mirror of
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686cdd19b1
API changes: - additional IPv6 ioctls - IPsec PF_KEY API was changed, it is mandatory to upgrade setkey(8). (also syntax change)
233 lines
6.2 KiB
C
233 lines
6.2 KiB
C
/* $FreeBSD$ */
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/* $KAME: des_ecb.c,v 1.3 2000/03/27 04:36:33 sumikawa Exp $ */
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/* crypto/des/ecb_enc.c */
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/* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
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* All rights reserved.
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*
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* This file is part of an SSL implementation written
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* by Eric Young (eay@mincom.oz.au).
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* The implementation was written so as to conform with Netscapes SSL
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* specification. This library and applications are
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* FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
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* as long as the following conditions are aheared to.
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed. If this code is used in a product,
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* Eric Young should be given attribution as the author of the parts used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Eric Young (eay@mincom.oz.au)
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <crypto/des/des_locl.h>
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#include <crypto/des/spr.h>
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char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay";
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char *DES_version="DES part of SSLeay 0.6.4 30-Aug-1996";
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char *des_options()
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{
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#ifdef DES_PTR
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if (sizeof(DES_LONG) != sizeof(long))
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return("des(ptr,int)");
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else
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return("des(ptr,long)");
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#else
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if (sizeof(DES_LONG) != sizeof(long))
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return("des(idx,int)");
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else
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return("des(idx,long)");
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#endif
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}
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void des_ecb_encrypt(input, output, ks, encrypt)
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des_cblock (*input);
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des_cblock (*output);
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des_key_schedule ks;
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int encrypt;
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{
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register DES_LONG l;
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register unsigned char *in,*out;
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DES_LONG ll[2];
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in=(unsigned char *)input;
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out=(unsigned char *)output;
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c2l(in,l); ll[0]=l;
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c2l(in,l); ll[1]=l;
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des_encrypt(ll,ks,encrypt);
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l=ll[0]; l2c(l,out);
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l=ll[1]; l2c(l,out);
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l=ll[0]=ll[1]=0;
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}
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void des_encrypt(data, ks, encrypt)
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DES_LONG *data;
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des_key_schedule ks;
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int encrypt;
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{
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register DES_LONG l,r,t,u;
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#ifdef DES_PTR
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register unsigned char *des_SP=(unsigned char *)des_SPtrans;
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#endif
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#ifdef undef
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union fudge {
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DES_LONG l;
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unsigned short s[2];
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unsigned char c[4];
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} U,T;
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#endif
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register int i;
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register DES_LONG *s;
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u=data[0];
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r=data[1];
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IP(u,r);
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/* Things have been modified so that the initial rotate is
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* done outside the loop. This required the
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* des_SPtrans values in sp.h to be rotated 1 bit to the right.
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* One perl script later and things have a 5% speed up on a sparc2.
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* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
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* for pointing this out. */
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l=(r<<1)|(r>>31);
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r=(u<<1)|(u>>31);
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/* clear the top bits on machines with 8byte longs */
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l&=0xffffffffL;
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r&=0xffffffffL;
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s=(DES_LONG *)ks;
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/* I don't know if it is worth the effort of loop unrolling the
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* inner loop
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*/
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if (encrypt)
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{
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for (i=0; i<32; i+=8)
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{
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D_ENCRYPT(l,r,i+0); /* 1 */
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D_ENCRYPT(r,l,i+2); /* 2 */
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D_ENCRYPT(l,r,i+4); /* 3 */
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D_ENCRYPT(r,l,i+6); /* 4 */
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}
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}
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else
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{
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for (i=30; i>0; i-=8)
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{
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D_ENCRYPT(l,r,i-0); /* 16 */
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D_ENCRYPT(r,l,i-2); /* 15 */
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D_ENCRYPT(l,r,i-4); /* 14 */
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D_ENCRYPT(r,l,i-6); /* 13 */
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}
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}
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l=(l>>1)|(l<<31);
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r=(r>>1)|(r<<31);
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/* clear the top bits on machines with 8byte longs */
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l&=0xffffffffL;
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r&=0xffffffffL;
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FP(r,l);
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data[0]=l;
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data[1]=r;
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l=r=t=u=0;
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}
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void des_encrypt2(data, ks, encrypt)
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DES_LONG *data;
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des_key_schedule ks;
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int encrypt;
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{
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register DES_LONG l,r,t,u;
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#ifdef DES_PTR
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register unsigned char *des_SP=(unsigned char *)des_SPtrans;
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#endif
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#ifdef undef
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union fudge {
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DES_LONG l;
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unsigned short s[2];
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unsigned char c[4];
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} U,T;
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#endif
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register int i;
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register DES_LONG *s;
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u=data[0];
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r=data[1];
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/* Things have been modified so that the initial rotate is
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* done outside the loop. This required the
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* des_SPtrans values in sp.h to be rotated 1 bit to the right.
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* One perl script later and things have a 5% speed up on a sparc2.
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* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
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* for pointing this out. */
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l=(r<<1)|(r>>31);
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r=(u<<1)|(u>>31);
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/* clear the top bits on machines with 8byte longs */
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l&=0xffffffffL;
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r&=0xffffffffL;
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s=(DES_LONG *)ks;
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/* I don't know if it is worth the effort of loop unrolling the
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* inner loop */
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if (encrypt)
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{
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for (i=0; i<32; i+=8)
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{
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D_ENCRYPT(l,r,i+0); /* 1 */
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D_ENCRYPT(r,l,i+2); /* 2 */
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D_ENCRYPT(l,r,i+4); /* 3 */
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D_ENCRYPT(r,l,i+6); /* 4 */
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}
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}
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else
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{
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for (i=30; i>0; i-=8)
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{
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D_ENCRYPT(l,r,i-0); /* 16 */
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D_ENCRYPT(r,l,i-2); /* 15 */
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D_ENCRYPT(l,r,i-4); /* 14 */
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D_ENCRYPT(r,l,i-6); /* 13 */
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}
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}
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l=(l>>1)|(l<<31);
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r=(r>>1)|(r<<31);
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/* clear the top bits on machines with 8byte longs */
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l&=0xffffffffL;
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r&=0xffffffffL;
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data[0]=l;
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data[1]=r;
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l=r=t=u=0;
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}
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