295 lines
8.8 KiB
C
295 lines
8.8 KiB
C
/* crypto/des/des_enc.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.]
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: des_enc.c,v 1.2 2001/11/13 01:40:10 lukem Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <crypto/des/des_locl.h>
|
|
|
|
extern const DES_LONG des_SPtrans[8][64];
|
|
|
|
void des_encrypt1(DES_LONG *data, des_key_schedule ks, int enc)
|
|
{
|
|
register DES_LONG l,r,t,u;
|
|
#ifdef DES_PTR
|
|
register const unsigned char *des_SP=(const unsigned char *)des_SPtrans;
|
|
#endif
|
|
#ifndef DES_UNROLL
|
|
register int i;
|
|
#endif
|
|
register DES_LONG *s;
|
|
|
|
r=data[0];
|
|
l=data[1];
|
|
|
|
IP(r,l);
|
|
/* Things have been modified so that the initial rotate is
|
|
* done outside the loop. This required the
|
|
* des_SPtrans values in sp.h to be rotated 1 bit to the right.
|
|
* One perl script later and things have a 5% speed up on a sparc2.
|
|
* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
|
|
* for pointing this out. */
|
|
/* clear the top bits on machines with 8byte longs */
|
|
/* shift left by 2 */
|
|
r=ROTATE(r,29)&0xffffffffL;
|
|
l=ROTATE(l,29)&0xffffffffL;
|
|
|
|
s=ks->ks.deslong;
|
|
/* I don't know if it is worth the effort of loop unrolling the
|
|
* inner loop */
|
|
if (enc)
|
|
{
|
|
#ifdef DES_UNROLL
|
|
D_ENCRYPT(l,r, 0); /* 1 */
|
|
D_ENCRYPT(r,l, 2); /* 2 */
|
|
D_ENCRYPT(l,r, 4); /* 3 */
|
|
D_ENCRYPT(r,l, 6); /* 4 */
|
|
D_ENCRYPT(l,r, 8); /* 5 */
|
|
D_ENCRYPT(r,l,10); /* 6 */
|
|
D_ENCRYPT(l,r,12); /* 7 */
|
|
D_ENCRYPT(r,l,14); /* 8 */
|
|
D_ENCRYPT(l,r,16); /* 9 */
|
|
D_ENCRYPT(r,l,18); /* 10 */
|
|
D_ENCRYPT(l,r,20); /* 11 */
|
|
D_ENCRYPT(r,l,22); /* 12 */
|
|
D_ENCRYPT(l,r,24); /* 13 */
|
|
D_ENCRYPT(r,l,26); /* 14 */
|
|
D_ENCRYPT(l,r,28); /* 15 */
|
|
D_ENCRYPT(r,l,30); /* 16 */
|
|
#else
|
|
for (i=0; i<32; i+=8)
|
|
{
|
|
D_ENCRYPT(l,r,i+0); /* 1 */
|
|
D_ENCRYPT(r,l,i+2); /* 2 */
|
|
D_ENCRYPT(l,r,i+4); /* 3 */
|
|
D_ENCRYPT(r,l,i+6); /* 4 */
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#ifdef DES_UNROLL
|
|
D_ENCRYPT(l,r,30); /* 16 */
|
|
D_ENCRYPT(r,l,28); /* 15 */
|
|
D_ENCRYPT(l,r,26); /* 14 */
|
|
D_ENCRYPT(r,l,24); /* 13 */
|
|
D_ENCRYPT(l,r,22); /* 12 */
|
|
D_ENCRYPT(r,l,20); /* 11 */
|
|
D_ENCRYPT(l,r,18); /* 10 */
|
|
D_ENCRYPT(r,l,16); /* 9 */
|
|
D_ENCRYPT(l,r,14); /* 8 */
|
|
D_ENCRYPT(r,l,12); /* 7 */
|
|
D_ENCRYPT(l,r,10); /* 6 */
|
|
D_ENCRYPT(r,l, 8); /* 5 */
|
|
D_ENCRYPT(l,r, 6); /* 4 */
|
|
D_ENCRYPT(r,l, 4); /* 3 */
|
|
D_ENCRYPT(l,r, 2); /* 2 */
|
|
D_ENCRYPT(r,l, 0); /* 1 */
|
|
#else
|
|
for (i=30; i>0; i-=8)
|
|
{
|
|
D_ENCRYPT(l,r,i-0); /* 16 */
|
|
D_ENCRYPT(r,l,i-2); /* 15 */
|
|
D_ENCRYPT(l,r,i-4); /* 14 */
|
|
D_ENCRYPT(r,l,i-6); /* 13 */
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* rotate and clear the top bits on machines with 8byte longs */
|
|
l=ROTATE(l,3)&0xffffffffL;
|
|
r=ROTATE(r,3)&0xffffffffL;
|
|
|
|
FP(r,l);
|
|
data[0]=l;
|
|
data[1]=r;
|
|
l=r=t=u=0;
|
|
}
|
|
|
|
void des_encrypt2(DES_LONG *data, des_key_schedule ks, int enc)
|
|
{
|
|
register DES_LONG l,r,t,u;
|
|
#ifdef DES_PTR
|
|
register const unsigned char *des_SP=(const unsigned char *)des_SPtrans;
|
|
#endif
|
|
#ifndef DES_UNROLL
|
|
register int i;
|
|
#endif
|
|
register DES_LONG *s;
|
|
|
|
r=data[0];
|
|
l=data[1];
|
|
|
|
/* Things have been modified so that the initial rotate is
|
|
* done outside the loop. This required the
|
|
* des_SPtrans values in sp.h to be rotated 1 bit to the right.
