crypto/des/set_key.c

   1 /* crypto/des/set_key.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   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 <openssl/crypto.h>
  67 #include "des_locl.h"
  68
  69 OPENSSL_IMPLEMENT_GLOBAL(int,DES_check_key,0)   /* defaults to false */
  70
  71 static const unsigned char odd_parity[256]={
  72   1,  1,  2,  2,  4,  4,  7,  7,  8,  8, 11, 11, 13, 13, 14, 14,
  73  16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
  74  32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
  75  49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
  76  64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
  77  81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
  78  97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
  79 112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
  80 128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
  81 145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
  82 161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
  83 176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
  84 193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
  85 208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
  86 224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
  87 241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254};
  88
  89 void DES_set_odd_parity(DES_cblock *key)
  90         {
  91         unsigned int i;
  92
  93         for (i=0; i<DES_KEY_SZ; i++)
  94                 (*key)[i]=odd_parity[(*key)[i]];
  95         }
  96
  97 int DES_check_key_parity(const_DES_cblock *key)
  98         {
  99         unsigned int i;
 100
 101         for (i=0; i<DES_KEY_SZ; i++)
 102                 {
 103                 if ((*key)[i] != odd_parity[(*key)[i]])
 104                         return(0);
 105                 }
 106         return(1);
 107         }
 108
 109 /*-
 110  * Weak and semi week keys as take from
 111  * %A D.W. Davies
 112  * %A W.L. Price
 113  * %T Security for Computer Networks
 114  * %I John Wiley & Sons
 115  * %D 1984
 116  * Many thanks to smb@ulysses.att.com (Steven Bellovin) for the reference
 117  * (and actual cblock values).
 118  */
 119 #define NUM_WEAK_KEY    16
 120 static const DES_cblock weak_keys[NUM_WEAK_KEY]={
 121         /* weak keys */
 122         {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
 123         {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
 124         {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
 125         {0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1},
 126         /* semi-weak keys */
 127         {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
 128         {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
 129         {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
 130         {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
 131         {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
 132         {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
 133         {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
 134         {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
 135         {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
 136         {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
 137         {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
 138         {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}};
 139
 140 int DES_is_weak_key(const_DES_cblock *key)
 141         {
 142         int i;
 143
 144         for (i=0; i<NUM_WEAK_KEY; i++)
 145                 /* Added == 0 to comparison, I obviously don't run
 146                  * this section very often :-(, thanks to
 147                  * engineering@MorningStar.Com for the fix
 148                  * eay 93/06/29
 149                  * Another problem, I was comparing only the first 4
 150                  * bytes, 97/03/18 */
 151                 if (memcmp(weak_keys[i],key,sizeof(DES_cblock)) == 0) return(1);
 152         return(0);
 153         }
 154
 155 /*-
 156  * NOW DEFINED IN des_local.h
 157  * See ecb_encrypt.c for a pseudo description of these macros.
 158  * #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
 159  *      (b)^=(t),\
 160  *      (a)=((a)^((t)<<(n))))
 161  */
 162
 163 #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
 164         (a)=(a)^(t)^(t>>(16-(n))))
 165
 166 static const DES_LONG des_skb[8][64]={
 167         {
 168         /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
