]>
Commit | Line | Data |
---|---|---|
d02b48c6 | 1 | /* crypto/des/set_key.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | /* set_key.c v 1.4 eay 24/9/91 | |
60 | * 1.4 Speed up by 400% :-) | |
61 | * 1.3 added register declarations. | |
62 | * 1.2 unrolled make_key_sched a bit more | |
63 | * 1.1 added norm_expand_bits | |
64 | * 1.0 First working version | |
65 | */ | |
66 | #include "des_locl.h" | |
d02b48c6 | 67 | |
e4317d20 | 68 | OPENSSL_IMPLEMENT_GLOBAL(int,DES_check_key,0) /* defaults to false */ |
d02b48c6 | 69 | |
48b83a25 UM |
70 | static const unsigned char odd_parity[256]={ |
71 | 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14, | |
72 | 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31, | |
73 | 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47, | |
74 | 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62, | |
75 | 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79, | |
76 | 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94, | |
77 | 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110, | |
78 | 112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127, | |
79 | 128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143, | |
80 | 145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158, | |
81 | 161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174, | |
82 | 176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191, | |
83 | 193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206, | |
84 | 208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223, | |
85 | 224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239, | |
86 | 241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254}; | |
87 | ||
c2e4f17c | 88 | void DES_set_odd_parity(DES_cblock *key) |
d02b48c6 | 89 | { |
27545970 | 90 | unsigned int i; |
d02b48c6 RE |
91 | |
92 | for (i=0; i<DES_KEY_SZ; i++) | |
edf0bfb5 | 93 | (*key)[i]=odd_parity[(*key)[i]]; |
d02b48c6 RE |
94 | } |
95 | ||
c2e4f17c | 96 | int DES_check_key_parity(const_DES_cblock *key) |
d02b48c6 | 97 | { |
27545970 | 98 | unsigned int i; |
d02b48c6 RE |
99 | |
100 | for (i=0; i<DES_KEY_SZ; i++) | |
101 | { | |
edf0bfb5 | 102 | if ((*key)[i] != odd_parity[(*key)[i]]) |
d02b48c6 RE |
103 | return(0); |
104 | } | |
105 | return(1); | |
106 | } | |
107 | ||
108 | /* Weak and semi week keys as take from | |
109 | * %A D.W. Davies | |
110 | * %A W.L. Price | |
111 | * %T Security for Computer Networks | |
112 | * %I John Wiley & Sons | |
113 | * %D 1984 | |
114 | * Many thanks to smb@ulysses.att.com (Steven Bellovin) for the reference | |
115 | * (and actual cblock values). | |
116 | */ | |
117 | #define NUM_WEAK_KEY 16 | |
c2e4f17c | 118 | static DES_cblock weak_keys[NUM_WEAK_KEY]={ |
d02b48c6 RE |
119 | /* weak keys */ |
120 | {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01}, | |
121 | {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE}, | |
dfeab068 RE |
122 | {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E}, |
123 | {0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1}, | |
d02b48c6 RE |
124 | /* semi-weak keys */ |
125 | {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE}, | |
126 | {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01}, | |
127 | {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1}, | |
128 | {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E}, | |
