/* $FreeBSD: src/sys/crypto/des/des_ecb.c,v 1.1.2.2 2001/07/03 11:01:31 ume Exp $ */ /* $KAME: des_ecb.c,v 1.5 2000/11/06 13:58:08 itojun Exp $ */ /* crypto/des/ecb_enc.c */ /* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au) * All rights reserved. * * This file is part of an SSL implementation written * by Eric Young (eay@mincom.oz.au). * The implementation was written so as to conform with Netscapes SSL * specification. This library and applications are * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE * as long as the following conditions are aheared to. * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. If this code is used in a product, * Eric Young should be given attribution as the author of the parts 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 software developed by Eric Young (eay@mincom.oz.au) * * 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/param.h> #include <sys/systm.h> #include <crypto/des/des_locl.h> #include <crypto/des/spr.h> char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay"; char *DES_version="DES part of SSLeay 0.6.4 30-Aug-1996"; char *des_options() { #ifdef DES_PTR if (sizeof(DES_LONG) != sizeof(long)) return("des(ptr,int)"); else return("des(ptr,long)"); #else if (sizeof(DES_LONG) != sizeof(long)) return("des(idx,int)"); else return("des(idx,long)"); #endif } void des_ecb_encrypt(input, output, ks, encrypt) des_cblock (*input); des_cblock (*output); des_key_schedule ks; int encrypt; { register DES_LONG l; register unsigned char *in,*out; DES_LONG ll[2]; in=(unsigned char *)input; out=(unsigned char *)output; c2l(in,l); ll[0]=l; c2l(in,l); ll[1]=l; des_encrypt(ll,ks,encrypt); l=ll[0]; l2c(l,out); l=ll[1]; l2c(l,out); l=ll[0]=ll[1]=0; } void des_encrypt(data, ks, encrypt) DES_LONG *data; des_key_schedule ks; int encrypt; { register DES_LONG l,r,t,u; #ifdef DES_PTR register unsigned char *des_SP=(unsigned char *)des_SPtrans; #endif #ifdef undef union fudge { DES_LONG l; unsigned short s[2]; unsigned char c[4]; } U,T; #endif register int i; register DES_LONG *s; u=data[0]; r=data[1]; IP(u,r); /* 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. */ l=(r<<1)|(r>>31); r=(u<<1)|(u>>31); /* clear the top bits on machines with 8byte longs */ l&=0xffffffffL; r&=0xffffffffL; s=(DES_LONG *)ks; /* I don't know if it is worth the effort of loop unrolling the * inner loop */ if (encrypt) { 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 */ } } 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 */ } } l=(l>>1)|(l<<31); r=(r>>1)|(r<<31); /* clear the top bits on machines with 8byte longs */ l&=0xffffffffL; r&=0xffffffffL; FP(r,l); data[0]=l; data[1]=r; l=r=t=u=0; } void des_encrypt2(data, ks, encrypt) DES_LONG *data; des_key_schedule ks; int encrypt; { register DES_LONG l,r,t,u; #ifdef DES_PTR register unsigned char *des_SP=(unsigned char *)des_SPtrans; #endif #ifdef undef union fudge { DES_LONG l; unsigned short s[2]; unsigned char c[4]; } U,T; #endif register int i; register DES_LONG *s; u=data[0]; r=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. */ l=(r<<1)|(r>>31); r=(u<<1)|(u>>31); /* clear the top bits on machines with 8byte longs */ l&=0xffffffffL; r&=0xffffffffL; s=(DES_LONG *)ks; /* I don't know if it is worth the effort of loop unrolling the * inner loop */ if (encrypt) { 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 */ } } 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 */ } } l=(l>>1)|(l<<31); r=(r>>1)|(r<<31); /* clear the top bits on machines with 8byte longs */ l&=0xffffffffL; r&=0xffffffffL; data[0]=l; data[1]=r; l=r=t=u=0; }