1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/des/set_key.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,448 @@
1.4 +/* crypto/des/set_key.c */
1.5 +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
1.6 + * All rights reserved.
1.7 + *
1.8 + * This package is an SSL implementation written
1.9 + * by Eric Young (eay@cryptsoft.com).
1.10 + * The implementation was written so as to conform with Netscapes SSL.
1.11 + *
1.12 + * This library is free for commercial and non-commercial use as long as
1.13 + * the following conditions are aheared to. The following conditions
1.14 + * apply to all code found in this distribution, be it the RC4, RSA,
1.15 + * lhash, DES, etc., code; not just the SSL code. The SSL documentation
1.16 + * included with this distribution is covered by the same copyright terms
1.17 + * except that the holder is Tim Hudson (tjh@cryptsoft.com).
1.18 + *
1.19 + * Copyright remains Eric Young's, and as such any Copyright notices in
1.20 + * the code are not to be removed.
1.21 + * If this package is used in a product, Eric Young should be given attribution
1.22 + * as the author of the parts of the library used.
1.23 + * This can be in the form of a textual message at program startup or
1.24 + * in documentation (online or textual) provided with the package.
1.25 + *
1.26 + * Redistribution and use in source and binary forms, with or without
1.27 + * modification, are permitted provided that the following conditions
1.28 + * are met:
1.29 + * 1. Redistributions of source code must retain the copyright
1.30 + * notice, this list of conditions and the following disclaimer.
1.31 + * 2. Redistributions in binary form must reproduce the above copyright
1.32 + * notice, this list of conditions and the following disclaimer in the
1.33 + * documentation and/or other materials provided with the distribution.
1.34 + * 3. All advertising materials mentioning features or use of this software
1.35 + * must display the following acknowledgement:
1.36 + * "This product includes cryptographic software written by
1.37 + * Eric Young (eay@cryptsoft.com)"
1.38 + * The word 'cryptographic' can be left out if the rouines from the library
1.39 + * being used are not cryptographic related :-).
1.40 + * 4. If you include any Windows specific code (or a derivative thereof) from
1.41 + * the apps directory (application code) you must include an acknowledgement:
1.42 + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
1.43 + *
1.44 + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
1.45 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.46 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.47 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1.48 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.49 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.50 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.51 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.52 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.53 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.54 + * SUCH DAMAGE.
1.55 + *
1.56 + * The licence and distribution terms for any publically available version or
1.57 + * derivative of this code cannot be changed. i.e. this code cannot simply be
1.58 + * copied and put under another distribution licence
1.59 + * [including the GNU Public Licence.]
1.60 + */
1.61 + /*
1.62 + © Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
1.63 + */
1.64 +
1.65 +
1.66 +
1.67 +/* set_key.c v 1.4 eay 24/9/91
1.68 + * 1.4 Speed up by 400% :-)
1.69 + * 1.3 added register declarations.
1.70 + * 1.2 unrolled make_key_sched a bit more
1.71 + * 1.1 added norm_expand_bits
1.72 + * 1.0 First working version
1.73 + */
1.74 +#include "des_locl.h"
1.75 +#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
1.76 +#include "libcrypto_wsd_macros.h"
1.77 +#include "libcrypto_wsd.h"
1.78 +#endif
1.79 +
1.80 +#ifndef EMULATOR
1.81 +OPENSSL_IMPLEMENT_GLOBAL(int,DES_check_key); /* defaults to false */
1.82 +#else
1.83 +#define DES_check_key libcrypto_ImpurePtr()->_shadow_DES_check_key
1.84 +#endif
1.85 +static const unsigned char odd_parity[256]={
1.86 + 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14,
1.87 + 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
1.88 + 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
1.89 + 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
1.90 + 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
1.91 + 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
1.92 + 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
1.93 +112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
1.94 +128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
1.95 +145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
1.96 +161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
1.97 +176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
1.98 +193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
1.99 +208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
1.100 +224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
1.101 +241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254};
1.102 +
1.103 +EXPORT_C void DES_set_odd_parity(DES_cblock *key)
1.104 + {
1.105 + unsigned int i;
1.106 +
1.107 + for (i=0; i<DES_KEY_SZ; i++)
1.108 + (*key)[i]=odd_parity[(*key)[i]];
1.109 + }
1.110 +
1.111 +EXPORT_C int DES_check_key_parity(const_DES_cblock *key)
1.112 + {
1.113 + unsigned int i;
1.114 +
1.115 + for (i=0; i<DES_KEY_SZ; i++)
1.116 + {
1.117 + if ((*key)[i] != odd_parity[(*key)[i]])
1.118 + return(0);
1.119 + }
1.120 + return(1);
1.121 + }
1.122 +
1.123 +/* Weak and semi week keys as take from
1.124 + * %A D.W. Davies
1.125 + * %A W.L. Price
1.126 + * %T Security for Computer Networks
1.127 + * %I John Wiley & Sons
1.128 + * %D 1984
1.129 + * Many thanks to smb@ulysses.att.com (Steven Bellovin) for the reference
1.130 + * (and actual cblock values).