129 | {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1}, | |
130 | {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01}, | |
131 | {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE}, | |
132 | {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E}, | |
133 | {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E}, | |
134 | {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01}, | |
135 | {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE}, | |
136 | {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}}; | |
137 | ||
c2e4f17c | 138 | int DES_is_weak_key(const_DES_cblock *key) |
d02b48c6 RE |
139 | { |
140 | int i; | |
141 | ||
142 | for (i=0; i<NUM_WEAK_KEY; i++) | |
657e60fa | 143 | /* Added == 0 to comparison, I obviously don't run |
d02b48c6 RE |
144 | * this section very often :-(, thanks to |
145 | * engineering@MorningStar.Com for the fix | |
146 | * eay 93/06/29 | |
147 | * Another problem, I was comparing only the first 4 | |
148 | * bytes, 97/03/18 */ | |
c2e4f17c | 149 | if (memcmp(weak_keys[i],key,sizeof(DES_cblock)) == 0) return(1); |
d02b48c6 RE |
150 | return(0); |
151 | } | |
152 | ||
153 | /* NOW DEFINED IN des_local.h | |
154 | * See ecb_encrypt.c for a pseudo description of these macros. | |
155 | * #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ | |
156 | * (b)^=(t),\ | |
157 | * (a)=((a)^((t)<<(n)))) | |
158 | */ | |
159 | ||
160 | #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ | |
161 | (a)=(a)^(t)^(t>>(16-(n)))) | |
162 | ||
48b83a25 UM |
163 | static const DES_LONG des_skb[8][64]={ |
164 | { | |
165 | /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ | |
166 | 0x00000000L,0x00000010L,0x20000000L,0x20000010L, | |
167 | 0x00010000L,0x00010010L,0x20010000L,0x20010010L, | |
168 | 0x00000800L,0x00000810L,0x20000800L,0x20000810L, | |
169 | 0x00010800L,0x00010810L,0x20010800L,0x20010810L, | |
170 | 0x00000020L,0x00000030L,0x20000020L,0x20000030L, | |
171 | 0x00010020L,0x00010030L,0x20010020L,0x20010030L, | |
172 | 0x00000820L,0x00000830L,0x20000820L,0x20000830L, | |
173 | 0x00010820L,0x00010830L,0x20010820L,0x20010830L, | |
174 | 0x00080000L,0x00080010L,0x20080000L,0x20080010L, | |
175 | 0x00090000L,0x00090010L,0x20090000L,0x20090010L, | |
176 | 0x00080800L,0x00080810L,0x20080800L,0x20080810L, | |
177 | 0x00090800L,0x00090810L,0x20090800L,0x20090810L, | |
178 | 0x00080020L,0x00080030L,0x20080020L,0x20080030L, | |
179 | 0x00090020L,0x00090030L,0x20090020L,0x20090030L, | |
180 | 0x00080820L,0x00080830L,0x20080820L,0x20080830L, | |
181 | 0x00090820L,0x00090830L,0x20090820L,0x20090830L, | |
182 | },{ | |
183 | /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ | |
184 | 0x00000000L,0x02000000L,0x00002000L,0x02002000L, | |
185 | 0x00200000L,0x02200000L,0x00202000L,0x02202000L, | |
186 | 0x00000004L,0x02000004L,0x00002004L,0x02002004L, | |
187 | 0x00200004L,0x02200004L,0x00202004L,0x02202004L, | |
188 | 0x00000400L,0x02000400L,0x00002400L,0x02002400L, | |
189 | 0x00200400L,0x02200400L,0x00202400L,0x02202400L, | |
190 | 0x00000404L,0x02000404L,0x00002404L,0x02002404L, | |
191 | 0x00200404L,0x02200404L,0x00202404L,0x02202404L, | |
192 | 0x10000000L,0x12000000L,0x10002000L,0x12002000L, | |
193 | 0x10200000L,0x12200000L,0x10202000L,0x12202000L, | |
194 | 0x10000004L,0x12000004L,0x10002004L,0x12002004L, | |
195 | 0x10200004L,0x12200004L,0x10202004L,0x12202004L, | |
