1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/rc2/rc2_cbc.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,226 @@
1.4 +/* crypto/rc2/rc2_cbc.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 +EXPORT_C void RC2_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
1.66 + RC2_KEY *ks, unsigned char *iv, int encrypt)
1.67 + {
1.68 + register unsigned long tin0,tin1;
1.69 + register unsigned long tout0,tout1,xor0,xor1;
1.70 + register long l=length;
1.71 + unsigned long tin[2];
1.72 +
1.73 + if (encrypt)
1.74 + {
1.75 + c2l(iv,tout0);
1.76 + c2l(iv,tout1);
1.77 + iv-=8;
1.78 + for (l-=8; l>=0; l-=8)
1.79 + {
1.80 + c2l(in,tin0);
1.81 + c2l(in,tin1);
1.82 + tin0^=tout0;
1.83 + tin1^=tout1;
1.84 + tin[0]=tin0;
1.85 + tin[1]=tin1;
1.86 + RC2_encrypt(tin,ks);
1.87 + tout0=tin[0]; l2c(tout0,out);
1.88 + tout1=tin[1]; l2c(tout1,out);
1.89 + }
1.90 + if (l != -8)
1.91 + {
1.92 + c2ln(in,tin0,tin1,l+8);
1.93 + tin0^=tout0;
1.94 + tin1^=tout1;
1.95 + tin[0]=tin0;
1.96 + tin[1]=tin1;
1.97 + RC2_encrypt(tin,ks);
1.98 + tout0=tin[0]; l2c(tout0,out);
1.99 + tout1=tin[1]; l2c(tout1,out);
1.100 + }
1.101 + l2c(tout0,iv);
1.102 + l2c(tout1,iv);
1.103 + }
1.104 + else
1.105 + {
1.106 + c2l(iv,xor0);
1.107 + c2l(iv,xor1);
1.108 + iv-=8;
1.109 + for (l-=8; l>=0; l-=8)
1.110 + {
1.111 + c2l(in,tin0); tin[0]=tin0;
1.112 + c2l(in,tin1); tin[1]=tin1;
1.113 + RC2_decrypt(tin,ks);
1.114 + tout0=tin[0]^xor0;
1.115 + tout1=tin[1]^xor1;
1.116 + l2c(tout0,out);
1.117 + l2c(tout1,out);
1.118 + xor0=tin0;
1.119 + xor1=tin1;
1.120 + }
1.121 + if (l != -8)
1.122 + {
1.123 + c2l(in,tin0); tin[0]=tin0;
1.124 + c2l(in,tin1); tin[1]=tin1;
1.125 + RC2_decrypt(tin,ks);
1.126 + tout0=tin[0]^xor0;
1.127 + tout1=tin[1]^xor1;
1.128 + l2cn(tout0,tout1,out,l+8);
1.129 + xor0=tin0;
1.130 + xor1=tin1;
1.131 + }
1.132 + l2c(xor0,iv);
1.133 + l2c(xor1,iv);
1.134 + }
1.135 + tin0=tin1=tout0=tout1=xor0=xor1=0;
1.136 + tin[0]=tin[1]=0;
1.137 + }
1.138 +
1.139 +EXPORT_C void RC2_encrypt(unsigned long *d, RC2_KEY *key)
1.140 + {
1.141 + int i,n;
1.142 + register RC2_INT *p0,*p1;
1.143 + register RC2_INT x0,x1,x2,x3,t;
1.144 + unsigned long l;
1.145 +
1.146 + l=d[0];
1.147 + x0=(RC2_INT)l&0xffff;
1.148 + x1=(RC2_INT)(l>>16L);
1.149 + l=d[1];
1.150 + x2=(RC2_INT)l&0xffff;
1.151 + x3=(RC2_INT)(l>>16L);
1.152 +
1.153 + n=3;
1.154 + i=5;
1.155 +
1.156 + p0=p1= &(key->data[0]);
1.157 + for (;;)
1.158 + {
1.159 + t=(x0+(x1& ~x3)+(x2&x3)+ *(p0++))&0xffff;
1.160 + x0=(t<<1)|(t>>15);
1.161 + t=(x1+(x2& ~x0)+(x3&x0)+ *(p0++))&0xffff;
1.162 + x1=(t<<2)|(t>>14);
1.163 + t=(x2+(x3& ~x1)+(x0&x1)+ *(p0++))&0xffff;
1.164 + x2=(t<<3)|(t>>13);
1.165 + t=(x3+(x0& ~x2)+(x1&x2)+ *(p0++))&0xffff;
1.166 + x3=(t<<5)|(t>>11);
1.167 +
1.168 + if (--i == 0)
1.169 + {
1.170 + if (--n == 0) break;
1.171 + i=(n == 2)?6:5;
1.172 +
1.173 + x0+=p1[x3&0x3f];
1.174 + x1+=p1[x0&0x3f];
1.175 + x2+=p1[x1&0x3f];
1.176 + x3+=p1[x2&0x3f];
1.177 + }
1.178 + }
1.179 +
1.180 + d[0]=(unsigned long)(x0&0xffff)|((unsigned long)(x1&0xffff)<<16L);
1.181 + d[1]=(unsigned long)(x2&0xffff)|((unsigned long)(x3&0xffff)<<16L);
1.182 + }
1.183 +
1.184 +EXPORT_C void RC2_decrypt(unsigned long *d, RC2_KEY *key)
1.185 + {
1.186 + int i,n;
1.187 + register RC2_INT *p0,*p1;
1.188 + register RC2_INT x0,x1,x2,x3,t;
1.189 + unsigned long l;
1.190 +
1.191 + l=d[0];
1.192 + x0=(RC2_INT)l&0xffff;
1.193 + x1=(RC2_INT)(l>>16L);
1.194 + l=d[1];
1.195 + x2=(RC2_INT)l&0xffff;
1.196 + x3=(RC2_INT)(l>>16L);
1.197 +
1.198 + n=3;
1.199 + i=5;
1.200 +
1.201 + p0= &(key->data[63]);
1.202 + p1= &(key->data[0]);
1.203 + for (;;)
1.204 + {
1.205 + t=((x3<<11)|(x3>>5))&0xffff;
1.206 + x3=(t-(x0& ~x2)-(x1&x2)- *(p0--))&0xffff;
1.207 + t=((x2<<13)|(x2>>3))&0xffff;
1.208 + x2=(t-(x3& ~x1)-(x0&x1)- *(p0--))&0xffff;
1.209 + t=((x1<<14)|(x1>>2))&0xffff;
1.210 + x1=(t-(x2& ~x0)-(x3&x0)- *(p0--))&0xffff;
1.211 + t=((x0<<15)|(x0>>1))&0xffff;
1.212 + x0=(t-(x1& ~x3)-(x2&x3)- *(p0--))&0xffff;
1.213 +
1.214 + if (--i == 0)
1.215 + {
1.216 + if (--n == 0) break;
1.217 + i=(n == 2)?6:5;
1.218 +
1.219 + x3=(x3-p1[x2&0x3f])&0xffff;
1.220 + x2=(x2-p1[x1&0x3f])&0xffff;
1.221 + x1=(x1-p1[x0&0x3f])&0xffff;
1.222 + x0=(x0-p1[x3&0x3f])&0xffff;
1.223 + }
1.224 + }
1.225 +
1.226 + d[0]=(unsigned long)(x0&0xffff)|((unsigned long)(x1&0xffff)<<16L);
1.227 + d[1]=(unsigned long)(x2&0xffff)|((unsigned long)(x3&0xffff)<<16L);
1.228 + }
1.229 +