|
|
* One perl script later and things have a 5% speed up on a sparc2.
|
|
* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
|
|
* for pointing this out. */
|
|
/* clear the top bits on machines with 8byte longs */
|
|
r=ROTATE(r,29)&0xffffffffL;
|
|
l=ROTATE(l,29)&0xffffffffL;
|
|
|
|
s=ks->ks.deslong;
|
|
/* I don't know if it is worth the effort of loop unrolling the
|
|
* inner loop */
|
|
if (enc)
|
|
{
|
|
#ifdef DES_UNROLL
|
|
D_ENCRYPT(l,r, 0); /* 1 */
|
|
D_ENCRYPT(r,l, 2); /* 2 */
|
|
D_ENCRYPT(l,r, 4); /* 3 */
|
|
D_ENCRYPT(r,l, 6); /* 4 */
|
|
D_ENCRYPT(l,r, 8); /* 5 */
|
|
D_ENCRYPT(r,l,10); /* 6 */
|
|
D_ENCRYPT(l,r,12); /* 7 */
|
|
D_ENCRYPT(r,l,14); /* 8 */
|
|
D_ENCRYPT(l,r,16); /* 9 */
|
|
D_ENCRYPT(r,l,18); /* 10 */
|
|
D_ENCRYPT(l,r,20); /* 11 */
|
|
D_ENCRYPT(r,l,22); /* 12 */
|
|
D_ENCRYPT(l,r,24); /* 13 */
|
|
D_ENCRYPT(r,l,26); /* 14 */
|
|
D_ENCRYPT(l,r,28); /* 15 */
|
|
D_ENCRYPT(r,l,30); /* 16 */
|
|
#else
|
|
for (i=0; i<32; i+=8)
|
|
{
|
|
D_ENCRYPT(l,r,i+0); /* 1 */
|
|
D_ENCRYPT(r,l,i+2); /* 2 */
|
|
D_ENCRYPT(l,r,i+4); /* 3 */
|
|
D_ENCRYPT(r,l,i+6); /* 4 */
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#ifdef DES_UNROLL
|
|
D_ENCRYPT(l,r,30); /* 16 */
|
|
D_ENCRYPT(r,l,28); /* 15 */
|
|
D_ENCRYPT(l,r,26); /* 14 */
|
|
D_ENCRYPT(r,l,24); /* 13 */
|
|
D_ENCRYPT(l,r,22); /* 12 */
|
|
D_ENCRYPT(r,l,20); /* 11 */
|
|
D_ENCRYPT(l,r,18); /* 10 */
|
|
D_ENCRYPT(r,l,16); /* 9 */
|
|
D_ENCRYPT(l,r,14); /* 8 */
|
|
D_ENCRYPT(r,l,12); /* 7 */
|
|
D_ENCRYPT(l,r,10); /* 6 */
|
|
D_ENCRYPT(r,l, 8); /* 5 */
|
|
D_ENCRYPT(l,r, 6); /* 4 */
|
|
D_ENCRYPT(r,l, 4); /* 3 */
|
|
D_ENCRYPT(l,r, 2); /* 2 */
|
|
D_ENCRYPT(r,l, 0); /* 1 */
|
|
#else
|
|
for (i=30; i>0; i-=8)
|
|
{
|
|
D_ENCRYPT(l,r,i-0); /* 16 */
|
|
D_ENCRYPT(r,l,i-2); /* 15 */
|
|
D_ENCRYPT(l,r,i-4); /* 14 */
|
|
D_ENCRYPT(r,l,i-6); /* 13 */
|
|
}
|
|
#endif
|
|
}
|
|
/* rotate and clear the top bits on machines with 8byte longs */
|
|
data[0]=ROTATE(l,3)&0xffffffffL;
|
|
data[1]=ROTATE(r,3)&0xffffffffL;
|
|
l=r=t=u=0;
|
|
}
|
|
|
|
void des_encrypt3(DES_LONG *data, des_key_schedule ks1, des_key_schedule ks2,
|
|
des_key_schedule ks3)
|
|
{
|
|
register DES_LONG l,r;
|
|
|
|
l=data[0];
|
|
r=data[1];
|
|
IP(l,r);
|
|
data[0]=l;
|
|
data[1]=r;
|
|
des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
|
|
des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
|
|
des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
|
|
l=data[0];
|
|
r=data[1];
|
|
FP(r,l);
|
|
data[0]=l;
|
|
data[1]=r;
|
|
}
|
|
|
|
void des_decrypt3(DES_LONG *data, des_key_schedule ks1, des_key_schedule ks2,
|
|
des_key_schedule ks3)
|
|
{
|
|
register DES_LONG l,r;
|
|
|
|
l=data[0];
|
|
r=data[1];
|
|
IP(l,r);
|
|
data[0]=l;
|
|
data[1]=r;
|
|
des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
|
|
des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
|
|
des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
|
|
l=data[0];
|
|
r=data[1];
|
|
FP(r,l);
|
|
data[0]=l;
|
|
data[1]=r;
|
|
}
|