196 | 0x10000400L,0x12000400L,0x10002400L,0x12002400L, | |
197 | 0x10200400L,0x12200400L,0x10202400L,0x12202400L, | |
198 | 0x10000404L,0x12000404L,0x10002404L,0x12002404L, | |
199 | 0x10200404L,0x12200404L,0x10202404L,0x12202404L, | |
200 | },{ | |
201 | /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ | |
202 | 0x00000000L,0x00000001L,0x00040000L,0x00040001L, | |
203 | 0x01000000L,0x01000001L,0x01040000L,0x01040001L, | |
204 | 0x00000002L,0x00000003L,0x00040002L,0x00040003L, | |
205 | 0x01000002L,0x01000003L,0x01040002L,0x01040003L, | |
206 | 0x00000200L,0x00000201L,0x00040200L,0x00040201L, | |
207 | 0x01000200L,0x01000201L,0x01040200L,0x01040201L, | |
208 | 0x00000202L,0x00000203L,0x00040202L,0x00040203L, | |
209 | 0x01000202L,0x01000203L,0x01040202L,0x01040203L, | |
210 | 0x08000000L,0x08000001L,0x08040000L,0x08040001L, | |
211 | 0x09000000L,0x09000001L,0x09040000L,0x09040001L, | |
212 | 0x08000002L,0x08000003L,0x08040002L,0x08040003L, | |
213 | 0x09000002L,0x09000003L,0x09040002L,0x09040003L, | |
214 | 0x08000200L,0x08000201L,0x08040200L,0x08040201L, | |
215 | 0x09000200L,0x09000201L,0x09040200L,0x09040201L, | |
216 | 0x08000202L,0x08000203L,0x08040202L,0x08040203L, | |
217 | 0x09000202L,0x09000203L,0x09040202L,0x09040203L, | |
218 | },{ | |
219 | /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ | |
220 | 0x00000000L,0x00100000L,0x00000100L,0x00100100L, | |
221 | 0x00000008L,0x00100008L,0x00000108L,0x00100108L, | |
222 | 0x00001000L,0x00101000L,0x00001100L,0x00101100L, | |
223 | 0x00001008L,0x00101008L,0x00001108L,0x00101108L, | |
224 | 0x04000000L,0x04100000L,0x04000100L,0x04100100L, | |
225 | 0x04000008L,0x04100008L,0x04000108L,0x04100108L, | |
226 | 0x04001000L,0x04101000L,0x04001100L,0x04101100L, | |
227 | 0x04001008L,0x04101008L,0x04001108L,0x04101108L, | |
228 | 0x00020000L,0x00120000L,0x00020100L,0x00120100L, | |
229 | 0x00020008L,0x00120008L,0x00020108L,0x00120108L, | |
230 | 0x00021000L,0x00121000L,0x00021100L,0x00121100L, | |
231 | 0x00021008L,0x00121008L,0x00021108L,0x00121108L, | |
232 | 0x04020000L,0x04120000L,0x04020100L,0x04120100L, | |
233 | 0x04020008L,0x04120008L,0x04020108L,0x04120108L, | |
234 | 0x04021000L,0x04121000L,0x04021100L,0x04121100L, | |
235 | 0x04021008L,0x04121008L,0x04021108L,0x04121108L, | |
236 | },{ | |
237 | /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ | |
238 | 0x00000000L,0x10000000L,0x00010000L,0x10010000L, | |
239 | 0x00000004L,0x10000004L,0x00010004L,0x10010004L, | |
240 | 0x20000000L,0x30000000L,0x20010000L,0x30010000L, | |
241 | 0x20000004L,0x30000004L,0x20010004L,0x30010004L, | |
242 | 0x00100000L,0x10100000L,0x00110000L,0x10110000L, | |
243 | 0x00100004L,0x10100004L,0x00110004L,0x10110004L, | |
244 | 0x20100000L,0x30100000L,0x20110000L,0x30110000L, | |
245 | 0x20100004L,0x30100004L,0x20110004L,0x30110004L, | |
246 | 0x00001000L,0x10001000L,0x00011000L,0x10011000L, | |
247 | 0x00001004L,0x10001004L,0x00011004L,0x10011004L, | |
248 | 0x20001000L,0x30001000L,0x20011000L,0x30011000L, | |
249 | 0x20001004L,0x30001004L,0x20011004L,0x30011004L, | |
250 | 0x00101000L,0x10101000L,0x00111000L,0x10111000L, | |
251 | 0x00101004L,0x10101004L,0x00111004L,0x10111004L, | |
252 | 0x20101000L,0x30101000L,0x20111000L,0x30111000L, | |
253 | 0x20101004L,0x30101004L,0x20111004L,0x30111004L, | |
254 | },{ | |
255 | /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ | |
