aec8b94b5c
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@513 ec53bebd-3082-4978-b11e-865c3cabbd6b
93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
/* lib/des/cbc_cksm.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"
|
|
|
|
DES_LONG des_cbc_cksum(input, output, length, schedule, ivec)
|
|
des_cblock (*input);
|
|
des_cblock (*output);
|
|
long length;
|
|
des_key_schedule schedule;
|
|
des_cblock (*ivec);
|
|
{
|
|
register DES_LONG tout0,tout1,tin0,tin1;
|
|
register long l=length;
|
|
DES_LONG tin[2];
|
|
unsigned char *in,*out,*iv;
|
|
|
|
in=(unsigned char *)input;
|
|
out=(unsigned char *)output;
|
|
iv=(unsigned char *)ivec;
|
|
|
|
c2l(iv,tout0);
|
|
c2l(iv,tout1);
|
|
for (; l>0; l-=8)
|
|
{
|
|
if (l >= 8)
|
|
{
|
|
c2l(in,tin0);
|
|
c2l(in,tin1);
|
|
}
|
|
else
|
|
c2ln(in,tin0,tin1,l);
|
|
|
|
tin0^=tout0; tin[0]=tin0;
|
|
tin1^=tout1; tin[1]=tin1;
|
|
des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
|
|
/* fix 15/10/91 eay - thanks to keithr@sco.COM */
|
|
tout0=tin[0];
|
|
tout1=tin[1];
|
|
}
|
|
if (out != NULL)
|
|
{
|
|
l2c(tout0,out);
|
|
l2c(tout1,out);
|
|
}
|
|
tout0=tin0=tin1=tin[0]=tin[1]=0;
|
|
return(tout1);
|
|
}
|