 169         0x00000000L,0x00000010L,0x20000000L,0x20000010L,
 170         0x00010000L,0x00010010L,0x20010000L,0x20010010L,
 171         0x00000800L,0x00000810L,0x20000800L,0x20000810L,
 172         0x00010800L,0x00010810L,0x20010800L,0x20010810L,
 173         0x00000020L,0x00000030L,0x20000020L,0x20000030L,
 174         0x00010020L,0x00010030L,0x20010020L,0x20010030L,
 175         0x00000820L,0x00000830L,0x20000820L,0x20000830L,
 176         0x00010820L,0x00010830L,0x20010820L,0x20010830L,
 177         0x00080000L,0x00080010L,0x20080000L,0x20080010L,
 178         0x00090000L,0x00090010L,0x20090000L,0x20090010L,
 179         0x00080800L,0x00080810L,0x20080800L,0x20080810L,
 180         0x00090800L,0x00090810L,0x20090800L,0x20090810L,
 181         0x00080020L,0x00080030L,0x20080020L,0x20080030L,
 182         0x00090020L,0x00090030L,0x20090020L,0x20090030L,
 183         0x00080820L,0x00080830L,0x20080820L,0x20080830L,
 184         0x00090820L,0x00090830L,0x20090820L,0x20090830L,
 185         },{
 186         /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
 187         0x00000000L,0x02000000L,0x00002000L,0x02002000L,
 188         0x00200000L,0x02200000L,0x00202000L,0x02202000L,
 189         0x00000004L,0x02000004L,0x00002004L,0x02002004L,
 190         0x00200004L,0x02200004L,0x00202004L,0x02202004L,
 191         0x00000400L,0x02000400L,0x00002400L,0x02002400L,
 192         0x00200400L,0x02200400L,0x00202400L,0x02202400L,
 193         0x00000404L,0x02000404L,0x00002404L,0x02002404L,
 194         0x00200404L,0x02200404L,0x00202404L,0x02202404L,
 195         0x10000000L,0x12000000L,0x10002000L,0x12002000L,
 196         0x10200000L,0x12200000L,0x10202000L,0x12202000L,
 197         0x10000004L,0x12000004L,0x10002004L,0x12002004L,
 198         0x10200004L,0x12200004L,0x10202004L,0x12202004L,
 199         0x10000400L,0x12000400L,0x10002400L,0x12002400L,
 200         0x10200400L,0x12200400L,0x10202400L,0x12202400L,
 201         0x10000404L,0x12000404L,0x10002404L,0x12002404L,
 202         0x10200404L,0x12200404L,0x10202404L,0x12202404L,
 203         },{
 204         /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
 205         0x00000000L,0x00000001L,0x00040000L,0x00040001L,
 206         0x01000000L,0x01000001L,0x01040000L,0x01040001L,
 207         0x00000002L,0x00000003L,0x00040002L,0x00040003L,
 208         0x01000002L,0x01000003L,0x01040002L,0x01040003L,
 209         0x00000200L,0x00000201L,0x00040200L,0x00040201L,
 210         0x01000200L,0x01000201L,0x01040200L,0x01040201L,
 211         0x00000202L,0x00000203L,0x00040202L,0x00040203L,
 212         0x01000202L,0x01000203L,0x01040202L,0x01040203L,
 213         0x08000000L,0x08000001L,0x08040000L,0x08040001L,
 214         0x09000000L,0x09000001L,0x09040000L,0x09040001L,
 215         0x08000002L,0x08000003L,0x08040002L,0x08040003L,
 216         0x09000002L,0x09000003L,0x09040002L,0x09040003L,
 217         0x08000200L,0x08000201L,0x08040200L,0x08040201L,
 218         0x09000200L,0x09000201L,0x09040200L,0x09040201L,
 219         0x08000202L,0x08000203L,0x08040202L,0x08040203L,
 220         0x09000202L,0x09000203L,0x09040202L,0x09040203L,
 221         },{
 222         /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
 223         0x00000000L,0x00100000L,0x00000100L,0x00100100L,
 224         0x00000008L,0x00100008L,0x00000108L,0x00100108L,
 225         0x00001000L,0x00101000L,0x00001100L,0x00101100L,
 226         0x00001008L,0x00101008L,0x00001108L,0x00101108L,
 227         0x04000000L,0x04100000L,0x04000100L,0x04100100L,
 228         0x04000008L,0x04100008L,0x04000108L,0x04100108L,
 229         0x04001000L,0x04101000L,0x04001100L,0x04101100L,
 230         0x04001008L,0x04101008L,0x04001108L,0x04101108L,
 231         0x00020000L,0x00120000L,0x00020100L,0x00120100L,
 232         0x00020008L,0x00120008L,0x00020108L,0x00120108L,
 233         0x00021000L,0x00121000L,0x00021100L,0x00121100L,
 234         0x00021008L,0x00121008L,0x00021108L,0x00121108L,
 235         0x04020000L,0x04120000L,0x04020100L,0x04120100L,
 236         0x04020008L,0x04120008L,0x04020108L,0x04120108L,
 237         0x04021000L,0x04121000L,0x04021100L,0x04121100L,
 238         0x04021008L,0x04121008L,0x04021108L,0x04121108L,
 239         },{
 240         /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
 241         0x00000000L,0x10000000L,0x00010000L,0x10010000L,
 242         0x00000004L,0x10000004L,0x00010004L,0x10010004L,
 243         0x20000000L,0x30000000L,0x20010000L,0x30010000L,
 244         0x20000004L,0x30000004L,0x20010004L,0x30010004L,