1.131 + */
1.132 +#define NUM_WEAK_KEY 16
1.133 +#ifndef EMULATOR
1.134 +static DES_cblock weak_keys[NUM_WEAK_KEY]={
1.135 + /* weak keys */
1.136 + {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
1.137 + {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
1.138 + {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
1.139 + {0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1},
1.140 + /* semi-weak keys */
1.141 + {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
1.142 + {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
1.143 + {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
1.144 + {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
1.145 + {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
1.146 + {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
1.147 + {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
1.148 + {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
1.149 + {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
1.150 + {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
1.151 + {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
1.152 + {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}};
1.153 +#else
1.154 +const DES_cblock temp_weak_keys[NUM_WEAK_KEY]={
1.155 + /* weak keys */
1.156 + {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
1.157 + {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
1.158 + {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
1.159 + {0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1},
1.160 + /* semi-weak keys */
1.161 + {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
1.162 + {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
1.163 + {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
1.164 + {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
1.165 + {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
1.166 + {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
1.167 + {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
1.168 + {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
1.169 + {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
1.170 + {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
1.171 + {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
1.172 + {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}};
1.173 +
1.174 +GET_STATIC_ARRAY_FROM_TLS(weak_keys,set_key_c,DES_cblock)
1.175 +#define weak_keys (GET_WSD_VAR_NAME(weak_keys,set_key_c, s)())
1.176 +#endif
1.177 +
1.178 +EXPORT_C int DES_is_weak_key(const_DES_cblock *key)
1.179 + {
1.180 + int i;
1.181 +
1.182 + for (i=0; i<NUM_WEAK_KEY; i++)
1.183 + /* Added == 0 to comparison, I obviously don't run
1.184 + * this section very often :-(, thanks to
1.185 + * engineering@MorningStar.Com for the fix
1.186 + * eay 93/06/29
1.187 + * Another problem, I was comparing only the first 4
1.188 + * bytes, 97/03/18 */
1.189 + if (memcmp(weak_keys[i],key,sizeof(DES_cblock)) == 0) return(1);
1.190 + return(0);
1.191 + }
1.192 +
1.193 +/* NOW DEFINED IN des_local.h
1.194 + * See ecb_encrypt.c for a pseudo description of these macros.
1.195 + * #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
1.196 + * (b)^=(t),\
1.197 + * (a)=((a)^((t)<<(n))))
1.198 + */
1.199 +
1.200 +#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
1.201 + (a)=(a)^(t)^(t>>(16-(n))))
1.202 +
1.203 +static const DES_LONG des_skb[8][64]={
1.204 + {
1.205 + /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
1.206 + 0x00000000L,0x00000010L,0x20000000L,0x20000010L,
1.207 + 0x00010000L,0x00010010L,0x20010000L,0x20010010L,
1.208 + 0x00000800L,0x00000810L,0x20000800L,0x20000810L,
1.209 + 0x00010800L,0x00010810L,0x20010800L,0x20010810L,
1.210 + 0x00000020L,0x00000030L,0x20000020L,0x20000030L,
1.211 + 0x00010020L,0x00010030L,0x20010020L,0x20010030L,
1.212 + 0x00000820L,0x00000830L,0x20000820L,0x20000830L,
1.213 + 0x00010820L,0x00010830L,0x20010820L,0x20010830L,
