+++ /dev/null
-/* ede_cbcm_enc.c */
-/* Written by Ben Laurie <ben@algroup.co.uk> for the OpenSSL
- * project 13 Feb 1999.
- */
-/* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
- *
- * 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 above 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 acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-/*
-
-This is an implementation of Triple DES Cipher Block Chaining with Output
-Feedback Masking, by Coppersmith, Johnson and Matyas, (IBM and Certicom).
-
-Note that there is a known attack on this by Biham and Knudsen but it takes
-a lot of work:
-
-http://www.cs.technion.ac.il/users/wwwb/cgi-bin/tr-get.cgi/1998/CS/CS0928.ps.gz
-
-*/
-
-#ifndef OPENSSL_NO_DESCBCM
-#include "des_locl.h"
-
-void DES_ede3_cbcm_encrypt(const unsigned char *in, unsigned char *out,
- long length, DES_key_schedule *ks1, DES_key_schedule *ks2,
- DES_key_schedule *ks3, DES_cblock *ivec1, DES_cblock *ivec2,
- int enc)
- {
- register DES_LONG tin0,tin1;
- register DES_LONG tout0,tout1,xor0,xor1,m0,m1;
- register long l=length;
- DES_LONG tin[2];
- unsigned char *iv1,*iv2;
-
- iv1 = &(*ivec1)[0];
- iv2 = &(*ivec2)[0];
-
- if (enc)
- {
- c2l(iv1,m0);
- c2l(iv1,m1);
- c2l(iv2,tout0);
- c2l(iv2,tout1);
- for (l-=8; l>=-7; l-=8)
- {
- tin[0]=m0;
- tin[1]=m1;
- DES_encrypt1(tin,ks3,1);
- m0=tin[0];
- m1=tin[1];
-
- if(l < 0)
- {
- c2ln(in,tin0,tin1,l+8);
- }
- else
- {
- c2l(in,tin0);
- c2l(in,tin1);
- }
- tin0^=tout0;
- tin1^=tout1;
-
- tin[0]=tin0;
- tin[1]=tin1;
- DES_encrypt1(tin,ks1,1);
- tin[0]^=m0;
- tin[1]^=m1;
- DES_encrypt1(tin,ks2,0);
- tin[0]^=m0;
- tin[1]^=m1;
- DES_encrypt1(tin,ks1,1);
- tout0=tin[0];
- tout1=tin[1];
-
- l2c(tout0,out);
- l2c(tout1,out);
- }
- iv1=&(*ivec1)[0];
- l2c(m0,iv1);
- l2c(m1,iv1);
-
- iv2=&(*ivec2)[0];
- l2c(tout0,iv2);
- l2c(tout1,iv2);
- }
- else
- {
- register DES_LONG t0,t1;
-
- c2l(iv1,m0);
- c2l(iv1,m1);
- c2l(iv2,xor0);
- c2l(iv2,xor1);
- for (l-=8; l>=-7; l-=8)
- {
- tin[0]=m0;
- tin[1]=m1;
- DES_encrypt1(tin,ks3,1);
- m0=tin[0];
- m1=tin[1];
-
- c2l(in,tin0);
- c2l(in,tin1);
-
- t0=tin0;
- t1=tin1;
-
- tin[0]=tin0;
- tin[1]=tin1;
- DES_encrypt1(tin,ks1,0);
- tin[0]^=m0;
- tin[1]^=m1;
- DES_encrypt1(tin,ks2,1);
- tin[0]^=m0;
- tin[1]^=m1;
- DES_encrypt1(tin,ks1,0);
- tout0=tin[0];
- tout1=tin[1];
-
- tout0^=xor0;
- tout1^=xor1;
- if(l < 0)
- {
- l2cn(tout0,tout1,out,l+8);
- }
- else
- {
- l2c(tout0,out);
- l2c(tout1,out);
- }
- xor0=t0;
- xor1=t1;
- }
-
- iv1=&(*ivec1)[0];
- l2c(m0,iv1);
- l2c(m1,iv1);
-
- iv2=&(*ivec2)[0];
- l2c(xor0,iv2);
- l2c(xor1,iv2);
- }
- tin0=tin1=tout0=tout1=xor0=xor1=0;
- tin[0]=tin[1]=0;
- }
-#endif
projects / bcm963xx.git / blobdiff