256 | 0x00000000L,0x08000000L,0x00000008L,0x08000008L, | |
257 | 0x00000400L,0x08000400L,0x00000408L,0x08000408L, | |
258 | 0x00020000L,0x08020000L,0x00020008L,0x08020008L, | |
259 | 0x00020400L,0x08020400L,0x00020408L,0x08020408L, | |
260 | 0x00000001L,0x08000001L,0x00000009L,0x08000009L, | |
261 | 0x00000401L,0x08000401L,0x00000409L,0x08000409L, | |
262 | 0x00020001L,0x08020001L,0x00020009L,0x08020009L, | |
263 | 0x00020401L,0x08020401L,0x00020409L,0x08020409L, | |
264 | 0x02000000L,0x0A000000L,0x02000008L,0x0A000008L, | |
265 | 0x02000400L,0x0A000400L,0x02000408L,0x0A000408L, | |
266 | 0x02020000L,0x0A020000L,0x02020008L,0x0A020008L, | |
267 | 0x02020400L,0x0A020400L,0x02020408L,0x0A020408L, | |
268 | 0x02000001L,0x0A000001L,0x02000009L,0x0A000009L, | |
269 | 0x02000401L,0x0A000401L,0x02000409L,0x0A000409L, | |
270 | 0x02020001L,0x0A020001L,0x02020009L,0x0A020009L, | |
271 | 0x02020401L,0x0A020401L,0x02020409L,0x0A020409L, | |
272 | },{ | |
273 | /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ | |
274 | 0x00000000L,0x00000100L,0x00080000L,0x00080100L, | |
275 | 0x01000000L,0x01000100L,0x01080000L,0x01080100L, | |
276 | 0x00000010L,0x00000110L,0x00080010L,0x00080110L, | |
277 | 0x01000010L,0x01000110L,0x01080010L,0x01080110L, | |
278 | 0x00200000L,0x00200100L,0x00280000L,0x00280100L, | |
279 | 0x01200000L,0x01200100L,0x01280000L,0x01280100L, | |
280 | 0x00200010L,0x00200110L,0x00280010L,0x00280110L, | |
281 | 0x01200010L,0x01200110L,0x01280010L,0x01280110L, | |
282 | 0x00000200L,0x00000300L,0x00080200L,0x00080300L, | |
283 | 0x01000200L,0x01000300L,0x01080200L,0x01080300L, | |
284 | 0x00000210L,0x00000310L,0x00080210L,0x00080310L, | |
285 | 0x01000210L,0x01000310L,0x01080210L,0x01080310L, | |
286 | 0x00200200L,0x00200300L,0x00280200L,0x00280300L, | |
287 | 0x01200200L,0x01200300L,0x01280200L,0x01280300L, | |
288 | 0x00200210L,0x00200310L,0x00280210L,0x00280310L, | |
289 | 0x01200210L,0x01200310L,0x01280210L,0x01280310L, | |
290 | },{ | |
291 | /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ | |
292 | 0x00000000L,0x04000000L,0x00040000L,0x04040000L, | |
293 | 0x00000002L,0x04000002L,0x00040002L,0x04040002L, | |
294 | 0x00002000L,0x04002000L,0x00042000L,0x04042000L, | |
295 | 0x00002002L,0x04002002L,0x00042002L,0x04042002L, | |
296 | 0x00000020L,0x04000020L,0x00040020L,0x04040020L, | |
297 | 0x00000022L,0x04000022L,0x00040022L,0x04040022L, | |
298 | 0x00002020L,0x04002020L,0x00042020L,0x04042020L, | |
299 | 0x00002022L,0x04002022L,0x00042022L,0x04042022L, | |
300 | 0x00000800L,0x04000800L,0x00040800L,0x04040800L, | |
301 | 0x00000802L,0x04000802L,0x00040802L,0x04040802L, | |
302 | 0x00002800L,0x04002800L,0x00042800L,0x04042800L, | |
303 | 0x00002802L,0x04002802L,0x00042802L,0x04042802L, | |
304 | 0x00000820L,0x04000820L,0x00040820L,0x04040820L, | |
305 | 0x00000822L,0x04000822L,0x00040822L,0x04040822L, | |
306 | 0x00002820L,0x04002820L,0x00042820L,0x04042820L, | |
307 | 0x00002822L,0x04002822L,0x00042822L,0x04042822L, | |
308 | }}; | |
309 | ||
c2e4f17c | 310 | int DES_set_key(const_DES_cblock *key, DES_key_schedule *schedule) |
cddfe788 | 311 | { |
c2e4f17c | 312 | if (DES_check_key) |
cddfe788 | 313 | { |
c2e4f17c | 314 | return DES_set_key_checked(key, schedule); |
cddfe788 BM |
315 | } |
316 | else | |
317 | { | |
c2e4f17c | 318 | DES_set_key_unchecked(key, schedule); |
cddfe788 BM |
319 | return 0; |
320 | } | |
321 | } | |