1.214 + 0x00080000L,0x00080010L,0x20080000L,0x20080010L,
1.215 + 0x00090000L,0x00090010L,0x20090000L,0x20090010L,
1.216 + 0x00080800L,0x00080810L,0x20080800L,0x20080810L,
1.217 + 0x00090800L,0x00090810L,0x20090800L,0x20090810L,
1.218 + 0x00080020L,0x00080030L,0x20080020L,0x20080030L,
1.219 + 0x00090020L,0x00090030L,0x20090020L,0x20090030L,
1.220 + 0x00080820L,0x00080830L,0x20080820L,0x20080830L,
1.221 + 0x00090820L,0x00090830L,0x20090820L,0x20090830L,
1.222 + },{
1.223 + /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
1.224 + 0x00000000L,0x02000000L,0x00002000L,0x02002000L,
1.225 + 0x00200000L,0x02200000L,0x00202000L,0x02202000L,
1.226 + 0x00000004L,0x02000004L,0x00002004L,0x02002004L,
1.227 + 0x00200004L,0x02200004L,0x00202004L,0x02202004L,
1.228 + 0x00000400L,0x02000400L,0x00002400L,0x02002400L,
1.229 + 0x00200400L,0x02200400L,0x00202400L,0x02202400L,
1.230 + 0x00000404L,0x02000404L,0x00002404L,0x02002404L,
1.231 + 0x00200404L,0x02200404L,0x00202404L,0x02202404L,
1.232 + 0x10000000L,0x12000000L,0x10002000L,0x12002000L,
1.233 + 0x10200000L,0x12200000L,0x10202000L,0x12202000L,
1.234 + 0x10000004L,0x12000004L,0x10002004L,0x12002004L,
1.235 + 0x10200004L,0x12200004L,0x10202004L,0x12202004L,
1.236 + 0x10000400L,0x12000400L,0x10002400L,0x12002400L,
1.237 + 0x10200400L,0x12200400L,0x10202400L,0x12202400L,
1.238 + 0x10000404L,0x12000404L,0x10002404L,0x12002404L,
1.239 + 0x10200404L,0x12200404L,0x10202404L,0x12202404L,
1.240 + },{
1.241 + /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
1.242 + 0x00000000L,0x00000001L,0x00040000L,0x00040001L,
1.243 + 0x01000000L,0x01000001L,0x01040000L,0x01040001L,
1.244 + 0x00000002L,0x00000003L,0x00040002L,0x00040003L,
1.245 + 0x01000002L,0x01000003L,0x01040002L,0x01040003L,
1.246 + 0x00000200L,0x00000201L,0x00040200L,0x00040201L,
1.247 + 0x01000200L,0x01000201L,0x01040200L,0x01040201L,
1.248 + 0x00000202L,0x00000203L,0x00040202L,0x00040203L,
1.249 + 0x01000202L,0x01000203L,0x01040202L,0x01040203L,
1.250 + 0x08000000L,0x08000001L,0x08040000L,0x08040001L,
1.251 + 0x09000000L,0x09000001L,0x09040000L,0x09040001L,
1.252 + 0x08000002L,0x08000003L,0x08040002L,0x08040003L,
1.253 + 0x09000002L,0x09000003L,0x09040002L,0x09040003L,
1.254 + 0x08000200L,0x08000201L,0x08040200L,0x08040201L,
1.255 + 0x09000200L,0x09000201L,0x09040200L,0x09040201L,
1.256 + 0x08000202L,0x08000203L,0x08040202L,0x08040203L,
1.257 + 0x09000202L,0x09000203L,0x09040202L,0x09040203L,
1.258 + },{
1.259 + /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
1.260 + 0x00000000L,0x00100000L,0x00000100L,0x00100100L,
1.261 + 0x00000008L,0x00100008L,0x00000108L,0x00100108L,
1.262 + 0x00001000L,0x00101000L,0x00001100L,0x00101100L,
1.263 + 0x00001008L,0x00101008L,0x00001108L,0x00101108L,
1.264 + 0x04000000L,0x04100000L,0x04000100L,0x04100100L,
1.265 + 0x04000008L,0x04100008L,0x04000108L,0x04100108L,
1.266 + 0x04001000L,0x04101000L,0x04001100L,0x04101100L,
1.267 + 0x04001008L,0x04101008L,0x04001108L,0x04101108L,
1.268 + 0x00020000L,0x00120000L,0x00020100L,0x00120100L,
1.269 + 0x00020008L,0x00120008L,0x00020108L,0x00120108L,
1.270 + 0x00021000L,0x00121000L,0x00021100L,0x00121100L,
1.271 + 0x00021008L,0x00121008L,0x00021108L,0x00121108L,
1.272 + 0x04020000L,0x04120000L,0x04020100L,0x04120100L,
1.273 + 0x04020008L,0x04120008L,0x04020108L,0x04120108L,
1.274 + 0x04021000L,0x04121000L,0x04021100L,0x04121100L,
1.275 + 0x04021008L,0x04121008L,0x04021108L,0x04121108L,
1.276 + },{
1.277 + /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
1.278 + 0x00000000L,0x10000000L,0x00010000L,0x10010000L,
1.279 + 0x00000004L,0x10000004L,0x00010004L,0x10010004L,
1.280 + 0x20000000L,0x30000000L,0x20010000L,0x30010000L,
1.281 + 0x20000004L,0x30000004L,0x20010004L,0x30010004L,
1.282 + 0x00100000L,0x10100000L,0x00110000L,0x10110000L,
1.283 + 0x00100004L,0x10100004L,0x00110004L,0x10110004L,
1.284 + 0x20100000L,0x30100000L,0x20110000L,0x30110000L,
1.285 + 0x20100004L,0x30100004L,0x20110004L,0x30110004L,
