diff options
Diffstat (limited to 'secure/lib/libdes/cbc_cksm.c')
| -rw-r--r-- | secure/lib/libdes/cbc_cksm.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/secure/lib/libdes/cbc_cksm.c b/secure/lib/libdes/cbc_cksm.c new file mode 100644 index 0000000..9088c73 --- /dev/null +++ b/secure/lib/libdes/cbc_cksm.c @@ -0,0 +1,92 @@ +/* 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" + +unsigned 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 unsigned long tout0,tout1,tin0,tin1; + register long l=length; + unsigned 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((unsigned 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); + } |
