62dc5aad06
functions on platform were that's the best way to handle exporting global variables in shared libraries. To enable this functionality, one must configure with "EXPORT_VAR_AS_FN" or defined the C macro "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter is normally done by Configure or something similar). To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL in the source file (foo.c) like this: OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; OPENSSL_IMPLEMENT_GLOBAL(double,bar); To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: OPENSSL_DECLARE_GLOBAL(int,foo); #define foo OPENSSL_GLOBAL_REF(foo) OPENSSL_DECLARE_GLOBAL(double,bar); #define bar OPENSSL_GLOBAL_REF(bar) The #defines are very important, and therefore so is including the header file everywere where the defined globals are used. The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition of ASN.1 items, but that structure is a bt different. The largest change is in util/mkdef.pl which has been enhanced with better and easier to understand logic to choose which symbols should go into the Windows .def files as well as a number of fixes and code cleanup (among others, algorithm keywords are now sorted lexicographically to avoid constant rewrites).
403 lines
16 KiB
C
403 lines
16 KiB
C
/* crypto/des/set_key.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
|
|
/* set_key.c v 1.4 eay 24/9/91
|
|
* 1.4 Speed up by 400% :-)
|
|
* 1.3 added register declarations.
|
|
* 1.2 unrolled make_key_sched a bit more
|
|
* 1.1 added norm_expand_bits
|
|
* 1.0 First working version
|
|
*/
|
|
#include "des_locl.h"
|
|
|
|
OPENSSL_IMPLEMENT_GLOBAL(int,des_check_key); /* defaults to false */
|
|
|
|
static const unsigned char odd_parity[256]={
|
|
1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14,
|
|
16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
|
|
32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
|
|
49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
|
|
64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
|
|
81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
|
|
97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
|
|
112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
|
|
128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
|
|
145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
|
|
161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
|
|
176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
|
|
193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
|
|
208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
|
|
224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
|
|
241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254};
|
|
|
|
void des_set_odd_parity(des_cblock *key)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<DES_KEY_SZ; i++)
|
|
(*key)[i]=odd_parity[(*key)[i]];
|
|
}
|
|
|
|
int des_check_key_parity(const_des_cblock *key)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<DES_KEY_SZ; i++)
|
|
{
|
|
if ((*key)[i] != odd_parity[(*key)[i]])
|
|
return(0);
|
|
}
|
|
return(1);
|
|
}
|
|
|
|
/* Weak and semi week keys as take from
|
|
* %A D.W. Davies
|
|
* %A W.L. Price
|
|
* %T Security for Computer Networks
|
|
* %I John Wiley & Sons
|
|
* %D 1984
|
|
* Many thanks to smb@ulysses.att.com (Steven Bellovin) for the reference
|
|
* (and actual cblock values).
|
|
*/
|
|
#define NUM_WEAK_KEY 16
|
|
static des_cblock weak_keys[NUM_WEAK_KEY]={
|
|
/* weak keys */
|
|
{0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
|
|
{0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
|
|
{0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
|
|
{0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1},
|
|
/* semi-weak keys */
|
|
{0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
|
|
{0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
|
|
{0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
|
|
{0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
|
|
{0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
|
|
{0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
|
|
{0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
|
|
{0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
|
|
{0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
|
|
{0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
|
|
{0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
|
|
{0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}};
|
|
|
|
int des_is_weak_key(const_des_cblock *key)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<NUM_WEAK_KEY; i++)
|
|
/* Added == 0 to comparison, I obviously don't run
|
|
* this section very often :-(, thanks to
|
|
* engineering@MorningStar.Com for the fix
|
|
* eay 93/06/29
|
|
* Another problem, I was comparing only the first 4
|
|
* bytes, 97/03/18 */
|
|
if (memcmp(weak_keys[i],key,sizeof(des_cblock)) == 0) return(1);
|
|
return(0);
|
|
}
|
|
|
|
/* NOW DEFINED IN des_local.h
|
|
* See ecb_encrypt.c for a pseudo description of these macros.
