1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/rc2/rc2cfb64.c	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,122 @@
     1.4 +/* crypto/rc2/rc2cfb64.c */
     1.5 +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
     1.6 + * All rights reserved.
     1.7 + *
     1.8 + * This package is an SSL implementation written
     1.9 + * by Eric Young (eay@cryptsoft.com).
    1.10 + * The implementation was written so as to conform with Netscapes SSL.
    1.11 + * 
    1.12 + * This library is free for commercial and non-commercial use as long as
    1.13 + * the following conditions are aheared to.  The following conditions
    1.14 + * apply to all code found in this distribution, be it the RC4, RSA,
    1.15 + * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
    1.16 + * included with this distribution is covered by the same copyright terms
    1.17 + * except that the holder is Tim Hudson (tjh@cryptsoft.com).
    1.18 + * 
    1.19 + * Copyright remains Eric Young's, and as such any Copyright notices in
    1.20 + * the code are not to be removed.
    1.21 + * If this package is used in a product, Eric Young should be given attribution
    1.22 + * as the author of the parts of the library used.
    1.23 + * This can be in the form of a textual message at program startup or
    1.24 + * in documentation (online or textual) provided with the package.
    1.25 + * 
    1.26 + * Redistribution and use in source and binary forms, with or without
    1.27 + * modification, are permitted provided that the following conditions
    1.28 + * are met:
    1.29 + * 1. Redistributions of source code must retain the copyright
    1.30 + *    notice, this list of conditions and the following disclaimer.
    1.31 + * 2. Redistributions in binary form must reproduce the above copyright
    1.32 + *    notice, this list of conditions and the following disclaimer in the
    1.33 + *    documentation and/or other materials provided with the distribution.
    1.34 + * 3. All advertising materials mentioning features or use of this software
    1.35 + *    must display the following acknowledgement:
    1.36 + *    "This product includes cryptographic software written by
    1.37 + *     Eric Young (eay@cryptsoft.com)"
    1.38 + *    The word 'cryptographic' can be left out if the rouines from the library
    1.39 + *    being used are not cryptographic related :-).
    1.40 + * 4. If you include any Windows specific code (or a derivative thereof) from 
    1.41 + *    the apps directory (application code) you must include an acknowledgement:
    1.42 + *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
    1.43 + * 
    1.44 + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
    1.45 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    1.46 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    1.47 + * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
    1.48 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    1.49 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    1.50 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    1.51 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    1.52 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    1.53 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    1.54 + * SUCH DAMAGE.
    1.55 + * 
    1.56 + * The licence and distribution terms for any publically available version or
    1.57 + * derivative of this code cannot be changed.  i.e. this code cannot simply be
    1.58 + * copied and put under another distribution licence
    1.59 + * [including the GNU Public Licence.]
    1.60 + */
    1.61 +
    1.62 +#include <openssl/rc2.h>
    1.63 +#include "rc2_locl.h"
    1.64 +
    1.65 +/* The input and output encrypted as though 64bit cfb mode is being
    1.66 + * used.  The extra state information to record how much of the
    1.67 + * 64bit block we have used is contained in *num;
    1.68 + */
    1.69 +
    1.70 +EXPORT_C void RC2_cfb64_encrypt(const unsigned char *in, unsigned char *out,
    1.71 +		       long length, RC2_KEY *schedule, unsigned char *ivec,
    1.72 +		       int *num, int encrypt)
    1.73 +	{
    1.74 +	register unsigned long v0,v1,t;
    1.75 +	register int n= *num;
    1.76 +	register long l=length;
    1.77 +	unsigned long ti[2];
    1.78 +	unsigned char *iv,c,cc;
    1.79 +
    1.80 +	iv=(unsigned char *)ivec;
    1.81 +	if (encrypt)
    1.82 +		{
    1.83 +		while (l--)
    1.84 +			{
    1.85 +			if (n == 0)
    1.86 +				{
    1.87 +				c2l(iv,v0); ti[0]=v0;
    1.88 +				c2l(iv,v1); ti[1]=v1;
    1.89 +				RC2_encrypt((unsigned long *)ti,schedule);
    1.90 +				iv=(unsigned char *)ivec;
    1.91 +				t=ti[0]; l2c(t,iv);
    1.92 +				t=ti[1]; l2c(t,iv);
    1.93 +				iv=(unsigned char *)ivec;
    1.94 +				}
    1.95 +			c= *(in++)^iv[n];
    1.96 +			*(out++)=c;
    1.97 +			iv[n]=c;
    1.98 +			n=(n+1)&0x07;
    1.99 +			}
   1.100 +		}
   1.101 +	else
   1.102 +		{
   1.103 +		while (l--)
   1.104 +			{
   1.105 +			if (n == 0)
   1.106 +				{
   1.107 +				c2l(iv,v0); ti[0]=v0;
   1.108 +				c2l(iv,v1); ti[1]=v1;
   1.109 +				RC2_encrypt((unsigned long *)ti,schedule);
   1.110 +				iv=(unsigned char *)ivec;
   1.111 +				t=ti[0]; l2c(t,iv);
   1.112 +				t=ti[1]; l2c(t,iv);
   1.113 +				iv=(unsigned char *)ivec;
   1.114 +				}
   1.115 +			cc= *(in++);
   1.116 +			c=iv[n];
   1.117 +			iv[n]=cc;
   1.118 +			*(out++)=c^cc;
   1.119 +			n=(n+1)&0x07;
   1.120 +			}
   1.121 +		}
   1.122 +	v0=v1=ti[0]=ti[1]=t=c=cc=0;
   1.123 +	*num=n;
   1.124 +	}
   1.125 +