 245         0x00100000L,0x10100000L,0x00110000L,0x10110000L,
 246         0x00100004L,0x10100004L,0x00110004L,0x10110004L,
 247         0x20100000L,0x30100000L,0x20110000L,0x30110000L,
 248         0x20100004L,0x30100004L,0x20110004L,0x30110004L,
 249         0x00001000L,0x10001000L,0x00011000L,0x10011000L,
 250         0x00001004L,0x10001004L,0x00011004L,0x10011004L,
 251         0x20001000L,0x30001000L,0x20011000L,0x30011000L,
 252         0x20001004L,0x30001004L,0x20011004L,0x30011004L,
 253         0x00101000L,0x10101000L,0x00111000L,0x10111000L,
 254         0x00101004L,0x10101004L,0x00111004L,0x10111004L,
 255         0x20101000L,0x30101000L,0x20111000L,0x30111000L,
 256         0x20101004L,0x30101004L,0x20111004L,0x30111004L,
 257         },{
 258         /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
 259         0x00000000L,0x08000000L,0x00000008L,0x08000008L,
 260         0x00000400L,0x08000400L,0x00000408L,0x08000408L,
 261         0x00020000L,0x08020000L,0x00020008L,0x08020008L,
 262         0x00020400L,0x08020400L,0x00020408L,0x08020408L,
 263         0x00000001L,0x08000001L,0x00000009L,0x08000009L,
 264         0x00000401L,0x08000401L,0x00000409L,0x08000409L,
 265         0x00020001L,0x08020001L,0x00020009L,0x08020009L,
 266         0x00020401L,0x08020401L,0x00020409L,0x08020409L,
 267         0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
 268         0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
 269         0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
 270         0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
 271         0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
 272         0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
 273         0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
 274         0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
 275         },{
 276         /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
 277         0x00000000L,0x00000100L,0x00080000L,0x00080100L,
 278         0x01000000L,0x01000100L,0x01080000L,0x01080100L,
 279         0x00000010L,0x00000110L,0x00080010L,0x00080110L,
 280         0x01000010L,0x01000110L,0x01080010L,0x01080110L,
 281         0x00200000L,0x00200100L,0x00280000L,0x00280100L,
 282         0x01200000L,0x01200100L,0x01280000L,0x01280100L,
 283         0x00200010L,0x00200110L,0x00280010L,0x00280110L,
 284         0x01200010L,0x01200110L,0x01280010L,0x01280110L,
 285         0x00000200L,0x00000300L,0x00080200L,0x00080300L,
 286         0x01000200L,0x01000300L,0x01080200L,0x01080300L,
 287         0x00000210L,0x00000310L,0x00080210L,0x00080310L,
 288         0x01000210L,0x01000310L,0x01080210L,0x01080310L,
 289         0x00200200L,0x00200300L,0x00280200L,0x00280300L,
 290         0x01200200L,0x01200300L,0x01280200L,0x01280300L,
 291         0x00200210L,0x00200310L,0x00280210L,0x00280310L,
 292         0x01200210L,0x01200310L,0x01280210L,0x01280310L,
 293         },{
 294         /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
 295         0x00000000L,0x04000000L,0x00040000L,0x04040000L,
 296         0x00000002L,0x04000002L,0x00040002L,0x04040002L,
 297         0x00002000L,0x04002000L,0x00042000L,0x04042000L,
 298         0x00002002L,0x04002002L,0x00042002L,0x04042002L,
 299         0x00000020L,0x04000020L,0x00040020L,0x04040020L,
 300         0x00000022L,0x04000022L,0x00040022L,0x04040022L,
 301         0x00002020L,0x04002020L,0x00042020L,0x04042020L,
 302         0x00002022L,0x04002022L,0x00042022L,0x04042022L,
 303         0x00000800L,0x04000800L,0x00040800L,0x04040800L,
 304         0x00000802L,0x04000802L,0x00040802L,0x04040802L,
 305         0x00002800L,0x04002800L,0x00042800L,0x04042800L,
 306         0x00002802L,0x04002802L,0x00042802L,0x04042802L,
 307         0x00000820L,0x04000820L,0x00040820L,0x04040820L,
 308         0x00000822L,0x04000822L,0x00040822L,0x04040822L,
 309         0x00002820L,0x04002820L,0x00042820L,0x04042820L,
 310         0x00002822L,0x04002822L,0x00042822L,0x04042822L,
 311         }};
 312
 313 int DES_set_key(const_DES_cblock *key, DES_key_schedule *schedule)
 314         {
 315         if (DES_check_key)
 316                 {
 317                 return DES_set_key_checked(key, schedule);
 318                 }
 319         else
 320                 {
 321                 DES_set_key_unchecked(key, schedule);
 322                 return 0;
 323                 }
 324         }
 325
 326 /*-
 327  * return 0 if key parity is odd (correct),
 328  * return -1 if key parity error,
 329  * return -2 if illegal weak key.