1.286 + 0x00001000L,0x10001000L,0x00011000L,0x10011000L,
1.287 + 0x00001004L,0x10001004L,0x00011004L,0x10011004L,
1.288 + 0x20001000L,0x30001000L,0x20011000L,0x30011000L,
1.289 + 0x20001004L,0x30001004L,0x20011004L,0x30011004L,
1.290 + 0x00101000L,0x10101000L,0x00111000L,0x10111000L,
1.291 + 0x00101004L,0x10101004L,0x00111004L,0x10111004L,
1.292 + 0x20101000L,0x30101000L,0x20111000L,0x30111000L,
1.293 + 0x20101004L,0x30101004L,0x20111004L,0x30111004L,
1.294 + },{
1.295 + /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
1.296 + 0x00000000L,0x08000000L,0x00000008L,0x08000008L,
1.297 + 0x00000400L,0x08000400L,0x00000408L,0x08000408L,
1.298 + 0x00020000L,0x08020000L,0x00020008L,0x08020008L,
1.299 + 0x00020400L,0x08020400L,0x00020408L,0x08020408L,
1.300 + 0x00000001L,0x08000001L,0x00000009L,0x08000009L,
1.301 + 0x00000401L,0x08000401L,0x00000409L,0x08000409L,
1.302 + 0x00020001L,0x08020001L,0x00020009L,0x08020009L,
1.303 + 0x00020401L,0x08020401L,0x00020409L,0x08020409L,
1.304 + 0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
1.305 + 0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
1.306 + 0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
1.307 + 0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
1.308 + 0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
1.309 + 0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
1.310 + 0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
1.311 + 0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
1.312 + },{
1.313 + /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
1.314 + 0x00000000L,0x00000100L,0x00080000L,0x00080100L,
1.315 + 0x01000000L,0x01000100L,0x01080000L,0x01080100L,
1.316 + 0x00000010L,0x00000110L,0x00080010L,0x00080110L,
1.317 + 0x01000010L,0x01000110L,0x01080010L,0x01080110L,
1.318 + 0x00200000L,0x00200100L,0x00280000L,0x00280100L,
1.319 + 0x01200000L,0x01200100L,0x01280000L,0x01280100L,
1.320 + 0x00200010L,0x00200110L,0x00280010L,0x00280110L,
1.321 + 0x01200010L,0x01200110L,0x01280010L,0x01280110L,
1.322 + 0x00000200L,0x00000300L,0x00080200L,0x00080300L,
1.323 + 0x01000200L,0x01000300L,0x01080200L,0x01080300L,
1.324 + 0x00000210L,0x00000310L,0x00080210L,0x00080310L,
1.325 + 0x01000210L,0x01000310L,0x01080210L,0x01080310L,
1.326 + 0x00200200L,0x00200300L,0x00280200L,0x00280300L,
1.327 + 0x01200200L,0x01200300L,0x01280200L,0x01280300L,
1.328 + 0x00200210L,0x00200310L,0x00280210L,0x00280310L,
1.329 + 0x01200210L,0x01200310L,0x01280210L,0x01280310L,
1.330 + },{
1.331 + /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
1.332 + 0x00000000L,0x04000000L,0x00040000L,0x04040000L,
1.333 + 0x00000002L,0x04000002L,0x00040002L,0x04040002L,
1.334 + 0x00002000L,0x04002000L,0x00042000L,0x04042000L,
1.335 + 0x00002002L,0x04002002L,0x00042002L,0x04042002L,
1.336 + 0x00000020L,0x04000020L,0x00040020L,0x04040020L,
1.337 + 0x00000022L,0x04000022L,0x00040022L,0x04040022L,
1.338 + 0x00002020L,0x04002020L,0x00042020L,0x04042020L,
1.339 + 0x00002022L,0x04002022L,0x00042022L,0x04042022L,
1.340 + 0x00000800L,0x04000800L,0x00040800L,0x04040800L,
1.341 + 0x00000802L,0x04000802L,0x00040802L,0x04040802L,
1.342 + 0x00002800L,0x04002800L,0x00042800L,0x04042800L,
1.343 + 0x00002802L,0x04002802L,0x00042802L,0x04042802L,
1.344 + 0x00000820L,0x04000820L,0x00040820L,0x04040820L,
1.345 + 0x00000822L,0x04000822L,0x00040822L,0x04040822L,
1.346 + 0x00002820L,0x04002820L,0x00042820L,0x04042820L,
1.347 + 0x00002822L,0x04002822L,0x00042822L,0x04042822L,
1.348 + }};
1.349 +
1.350 +EXPORT_C int DES_set_key(const_DES_cblock *key, DES_key_schedule *schedule)
1.351 + {
1.352 + if (DES_check_key)
1.353 + {
1.354 + return DES_set_key_checked(key, schedule);
1.355 + }
1.356 + else
1.357 + {
1.358 + DES_set_key_unchecked(key, schedule);
1.359 + return 0;
1.360 + }
1.361 + }
1.362 +
1.363 +/* return 0 if key parity is odd (correct),
1.364 + * return -1 if key parity error,
1.365 + * return -2 if illegal weak key.
