting(ctx)); | |
180 | EVP_CIPHER_CTX_set_num(ctx, num); | |
181 | } | |
0f113f3e | 182 | return 1; |
57ae2e24 DSH |
183 | } |
184 | ||
0f113f3e MC |
185 | /* |
186 | * Although we have a CFB-r implementation for DES, it doesn't pack the right | |
187 | * way, so wrap it here | |
188 | */ | |
8c6336b0 | 189 | static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
190 | const unsigned char *in, size_t inl) |
191 | { | |
192 | size_t n, chunk = EVP_MAXCHUNK / 8; | |
193 | unsigned char c[1], d[1]; | |
8c6336b0 | 194 | |
0f113f3e MC |
195 | if (inl < chunk) |
196 | chunk = inl; | |
b444ac3e | 197 | |
0f113f3e MC |
198 | while (inl && inl >= chunk) { |
199 | for (n = 0; n < chunk * 8; ++n) { | |
200 | c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0; | |
6435f0f6 | 201 | DES_cfb_encrypt(c, d, 1, 1, EVP_CIPHER_CTX_cipher_data(ctx), |
7687f525 AP |
202 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), |
203 | EVP_CIPHER_CTX_encrypting(ctx)); | |
0f113f3e MC |
204 | out[n / 8] = |
205 | (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) | | |
206 | ((d[0] & 0x80) >> (unsigned int)(n % 8)); | |
207 | } | |
208 | inl -= chunk; | |
209 | in += chunk; | |
210 | out += chunk; | |
211 | if (inl < chunk) | |
212 | chunk = inl; | |
213 | } | |
b444ac3e | 214 | |
8c6336b0 | 215 | return 1; |
0f113f3e | 216 | } |
8c6336b0 AP |
217 | |
218 | static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
219 | const unsigned char *in, size_t inl) |
220 | { | |
221 | while (inl >= EVP_MAXCHUNK) { | |
7687f525 AP |
222 | DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK, |
223 | EVP_CIPHER_CTX_cipher_data(ctx), | |
224 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), | |
225 | EVP_CIPHER_CTX_encrypting(ctx)); | |
0f113f3e MC |
226 | inl -= EVP_MAXCHUNK; |
227 | in += EVP_MAXCHUNK; | |
228 | out += EVP_MAXCHUNK; | |
229 | } | |
b444ac3e | 230 | if (inl) |
6435f0f6 | 231 | DES_cfb_encrypt(in, out, 8, (long)inl, EVP_CIPHER_CTX_cipher_data(ctx), |
7687f525 AP |
232 | (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), |
233 | EVP_CIPHER_CTX_encrypting(ctx)); | |
8c6336b0 | 234 | return 1; |
0f113f3e | 235 | } |
8c6336b0 | 236 | |
c5d975a7 | 237 | BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64, |
0f113f3e MC |
238 | EVP_CIPH_RAND_KEY, des_init_key, NULL, |
239 | EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl) | |
d02b48c6 | 240 | |
0f113f3e MC |
241 | BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1, |
242 | EVP_CIPH_RAND_KEY, des_init_key, NULL, | |
243 | EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl) | |
8c6336b0 | 244 | |
0f113f3e MC |
245 | BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 8, |
246 | EVP_CIPH_RAND_KEY, des_init_key, NULL, | |
247 | EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl) | |
edf0bfb5 | 248 | |
1921eaad | 249 | static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
250 | const unsigned char *iv, int enc) |
251 | { | |
252 | DES_cblock *deskey = (DES_cblock *)key; | |
6435f0f6 | 253 | EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_cipher_data(ctx); |
c5d975a7 | 254 | |
0f113f3e MC |
255 | dat->stream.cbc = NULL; |
256 | # if defined(SPARC_DES_CAPABLE) | |
257 | if (SPARC_DES_CAPABLE) { | |
ecdd0ff7 | 258 | int mode = EVP_CIPHER_CTX_mode(ctx); |
c5d975a7 | 259 | |
0f113f3e MC |
260 | if (mode == EVP_CIPH_CBC_MODE) { |
261 | des_t4_key_expand(key, &dat->ks.ks); | |
262 | dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt; | |
263 | return 1; | |
264 | } | |
265 | } | |
266 | # endif | |
6435f0f6 | 267 | DES_set_key_unchecked(deskey, EVP_CIPHER_CTX_cipher_data(ctx)); |
0f113f3e MC |
268 | return 1; |
269 | } | |
57ae2e24 | 270 | |
216659eb | 271 | static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) |
0f113f3e MC |
272 | { |
273 | ||
274 | switch (type) { | |
275 | case EVP_CTRL_RAND_KEY: | |
276 | if (RAND_bytes(ptr, 8) <= 0) | |
277 | return 0; | |
278 | DES_set_odd_parity((DES_cblock *)ptr); | |
279 | return 1; | |
216659eb | 280 | |
0f113f3e MC |
281 | default: |
282 | return -1; | |
283 | } | |
284 | } | |
216659eb | 285 | |
d02f751c | 286 | #endif |