 330  */
 331 int DES_set_key_checked(const_DES_cblock *key, DES_key_schedule *schedule)
 332         {
 333         if (!DES_check_key_parity(key))
 334                 return(-1);
 335         if (DES_is_weak_key(key))
 336                 return(-2);
 337         DES_set_key_unchecked(key, schedule);
 338         return 0;
 339         }
 340
 341 void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule)
 342         {
 343         static const int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
 344         register DES_LONG c,d,t,s,t2;
 345         register const unsigned char *in;
 346         register DES_LONG *k;
 347         register int i;
 348
 349 #ifdef OPENBSD_DEV_CRYPTO
 350         memcpy(schedule->key,key,sizeof schedule->key);
 351         schedule->session=NULL;
 352 #endif
 353         k = &schedule->ks->deslong[0];
 354         in = &(*key)[0];
 355
 356         c2l(in,c);
 357         c2l(in,d);
 358
 359         /* do PC1 in 47 simple operations :-)
 360          * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
 361          * for the inspiration. :-) */
 362         PERM_OP (d,c,t,4,0x0f0f0f0fL);
 363         HPERM_OP(c,t,-2,0xcccc0000L);
 364         HPERM_OP(d,t,-2,0xcccc0000L);
 365         PERM_OP (d,c,t,1,0x55555555L);
 366         PERM_OP (c,d,t,8,0x00ff00ffL);
 367         PERM_OP (d,c,t,1,0x55555555L);
 368         d=      (((d&0x000000ffL)<<16L)| (d&0x0000ff00L)     |
 369                  ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
 370         c&=0x0fffffffL;
 371
 372         for (i=0; i<ITERATIONS; i++)
 373                 {
 374                 if (shifts2[i])
 375                         { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
 376                 else
 377                         { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
 378                 c&=0x0fffffffL;
 379                 d&=0x0fffffffL;
 380                 /* could be a few less shifts but I am to lazy at this
 381                  * point in time to investigate */
 382                 s=      des_skb[0][ (c    )&0x3f                ]|
 383                         des_skb[1][((c>> 6L)&0x03)|((c>> 7L)&0x3c)]|
 384                         des_skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]|
 385                         des_skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) |
 386                                                   ((c>>22L)&0x38)];
 387                 t=      des_skb[4][ (d    )&0x3f                ]|
 388                         des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
 389                         des_skb[6][ (d>>15L)&0x3f                ]|
 390                         des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];
 391
 392                 /* table contained 0213 4657 */
 393                 t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
 394                 *(k++)=ROTATE(t2,30)&0xffffffffL;
 395
 396                 t2=((s>>16L)|(t&0xffff0000L));
 397                 *(k++)=ROTATE(t2,26)&0xffffffffL;
 398                 }
 399         }
 400
 401 int DES_key_sched(const_DES_cblock *key, DES_key_schedule *schedule)
 402         {
 403         return(DES_set_key(key,schedule));
 404         }
 405 /*-
 406 #undef des_fixup_key_parity
 407 void des_fixup_key_parity(des_cblock *key)
 408         {
 409         des_set_odd_parity(key);
 410         }
 411 */