1.366 + */
1.367 +EXPORT_C int DES_set_key_checked(const_DES_cblock *key, DES_key_schedule *schedule)
1.368 + {
1.369 + if (!DES_check_key_parity(key))
1.370 + return(-1);
1.371 + if (DES_is_weak_key(key))
1.372 + return(-2);
1.373 + DES_set_key_unchecked(key, schedule);
1.374 + return 0;
1.375 + }
1.376 +
1.377 +EXPORT_C void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule)
1.378 + {
1.379 +#ifndef EMULATOR
1.380 + static int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
1.381 +#else
1.382 + static const int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
1.383 +#endif
1.384 + register DES_LONG c,d,t,s,t2;
1.385 + register const unsigned char *in;
1.386 + register DES_LONG *k;
1.387 + register int i;
1.388 +
1.389 +#ifdef OPENBSD_DEV_CRYPTO
1.390 + memcpy(schedule->key,key,sizeof schedule->key);
1.391 + schedule->session=NULL;
1.392 +#endif
1.393 + k = &schedule->ks->deslong[0];
1.394 + in = &(*key)[0];
1.395 +
1.396 + c2l(in,c);
1.397 + c2l(in,d);
1.398 +
1.399 + /* do PC1 in 47 simple operations :-)
1.400 + * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
1.401 + * for the inspiration. :-) */
1.402 + PERM_OP (d,c,t,4,0x0f0f0f0fL);
1.403 + HPERM_OP(c,t,-2,0xcccc0000L);
1.404 + HPERM_OP(d,t,-2,0xcccc0000L);
1.405 + PERM_OP (d,c,t,1,0x55555555L);
1.406 + PERM_OP (c,d,t,8,0x00ff00ffL);
1.407 + PERM_OP (d,c,t,1,0x55555555L);
1.408 + d= (((d&0x000000ffL)<<16L)| (d&0x0000ff00L) |
1.409 + ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
1.410 + c&=0x0fffffffL;
1.411 +
1.412 + for (i=0; i<ITERATIONS; i++)
1.413 + {
1.414 + if (shifts2[i])
1.415 + { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
1.416 + else
1.417 + { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
1.418 + c&=0x0fffffffL;
1.419 + d&=0x0fffffffL;
1.420 + /* could be a few less shifts but I am to lazy at this
1.421 + * point in time to investigate */
1.422 + s= des_skb[0][ (c )&0x3f ]|
1.423 + des_skb[1][((c>> 6L)&0x03)|((c>> 7L)&0x3c)]|
1.424 + des_skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]|
1.425 + des_skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) |
1.426 + ((c>>22L)&0x38)];
1.427 + t= des_skb[4][ (d )&0x3f ]|
1.428 + des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
1.429 + des_skb[6][ (d>>15L)&0x3f ]|
1.430 + des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];
1.431 +
1.432 + /* table contained 0213 4657 */
1.433 + t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
1.434 + *(k++)=ROTATE(t2,30)&0xffffffffL;
1.435 +
1.436 + t2=((s>>16L)|(t&0xffff0000L));
1.437 + *(k++)=ROTATE(t2,26)&0xffffffffL;
1.438 + }
1.439 + }
1.440 +
1.441 +EXPORT_C int DES_key_sched(const_DES_cblock *key, DES_key_schedule *schedule)
1.442 + {
1.443 + return(DES_set_key(key,schedule));
1.444 + }
1.445 +/*
1.446 +#undef des_fixup_key_parity
1.447 +void des_fixup_key_parity(des_cblock *key)
1.448 + {
1.449 + des_set_odd_parity(key);
1.450 + }
1.451 +*/