|
|
* #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
|
|
* (b)^=(t),\
|
|
* (a)=((a)^((t)<<(n))))
|
|
*/
|
|
|
|
#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
|
|
(a)=(a)^(t)^(t>>(16-(n))))
|
|
|
|
static const DES_LONG des_skb[8][64]={
|
|
{
|
|
/* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
|
|
0x00000000L,0x00000010L,0x20000000L,0x20000010L,
|
|
0x00010000L,0x00010010L,0x20010000L,0x20010010L,
|
|
0x00000800L,0x00000810L,0x20000800L,0x20000810L,
|
|
0x00010800L,0x00010810L,0x20010800L,0x20010810L,
|
|
0x00000020L,0x00000030L,0x20000020L,0x20000030L,
|
|
0x00010020L,0x00010030L,0x20010020L,0x20010030L,
|
|
0x00000820L,0x00000830L,0x20000820L,0x20000830L,
|
|
0x00010820L,0x00010830L,0x20010820L,0x20010830L,
|
|
0x00080000L,0x00080010L,0x20080000L,0x20080010L,
|
|
0x00090000L,0x00090010L,0x20090000L,0x20090010L,
|
|
0x00080800L,0x00080810L,0x20080800L,0x20080810L,
|
|
0x00090800L,0x00090810L,0x20090800L,0x20090810L,
|
|
0x00080020L,0x00080030L,0x20080020L,0x20080030L,
|
|
0x00090020L,0x00090030L,0x20090020L,0x20090030L,
|
|
0x00080820L,0x00080830L,0x20080820L,0x20080830L,
|
|
0x00090820L,0x00090830L,0x20090820L,0x20090830L,
|
|
},{
|
|
/* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
|
|
0x00000000L,0x02000000L,0x00002000L,0x02002000L,
|
|
0x00200000L,0x02200000L,0x00202000L,0x02202000L,
|
|
0x00000004L,0x02000004L,0x00002004L,0x02002004L,
|
|
0x00200004L,0x02200004L,0x00202004L,0x02202004L,
|
|
0x00000400L,0x02000400L,0x00002400L,0x02002400L,
|
|
0x00200400L,0x02200400L,0x00202400L,0x02202400L,
|
|
0x00000404L,0x02000404L,0x00002404L,0x02002404L,
|
|
0x00200404L,0x02200404L,0x00202404L,0x02202404L,
|
|
0x10000000L,0x12000000L,0x10002000L,0x12002000L,
|
|
0x10200000L,0x12200000L,0x10202000L,0x12202000L,
|
|
0x10000004L,0x12000004L,0x10002004L,0x12002004L,
|
|
0x10200004L,0x12200004L,0x10202004L,0x12202004L,
|
|
0x10000400L,0x12000400L,0x10002400L,0x12002400L,
|
|
0x10200400L,0x12200400L,0x10202400L,0x12202400L,
|
|
0x10000404L,0x12000404L,0x10002404L,0x12002404L,
|
|
0x10200404L,0x12200404L,0x10202404L,0x12202404L,
|
|
},{
|
|
/* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
|
|
0x00000000L,0x00000001L,0x00040000L,0x00040001L,
|
|
0x01000000L,0x01000001L,0x01040000L,0x01040001L,
|
|
0x00000002L,0x00000003L,0x00040002L,0x00040003L,
|
|
0x01000002L,0x01000003L,0x01040002L,0x01040003L,
|
|
0x00000200L,0x00000201L,0x00040200L,0x00040201L,
|
|
0x01000200L,0x01000201L,0x01040200L,0x01040201L,
|
|
0x00000202L,0x00000203L,0x00040202L,0x00040203L,
|
|
0x01000202L,0x01000203L,0x01040202L,0x01040203L,
|
|
0x08000000L,0x08000001L,0x08040000L,0x08040001L,
|
|
0x09000000L,0x09000001L,0x09040000L,0x09040001L,
|
|
0x08000002L,0x08000003L,0x08040002L,0x08040003L,
|
|
0x09000002L,0x09000003L,0x09040002L,0x09040003L,
|
|
0x08000200L,0x08000201L,0x08040200L,0x08040201L,
|
|
0x09000200L,0x09000201L,0x09040200L,0x09040201L,
|
|
0x08000202L,0x08000203L,0x08040202L,0x08040203L,
|
|
0x09000202L,0x09000203L,0x09040202L,0x09040203L,
|
|
},{
|
|
/* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
|
|
0x00000000L,0x00100000L,0x00000100L,0x00100100L,
|
|
0x00000008L,0x00100008L,0x00000108L,0x00100108L,
|
|
0x00001000L,0x00101000L,0x00001100L,0x00101100L,
|
|
0x00001008L,0x00101008L,0x00001108L,0x00101108L,
|
|
0x04000000L,0x04100000L,0x04000100L,0x04100100L,
|
|
0x04000008L,0x04100008L,0x04000108L,0x04100108L,
|
|
0x04001000L,0x04101000L,0x04001100L,0x04101100L,
|
|
