1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/rc4/rc4_skey.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,150 @@
1.4 +/* crypto/rc4/rc4_skey.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/rc4.h>
1.63 +#include "rc4_locl.h"
1.64 +#include <openssl/opensslv.h>
1.65 +
1.66 +const char RC4_version[]="RC4" OPENSSL_VERSION_PTEXT;
1.67 +
1.68 +EXPORT_C const char *RC4_options(void)
1.69 + {
1.70 +#ifdef RC4_INDEX
1.71 + if (sizeof(RC4_INT) == 1)
1.72 + return("rc4(idx,char)");
1.73 + else
1.74 + return("rc4(idx,int)");
1.75 +#else
1.76 + if (sizeof(RC4_INT) == 1)
1.77 + return("rc4(ptr,char)");
1.78 + else
1.79 + return("rc4(ptr,int)");
1.80 +#endif
1.81 + }
1.82 +
1.83 +/* RC4 as implemented from a posting from
1.84 + * Newsgroups: sci.crypt
1.85 + * From: sterndark@netcom.com (David Sterndark)
1.86 + * Subject: RC4 Algorithm revealed.
1.87 + * Message-ID: <sternCvKL4B.Hyy@netcom.com>
1.88 + * Date: Wed, 14 Sep 1994 06:35:31 GMT
1.89 + */
1.90 +
1.91 +EXPORT_C void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data)
1.92 + {
1.93 + register RC4_INT tmp;
1.94 + register int id1,id2;
1.95 + register RC4_INT *d;
1.96 + unsigned int i;
1.97 +
1.98 + d= &(key->data[0]);
1.99 + key->x = 0;
1.100 + key->y = 0;
1.101 + id1=id2=0;
1.102 +
1.103 +#define SK_LOOP(d,n) { \
1.104 + tmp=d[(n)]; \
1.105 + id2 = (data[id1] + tmp + id2) & 0xff; \
1.106 + if (++id1 == len) id1=0; \
1.107 + d[(n)]=d[id2]; \
1.108 + d[id2]=tmp; }
1.109 +
1.110 +#if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM)
1.111 +# if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
1.112 + defined(__INTEL__) || \
1.113 + defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
1.114 + if (sizeof(RC4_INT) > 1) {
1.115 + /*
1.116 + * Unlike all other x86 [and x86_64] implementations,
1.117 + * Intel P4 core [including EM64T] was found to perform
1.118 + * poorly with wider RC4_INT. Performance improvement
1.119 + * for IA-32 hand-coded assembler turned out to be 2.8x
1.120 + * if re-coded for RC4_CHAR! It's however inappropriate
1.121 + * to just switch to RC4_CHAR for x86[_64], as non-P4
1.122 + * implementations suffer from significant performance
1.123 + * losses then, e.g. PIII exhibits >2x deterioration,
1.124 + * and so does Opteron. In order to assure optimal
1.125 + * all-round performance, let us [try to] detect P4 at
1.126 + * run-time by checking upon HTT bit in CPU capability
1.127 + * vector and set up compressed key schedule, which is
1.128 + * recognized by correspondingly updated assembler
1.129 + * module...
1.130 + * <appro@fy.chalmers.se>
1.131 + */
1.132 + if (OPENSSL_ia32cap_P & (1<<28)) {
1.133 + unsigned char *cp=(unsigned char *)d;
1.134 +
1.135 + for (i=0;i<256;i++) cp[i]=i;
1.136 + for (i=0;i<256;i++) SK_LOOP(cp,i);
1.137 + /* mark schedule as compressed! */
1.138 + d[256/sizeof(RC4_INT)]=-1;
1.139 + return;
1.140 + }
1.141 + }
1.142 +# endif
1.143 +#endif
1.144 + for (i=0; i < 256; i++) d[i]=i;
1.145 + for (i=0; i < 256; i+=4)
1.146 + {
1.147 + SK_LOOP(d,i+0);
1.148 + SK_LOOP(d,i+1);
1.149 + SK_LOOP(d,i+2);
1.150 + SK_LOOP(d,i+3);
1.151 + }
1.152 + }
1.153 +