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- /* lib/des/ecb_enc.c */
- /* Copyright (C) 1995 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 "des_locl.h"
- #include "spr.h"
-
- const char *DES_version="libdes v 3.21 - 95/11/21 - eay";
-
- void des_ecb_encrypt(input, output, ks, encrypt)
- des_cblock (*input);
- des_cblock (*output);
- des_key_schedule ks;
- int encrypt;
- {
- register unsigned long l0,l1;
- register unsigned char *in,*out;
- unsigned long ll[2];
-
- in=(unsigned char *)input;
- out=(unsigned char *)output;
- c2l(in,l0); ll[0]=l0;
- c2l(in,l1); ll[1]=l1;
- des_encrypt(ll,ks,encrypt);
- l0=ll[0]; l2c(l0,out);
- l1=ll[1]; l2c(l1,out);
- l0=l1=ll[0]=ll[1]=0;
- }
-
- void des_encrypt(data, ks, encrypt)
- unsigned long *data;
- des_key_schedule ks;
- int encrypt;
- {
- register unsigned long l,r,t,u;
- #ifdef DES_USE_PTR
- register unsigned char *des_SP=(unsigned char *)des_SPtrans;
- #endif
- #ifdef MSDOS
- union fudge {
- unsigned long l;
- unsigned short s[2];
- unsigned char c[4];
- } U,T;
- #endif
- register int i;
- register unsigned 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=(unsigned 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+=4)
- {
- D_ENCRYPT(l,r,i+0); /* 1 */
- D_ENCRYPT(r,l,i+2); /* 2 */
- }
- }
- else
- {
- for (i=30; i>0; i-=4)
- {
- D_ENCRYPT(l,r,i-0); /* 16 */
- D_ENCRYPT(r,l,i-2); /* 15 */
- }
- }
- 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)
- unsigned long *data;
- des_key_schedule ks;
- int encrypt;
- {
- register unsigned long l,r,t,u;
- #ifdef DES_USE_PTR
- register unsigned char *des_SP=(unsigned char *)des_SPtrans;
- #endif
- #ifdef MSDOS
- union fudge {
- unsigned long l;
- unsigned short s[2];
- unsigned char c[4];
- } U,T;
- #endif
- register int i;
- register unsigned 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=(unsigned 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+=4)
- {
- D_ENCRYPT(l,r,i+0); /* 1 */
- D_ENCRYPT(r,l,i+2); /* 2 */
- }
- }
- else
- {
- for (i=30; i>0; i-=4)
- {
- D_ENCRYPT(l,r,i-0); /* 16 */
- D_ENCRYPT(r,l,i-2); /* 15 */
- }
- }
- 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;
- }
-