0x04001008L,0x04101008L,0x04001108L,0x04101108L,
|
|
0x00020000L,0x00120000L,0x00020100L,0x00120100L,
|
|
0x00020008L,0x00120008L,0x00020108L,0x00120108L,
|
|
0x00021000L,0x00121000L,0x00021100L,0x00121100L,
|
|
0x00021008L,0x00121008L,0x00021108L,0x00121108L,
|
|
0x04020000L,0x04120000L,0x04020100L,0x04120100L,
|
|
0x04020008L,0x04120008L,0x04020108L,0x04120108L,
|
|
0x04021000L,0x04121000L,0x04021100L,0x04121100L,
|
|
0x04021008L,0x04121008L,0x04021108L,0x04121108L,
|
|
},{
|
|
/* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
|
|
0x00000000L,0x10000000L,0x00010000L,0x10010000L,
|
|
0x00000004L,0x10000004L,0x00010004L,0x10010004L,
|
|
0x20000000L,0x30000000L,0x20010000L,0x30010000L,
|
|
0x20000004L,0x30000004L,0x20010004L,0x30010004L,
|
|
0x00100000L,0x10100000L,0x00110000L,0x10110000L,
|
|
0x00100004L,0x10100004L,0x00110004L,0x10110004L,
|
|
0x20100000L,0x30100000L,0x20110000L,0x30110000L,
|
|
0x20100004L,0x30100004L,0x20110004L,0x30110004L,
|
|
0x00001000L,0x10001000L,0x00011000L,0x10011000L,
|
|
0x00001004L,0x10001004L,0x00011004L,0x10011004L,
|
|
0x20001000L,0x30001000L,0x20011000L,0x30011000L,
|
|
0x20001004L,0x30001004L,0x20011004L,0x30011004L,
|
|
0x00101000L,0x10101000L,0x00111000L,0x10111000L,
|
|
0x00101004L,0x10101004L,0x00111004L,0x10111004L,
|
|
0x20101000L,0x30101000L,0x20111000L,0x30111000L,
|
|
0x20101004L,0x30101004L,0x20111004L,0x30111004L,
|
|
},{
|
|
/* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
|
|
0x00000000L,0x08000000L,0x00000008L,0x08000008L,
|
|
0x00000400L,0x08000400L,0x00000408L,0x08000408L,
|
|
0x00020000L,0x08020000L,0x00020008L,0x08020008L,
|
|
0x00020400L,0x08020400L,0x00020408L,0x08020408L,
|
|
0x00000001L,0x08000001L,0x00000009L,0x08000009L,
|
|
0x00000401L,0x08000401L,0x00000409L,0x08000409L,
|
|
0x00020001L,0x08020001L,0x00020009L,0x08020009L,
|
|
0x00020401L,0x08020401L,0x00020409L,0x08020409L,
|
|
0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
|
|
0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
|
|
0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
|
|
0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
|
|
0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
|
|
0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
|
|
0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
|
|
0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
|
|
},{
|
|
/* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
|
|
0x00000000L,0x00000100L,0x00080000L,0x00080100L,
|
|
0x01000000L,0x01000100L,0x01080000L,0x01080100L,
|
|
0x00000010L,0x00000110L,0x00080010L,0x00080110L,
|
|
0x01000010L,0x01000110L,0x01080010L,0x01080110L,
|
|
0x00200000L,0x00200100L,0x00280000L,0x00280100L,
|
|
0x01200000L,0x01200100L,0x01280000L,0x01280100L,
|
|
0x00200010L,0x00200110L,0x00280010L,0x00280110L,
|
|
0x01200010L,0x01200110L,0x01280010L,0x01280110L,
|
|
0x00000200L,0x00000300L,0x00080200L,0x00080300L,
|
|
0x01000200L,0x01000300L,0x01080200L,0x01080300L,
|
|
0x00000210L,0x00000310L,0x00080210L,0x00080310L,
|
|
0x01000210L,0x01000310L,0x01080210L,0x01080310L,
|
|
0x00200200L,0x00200300L,0x00280200L,0x00280300L,
|
|
0x01200200L,0x01200300L,0x01280200L,0x01280300L,
|
|
0x00200210L,0x00200310L,0x00280210L,0x00280310L,
|
|
0x01200210L,0x01200310L,0x01280210L,0x01280310L,
|
|
},{
|
|
/* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
|
|
0x00000000L,0x04000000L,0x00040000L,0x04040000L,
|
|
0x00000002L,0x04000002L,0x00040002L,0x04040002L,
|
|
