1 /* crypto/des/ede_enc.c */
\r/* Copyright (C) 1995-1997 Eric Young (eay@mincom.oz.au)
\r * All rights reserved.
\r *
\r * This package is an SSL implementation written
\r * by Eric Young (eay@mincom.oz.au).
\r * The implementation was written so as to conform with Netscapes SSL.
\r *
\r * This library is free for commercial and non-commercial use as long as
\r * the following conditions are aheared to. The following conditions
\r * apply to all code found in this distribution, be it the RC4, RSA,
\r * lhash, DES, etc., code; not just the SSL code. The SSL documentation
\r * included with this distribution is covered by the same copyright terms
\r * except that the holder is Tim Hudson (tjh@mincom.oz.au).
\r *
\r * Copyright remains Eric Young's, and as such any Copyright notices in
\r * the code are not to be removed.
\r * If this package is used in a product, Eric Young should be given attribution
\r * as the author of the parts of the library used.
\r * This can be in the form of a textual message at program startup or
\r * in documentation (online or textual) provided with the package.
\r *
\r * Redistribution and use in source and binary forms, with or without
\r * modification, are permitted provided that the following conditions
\r * are met:
\r * 1. Redistributions of source code must retain the copyright
\r * notice, this list of conditions and the following disclaimer.
\r * 2. Redistributions in binary form must reproduce the above copyright
\r * notice, this list of conditions and the following disclaimer in the
\r * documentation and/or other materials provided with the distribution.
\r * 3. All advertising materials mentioning features or use of this software
\r * must display the following acknowledgement:
\r * "This product includes cryptographic software written by
\r * Eric Young (eay@mincom.oz.au)"
\r * The word 'cryptographic' can be left out if the rouines from the library
\r * being used are not cryptographic related :-).
\r * 4. If you include any Windows specific code (or a derivative thereof) from
\r * the apps directory (application code) you must include an acknowledgement:
\r * "This product includes software written by Tim Hudson (tjh@mincom.oz.au)"
\r *
\r * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
\r * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\r * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\r * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
\r * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
\r * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\r * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\r * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
\r * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
\r * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
\r * SUCH DAMAGE.
\r *
\r * The licence and distribution terms for any publically available version or
\r * derivative of this code cannot be changed. i.e. this code cannot simply be
\r * copied and put under another distribution licence
\r * [including the GNU Public Licence.]
\r */
\r\r#include "des_locl.h"
\r\rvoid des_ede3_cbc_encrypt(input, output, length, ks1, ks2, ks3, ivec, encrypt)
\rdes_cblock (*input);
\rdes_cblock (*output);
\rlong length;
\rdes_key_schedule ks1;
\rdes_key_schedule ks2;
\rdes_key_schedule ks3;
\rdes_cblock (*ivec);
\rint encrypt;
\r {
\r register DES_LONG tin0,tin1;
\r register DES_LONG tout0,tout1,xor0,xor1;
\r register unsigned char *in,*out;
\r register long l=length;
\r DES_LONG tin[2];
\r unsigned char *iv;
\r\r in=(unsigned char *)input;
\r out=(unsigned char *)output;
\r iv=(unsigned char *)ivec;
\r\r if (encrypt)
\r {
\r c2l(iv,tout0);
\r c2l(iv,tout1);
\r for (l-=8; l>=0; l-=8)
\r {
\r c2l(in,tin0);
\r c2l(in,tin1);
\r tin0^=tout0;
\r tin1^=tout1;
\r\r tin[0]=tin0;
\r tin[1]=tin1;
\r des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
\r tout0=tin[0];
\r tout1=tin[1];
\r\r l2c(tout0,out);
\r l2c(tout1,out);
\r }
\r if (l != -8)
\r {
\r c2ln(in,tin0,tin1,l+8);
\r tin0^=tout0;
\r tin1^=tout1;
\r\r tin[0]=tin0;
\r tin[1]=tin1;
\r des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
\r tout0=tin[0];
\r tout1=tin[1];
\r\r l2c(tout0,out);
\r l2c(tout1,out);
\r }
\r iv=(unsigned char *)ivec;
\r l2c(tout0,iv);
\r l2c(tout1,iv);
\r }
\r else
\r {
\r register DES_LONG t0,t1;
\r\r c2l(iv,xor0);
\r c2l(iv,xor1);
\r for (l-=8; l>=0; l-=8)
\r {
\r c2l(in,tin0);
\r c2l(in,tin1);
\r\r t0=tin0;
\r t1=tin1;
\r\r tin[0]=tin0;
\r tin[1]=tin1;
\r des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
\r tout0=tin[0];
\r tout1=tin[1];
\r\r tout0^=xor0;
\r tout1^=xor1;
\r l2c(tout0,out);
\r l2c(tout1,out);
\r xor0=t0;
\r xor1=t1;
\r }
\r if (l != -8)
\r {
\r c2l(in,tin0);
\r c2l(in,tin1);
\r\r t0=tin0;
\r t1=tin1;
\r\r tin[0]=tin0;
\r tin[1]=tin1;
\r des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
\r tout0=tin[0];
\r tout1=tin[1];
\r\r tout0^=xor0;
\r tout1^=xor1;
\r l2cn(tout0,tout1,out,l+8);
\r xor0=t0;
\r xor1=t1;
\r }
\r iv=(unsigned char *)ivec;
\r l2c(xor0,iv);
\r l2c(xor1,iv);
\r }
\r tin0=tin1=tout0=tout1=xor0=xor1=0;
\r tin[0]=tin[1]=0;
\r }
\r\r#ifdef undef /* MACRO */
\rvoid des_ede2_cbc_encrypt(input, output, length, ks1, ks2, ivec, enc)
\rdes_cblock (*input);
\rdes_cblock (*output);
\rlong length;
\rdes_key_schedule ks1;
\rdes_key_schedule ks2;
\rdes_cblock (*ivec);
\rint enc;
\r {
\r des_ede3_cbc_encrypt(input,output,length,ks1,ks2,ks1,ivec,enc);
\r }
\r#endif
\r\r
projects / cyrus-sasl.git / blob