early-access version 1255
This commit is contained in:
pineappleEA
148
externals/libressl/crypto/des/xcbc_enc.c
vendored
Executable file
148
externals/libressl/crypto/des/xcbc_enc.c
vendored
Executable file
@@ -0,0 +1,148 @@
|
||||
/* $OpenBSD: xcbc_enc.c,v 1.9 2015/02/07 13:19:15 doug Exp $ */
|
||||
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
||||
* All rights reserved.
|
||||
*
|
||||
* This package is an SSL implementation written
|
||||
* by Eric Young (eay@cryptsoft.com).
|
||||
* The implementation was written so as to conform with Netscapes SSL.
|
||||
*
|
||||
* This library is free for commercial and non-commercial use as long as
|
||||
* the following conditions are aheared to. The following conditions
|
||||
* apply to all code found in this distribution, be it the RC4, RSA,
|
||||
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
||||
* included with this distribution is covered by the same copyright terms
|
||||
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
||||
*
|
||||
* Copyright remains Eric Young's, and as such any Copyright notices in
|
||||
* the code are not to be removed.
|
||||
* If this package is used in a product, Eric Young should be given attribution
|
||||
* as the author of the parts of the library 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 cryptographic software written by
|
||||
* Eric Young (eay@cryptsoft.com)"
|
||||
* The word 'cryptographic' can be left out if the rouines from the library
|
||||
* being used are not cryptographic related :-).
|
||||
* 4. If you include any Windows specific code (or a derivative thereof) from
|
||||
* the apps directory (application code) you must include an acknowledgement:
|
||||
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
||||
*
|
||||
* 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"
|
||||
|
||||
/* RSA's DESX */
|
||||
|
||||
void DES_xcbc_encrypt(const unsigned char *in, unsigned char *out,
|
||||
long length, DES_key_schedule *schedule,
|
||||
DES_cblock *ivec, const_DES_cblock *inw,
|
||||
const_DES_cblock *outw, int enc)
|
||||
{
|
||||
DES_LONG tin0,tin1;
|
||||
DES_LONG tout0,tout1,xor0,xor1;
|
||||
DES_LONG inW0,inW1,outW0,outW1;
|
||||
const unsigned char *in2;
|
||||
long l=length;
|
||||
DES_LONG tin[2];
|
||||
unsigned char *iv;
|
||||
|
||||
in2 = &(*inw)[0];
|
||||
c2l(in2,inW0);
|
||||
c2l(in2,inW1);
|
||||
in2 = &(*outw)[0];
|
||||
c2l(in2,outW0);
|
||||
c2l(in2,outW1);
|
||||
|
||||
iv = &(*ivec)[0];
|
||||
|
||||
if (enc)
|
||||
{
|
||||
c2l(iv,tout0);
|
||||
c2l(iv,tout1);
|
||||
for (l-=8; l>=0; l-=8)
|
||||
{
|
||||
c2l(in,tin0);
|
||||
c2l(in,tin1);
|
||||
tin0^=tout0^inW0; tin[0]=tin0;
|
||||
tin1^=tout1^inW1; tin[1]=tin1;
|
||||
DES_encrypt1(tin,schedule,DES_ENCRYPT);
|
||||
tout0=tin[0]^outW0; l2c(tout0,out);
|
||||
tout1=tin[1]^outW1; l2c(tout1,out);
|
||||
}
|
||||
if (l != -8)
|
||||
{
|
||||
c2ln(in,tin0,tin1,l+8);
|
||||
tin0^=tout0^inW0; tin[0]=tin0;
|
||||
tin1^=tout1^inW1; tin[1]=tin1;
|
||||
DES_encrypt1(tin,schedule,DES_ENCRYPT);
|
||||
tout0=tin[0]^outW0; l2c(tout0,out);
|
||||
tout1=tin[1]^outW1; l2c(tout1,out);
|
||||
}
|
||||
iv = &(*ivec)[0];
|
||||
l2c(tout0,iv);
|
||||
l2c(tout1,iv);
|
||||
}
|
||||
else
|
||||
{
|
||||
c2l(iv,xor0);
|
||||
c2l(iv,xor1);
|
||||
for (l-=8; l>0; l-=8)
|
||||
{
|
||||
c2l(in,tin0); tin[0]=tin0^outW0;
|
||||
c2l(in,tin1); tin[1]=tin1^outW1;
|
||||
DES_encrypt1(tin,schedule,DES_DECRYPT);
|
||||
tout0=tin[0]^xor0^inW0;
|
||||
tout1=tin[1]^xor1^inW1;
|
||||
l2c(tout0,out);
|
||||
l2c(tout1,out);
|
||||
xor0=tin0;
|
||||
xor1=tin1;
|
||||
}
|
||||
if (l != -8)
|
||||
{
|
||||
c2l(in,tin0); tin[0]=tin0^outW0;
|
||||
c2l(in,tin1); tin[1]=tin1^outW1;
|
||||
DES_encrypt1(tin,schedule,DES_DECRYPT);
|
||||
tout0=tin[0]^xor0^inW0;
|
||||
tout1=tin[1]^xor1^inW1;
|
||||
l2cn(tout0,tout1,out,l+8);
|
||||
xor0=tin0;
|
||||
xor1=tin1;
|
||||
}
|
||||
|
||||
iv = &(*ivec)[0];
|
||||
l2c(xor0,iv);
|
||||
l2c(xor1,iv);
|
||||
}
|
||||
tin0=tin1=tout0=tout1=xor0=xor1=0;
|
||||
inW0=inW1=outW0=outW1=0;
|
||||
tin[0]=tin[1]=0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user