0x00002000L,0x04002000L,0x00042000L,0x04042000L,
|
|
0x00002002L,0x04002002L,0x00042002L,0x04042002L,
|
|
0x00000020L,0x04000020L,0x00040020L,0x04040020L,
|
|
0x00000022L,0x04000022L,0x00040022L,0x04040022L,
|
|
0x00002020L,0x04002020L,0x00042020L,0x04042020L,
|
|
0x00002022L,0x04002022L,0x00042022L,0x04042022L,
|
|
0x00000800L,0x04000800L,0x00040800L,0x04040800L,
|
|
0x00000802L,0x04000802L,0x00040802L,0x04040802L,
|
|
0x00002800L,0x04002800L,0x00042800L,0x04042800L,
|
|
0x00002802L,0x04002802L,0x00042802L,0x04042802L,
|
|
0x00000820L,0x04000820L,0x00040820L,0x04040820L,
|
|
0x00000822L,0x04000822L,0x00040822L,0x04040822L,
|
|
0x00002820L,0x04002820L,0x00042820L,0x04042820L,
|
|
0x00002822L,0x04002822L,0x00042822L,0x04042822L,
|
|
}};
|
|
|
|
int des_set_key(const_des_cblock *key, des_key_schedule schedule)
|
|
{
|
|
if (des_check_key)
|
|
{
|
|
return des_set_key_checked(key, schedule);
|
|
}
|
|
else
|
|
{
|
|
des_set_key_unchecked(key, schedule);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* return 0 if key parity is odd (correct),
|
|
* return -1 if key parity error,
|
|
* return -2 if illegal weak key.
|
|
*/
|
|
int des_set_key_checked(const_des_cblock *key, des_key_schedule schedule)
|
|
{
|
|
if (!des_check_key_parity(key))
|
|
return(-1);
|
|
if (des_is_weak_key(key))
|
|
return(-2);
|
|
des_set_key_unchecked(key, schedule);
|
|
return 0;
|
|
}
|
|
|
|
void des_set_key_unchecked(const_des_cblock *key, des_key_schedule schedule)
|
|
{
|
|
static int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
|
|
register DES_LONG c,d,t,s,t2;
|
|
register const unsigned char *in;
|
|
register DES_LONG *k;
|
|
register int i;
|
|
|
|
k = &schedule->ks.deslong[0];
|
|
in = &(*key)[0];
|
|
|
|
c2l(in,c);
|
|
c2l(in,d);
|
|
|
|
/* do PC1 in 47 simple operations :-)
|
|
* Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
|
|
* for the inspiration. :-) */
|
|
PERM_OP (d,c,t,4,0x0f0f0f0fL);
|
|
HPERM_OP(c,t,-2,0xcccc0000L);
|
|
HPERM_OP(d,t,-2,0xcccc0000L);
|
|
PERM_OP (d,c,t,1,0x55555555L);
|
|
PERM_OP (c,d,t,8,0x00ff00ffL);
|
|
PERM_OP (d,c,t,1,0x55555555L);
|
|
d= (((d&0x000000ffL)<<16L)| (d&0x0000ff00L) |
|
|
((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
|
|
c&=0x0fffffffL;
|
|
|
|
for (i=0; i<ITERATIONS; i++)
|
|
{
|
|
if (shifts2[i])
|
|
{ c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
|
|
else
|
|
{ c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
|
|
c&=0x0fffffffL;
|
|
d&=0x0fffffffL;
|
|
/* could be a few less shifts but I am to lazy at this
|
|
* point in time to investigate */
|
|
s= des_skb[0][ (c )&0x3f ]|
|
|
des_skb[1][((c>> 6L)&0x03)|((c>> 7L)&0x3c)]|
|
|
des_skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]|
|
|
des_skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) |
|
|
((c>>22L)&0x38)];
|
|
t= des_skb[4][ (d )&0x3f ]|
|
|
des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
|
|
des_skb[6][ (d>>15L)&0x3f ]|
|
|
des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];
|
|
|
|
/* table contained 0213 4657 */
|
|
t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
|
|
*(k++)=ROTATE(t2,30)&0xffffffffL;
|
|
|
|
t2=((s>>16L)|(t&0xffff0000L));
|
|
*(k++)=ROTATE(t2,26)&0xffffffffL;
|
|
}
|
|
}
|
|
|
|
int des_key_sched(const_des_cblock *key, des_key_schedule schedule)
|
|
{
|
|
return(des_set_key(key,schedule));
|
|
}
|
|
/*
|
|
#undef des_fixup_key_parity
|
|
void des_fixup_key_parity(des_cblock *key)
|
|
{
|
|
des_set_odd_parity(key);
|
|
}
|
|
*/
|