1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/des/ncbc_enc.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,148 @@
1.4 +/* crypto/des/ncbc_enc.c */
1.5 +/*
1.6 + * #included by:
1.7 + * cbc_enc.c (DES_cbc_encrypt)
1.8 + * des_enc.c (DES_ncbc_encrypt)
1.9 + */
1.10 +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
1.11 + * All rights reserved.
1.12 + *
1.13 + * This package is an SSL implementation written
1.14 + * by Eric Young (eay@cryptsoft.com).
1.15 + * The implementation was written so as to conform with Netscapes SSL.
1.16 + *
1.17 + * This library is free for commercial and non-commercial use as long as
1.18 + * the following conditions are aheared to. The following conditions
1.19 + * apply to all code found in this distribution, be it the RC4, RSA,
1.20 + * lhash, DES, etc., code; not just the SSL code. The SSL documentation
1.21 + * included with this distribution is covered by the same copyright terms
1.22 + * except that the holder is Tim Hudson (tjh@cryptsoft.com).
1.23 + *
1.24 + * Copyright remains Eric Young's, and as such any Copyright notices in
1.25 + * the code are not to be removed.
1.26 + * If this package is used in a product, Eric Young should be given attribution
1.27 + * as the author of the parts of the library used.
1.28 + * This can be in the form of a textual message at program startup or
1.29 + * in documentation (online or textual) provided with the package.
1.30 + *
1.31 + * Redistribution and use in source and binary forms, with or without
1.32 + * modification, are permitted provided that the following conditions
1.33 + * are met:
1.34 + * 1. Redistributions of source code must retain the copyright
1.35 + * notice, this list of conditions and the following disclaimer.
1.36 + * 2. Redistributions in binary form must reproduce the above copyright
1.37 + * notice, this list of conditions and the following disclaimer in the
1.38 + * documentation and/or other materials provided with the distribution.
1.39 + * 3. All advertising materials mentioning features or use of this software
1.40 + * must display the following acknowledgement:
1.41 + * "This product includes cryptographic software written by
1.42 + * Eric Young (eay@cryptsoft.com)"
1.43 + * The word 'cryptographic' can be left out if the rouines from the library
1.44 + * being used are not cryptographic related :-).
1.45 + * 4. If you include any Windows specific code (or a derivative thereof) from
1.46 + * the apps directory (application code) you must include an acknowledgement:
1.47 + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
1.48 + *
1.49 + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
1.50 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.51 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.52 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1.53 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.54 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.55 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.56 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.57 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.58 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.59 + * SUCH DAMAGE.
1.60 + *
1.61 + * The licence and distribution terms for any publically available version or
1.62 + * derivative of this code cannot be changed. i.e. this code cannot simply be
1.63 + * copied and put under another distribution licence
1.64 + * [including the GNU Public Licence.]
1.65 + */
1.66 +
1.67 +#include "des_locl.h"
1.68 +
1.69 +#ifdef CBC_ENC_C__DONT_UPDATE_IV
1.70 +EXPORT_C void DES_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
1.71 + DES_key_schedule *_schedule, DES_cblock *ivec, int enc)
1.72 +#else
1.73 +EXPORT_C void DES_ncbc_encrypt(const unsigned char *in, unsigned char *out, long length,
1.74 + DES_key_schedule *_schedule, DES_cblock *ivec, int enc)
1.75 +#endif
1.76 + {
1.77 + register DES_LONG tin0,tin1;
1.78 + register DES_LONG tout0,tout1,xor0,xor1;
1.79 + register long l=length;
1.80 + DES_LONG tin[2];
1.81 + unsigned char *iv;
1.82 +
1.83 + iv = &(*ivec)[0];
1.84 +
1.85 + if (enc)
1.86 + {
1.87 + c2l(iv,tout0);
1.88 + c2l(iv,tout1);
1.89 + for (l-=8; l>=0; l-=8)
1.90 + {
1.91 + c2l(in,tin0);
1.92 + c2l(in,tin1);
1.93 + tin0^=tout0; tin[0]=tin0;
1.94 + tin1^=tout1; tin[1]=tin1;
1.95 + DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT);
1.96 + tout0=tin[0]; l2c(tout0,out);
1.97 + tout1=tin[1]; l2c(tout1,out);
1.98 + }
1.99 + if (l != -8)
1.100 + {
1.101 + c2ln(in,tin0,tin1,l+8);
1.102 + tin0^=tout0; tin[0]=tin0;
1.103 + tin1^=tout1; tin[1]=tin1;
1.104 + DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT);
1.105 + tout0=tin[0]; l2c(tout0,out);
1.106 + tout1=tin[1]; l2c(tout1,out);
1.107 + }
1.108 +#ifndef CBC_ENC_C__DONT_UPDATE_IV
1.109 + iv = &(*ivec)[0];
1.110 + l2c(tout0,iv);
1.111 + l2c(tout1,iv);
1.112 +#endif
1.113 + }
1.114 + else
1.115 + {
1.116 + c2l(iv,xor0);
1.117 + c2l(iv,xor1);
1.118 + for (l-=8; l>=0; l-=8)
1.119 + {
1.120 + c2l(in,tin0); tin[0]=tin0;
1.121 + c2l(in,tin1); tin[1]=tin1;
1.122 + DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT);
1.123 + tout0=tin[0]^xor0;
1.124 + tout1=tin[1]^xor1;
1.125 + l2c(tout0,out);
1.126 + l2c(tout1,out);
1.127 + xor0=tin0;
1.128 + xor1=tin1;
1.129 + }
1.130 + if (l != -8)
1.131 + {
1.132 + c2l(in,tin0); tin[0]=tin0;
1.133 + c2l(in,tin1); tin[1]=tin1;
1.134 + DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT);
1.135 + tout0=tin[0]^xor0;
1.136 + tout1=tin[1]^xor1;
1.137 + l2cn(tout0,tout1,out,l+8);
1.138 +#ifndef CBC_ENC_C__DONT_UPDATE_IV
1.139 + xor0=tin0;
1.140 + xor1=tin1;
1.141 +#endif
1.142 + }
1.143 +#ifndef CBC_ENC_C__DONT_UPDATE_IV
1.144 + iv = &(*ivec)[0];
1.145 + l2c(xor0,iv);
1.146 + l2c(xor1,iv);
1.147 +#endif
1.148 + }
1.149 + tin0=tin1=tout0=tout1=xor0=xor1=0;
1.150 + tin[0]=tin[1]=0;
1.151 + }