322 | ||
d02b48c6 RE |
323 | /* return 0 if key parity is odd (correct), |
324 | * return -1 if key parity error, | |
325 | * return -2 if illegal weak key. | |
326 | */ | |
c2e4f17c | 327 | int DES_set_key_checked(const_DES_cblock *key, DES_key_schedule *schedule) |
cddfe788 | 328 | { |
c2e4f17c | 329 | if (!DES_check_key_parity(key)) |
cddfe788 | 330 | return(-1); |
c2e4f17c | 331 | if (DES_is_weak_key(key)) |
cddfe788 | 332 | return(-2); |
c2e4f17c | 333 | DES_set_key_unchecked(key, schedule); |
cddfe788 BM |
334 | return 0; |
335 | } | |
336 | ||
c2e4f17c | 337 | void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule) |
d02b48c6 RE |
338 | { |
339 | static int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0}; | |
340 | register DES_LONG c,d,t,s,t2; | |
e778802f | 341 | register const unsigned char *in; |
d02b48c6 RE |
342 | register DES_LONG *k; |
343 | register int i; | |
344 | ||
ba8fb521 | 345 | #ifdef OPENBSD_DEV_CRYPTO |
3ba5d1cf BL |
346 | memcpy(schedule->key,key,sizeof schedule->key); |
347 | schedule->session=NULL; | |
348 | #endif | |
349 | k = &schedule->ks->deslong[0]; | |
edf0bfb5 | 350 | in = &(*key)[0]; |
d02b48c6 RE |
351 | |
352 | c2l(in,c); | |
353 | c2l(in,d); | |
354 | ||
48b83a25 | 355 | /* do PC1 in 47 simple operations :-) |
d02b48c6 RE |
356 | * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) |
357 | * for the inspiration. :-) */ | |
358 | PERM_OP (d,c,t,4,0x0f0f0f0fL); | |
359 | HPERM_OP(c,t,-2,0xcccc0000L); | |
360 | HPERM_OP(d,t,-2,0xcccc0000L); | |
361 | PERM_OP (d,c,t,1,0x55555555L); | |
362 | PERM_OP (c,d,t,8,0x00ff00ffL); | |
363 | PERM_OP (d,c,t,1,0x55555555L); | |
364 | d= (((d&0x000000ffL)<<16L)| (d&0x0000ff00L) | | |
365 | ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L)); | |
366 | c&=0x0fffffffL; | |
367 | ||
368 | for (i=0; i<ITERATIONS; i++) | |
369 | { | |
370 | if (shifts2[i]) | |
371 | { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); } | |
372 | else | |
373 | { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); } | |
374 | c&=0x0fffffffL; | |
375 | d&=0x0fffffffL; | |
376 | /* could be a few less shifts but I am to lazy at this | |
377 | * point in time to investigate */ | |
378 | s= des_skb[0][ (c )&0x3f ]| | |
9e03333f UM |
379 | des_skb[1][((c>> 6L)&0x03)|((c>> 7L)&0x3c)]| |
380 | des_skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]| | |
381 | des_skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) | | |
d02b48c6 RE |
382 | ((c>>22L)&0x38)]; |
383 | t= des_skb[4][ (d )&0x3f ]| | |
384 | des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]| | |
385 | des_skb[6][ (d>>15L)&0x3f ]| | |
386 | des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)]; | |
387 | ||
388 | /* table contained 0213 4657 */ | |
389 | t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL; | |
390 | *(k++)=ROTATE(t2,30)&0xffffffffL; | |
391 | ||
392 | t2=((s>>16L)|(t&0xffff0000L)); | |
393 | *(k++)=ROTATE(t2,26)&0xffffffffL; | |
394 | } | |
d02b48c6 RE |
395 | } |
396 | ||
c2e4f17c | 397 | int DES_key_sched(const_DES_cblock *key, DES_key_schedule *schedule) |
d02b48c6 | 398 | { |
c2e4f17c | 399 | return(DES_set_key(key,schedule)); |
d02b48c6 | 400 | } |
1618bc79 | 401 | /* |
edb93ae6 UM |
402 | #undef des_fixup_key_parity |
403 | void des_fixup_key_parity(des_cblock *key) | |
404 | { | |
405 | des_set_odd_parity(key); | |
406 | } | |
1618bc79 | 407 | */ |