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Diffstat (limited to 'openssl/crypto/rc4/rc4_skey.c')
| -rw-r--r-- | openssl/crypto/rc4/rc4_skey.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/openssl/crypto/rc4/rc4_skey.c b/openssl/crypto/rc4/rc4_skey.c deleted file mode 100644 index b22c40b0..00000000 --- a/openssl/crypto/rc4/rc4_skey.c +++ /dev/null @@ -1,150 +0,0 @@ -/* crypto/rc4/rc4_skey.c */ -/* 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 <openssl/rc4.h> -#include "rc4_locl.h" -#include <openssl/opensslv.h> - -const char RC4_version[]="RC4" OPENSSL_VERSION_PTEXT; - -const char *RC4_options(void) - { -#ifdef RC4_INDEX - if (sizeof(RC4_INT) == 1) - return("rc4(idx,char)"); - else - return("rc4(idx,int)"); -#else - if (sizeof(RC4_INT) == 1) - return("rc4(ptr,char)"); - else - return("rc4(ptr,int)"); -#endif - } - -/* RC4 as implemented from a posting from - * Newsgroups: sci.crypt - * From: sterndark@netcom.com (David Sterndark) - * Subject: RC4 Algorithm revealed. - * Message-ID: <sternCvKL4B.Hyy@netcom.com> - * Date: Wed, 14 Sep 1994 06:35:31 GMT - */ - -void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data) - { - register RC4_INT tmp; - register int id1,id2; - register RC4_INT *d; - unsigned int i; - - d= &(key->data[0]); - key->x = 0; - key->y = 0; - id1=id2=0; - -#define SK_LOOP(d,n) { \ - tmp=d[(n)]; \ - id2 = (data[id1] + tmp + id2) & 0xff; \ - if (++id1 == len) id1=0; \ - d[(n)]=d[id2]; \ - d[id2]=tmp; } - -#if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) -# if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \ - defined(__INTEL__) || \ - defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) - if (sizeof(RC4_INT) > 1) { - /* - * Unlike all other x86 [and x86_64] implementations, - * Intel P4 core [including EM64T] was found to perform - * poorly with wider RC4_INT. Performance improvement - * for IA-32 hand-coded assembler turned out to be 2.8x - * if re-coded for RC4_CHAR! It's however inappropriate - * to just switch to RC4_CHAR for x86[_64], as non-P4 - * implementations suffer from significant performance - * losses then, e.g. PIII exhibits >2x deterioration, - * and so does Opteron. In order to assure optimal - * all-round performance, let us [try to] detect P4 at - * run-time by checking upon HTT bit in CPU capability - * vector and set up compressed key schedule, which is - * recognized by correspondingly updated assembler - * module... - * <appro@fy.chalmers.se> - */ - if (OPENSSL_ia32cap_P & (1<<28)) { - unsigned char *cp=(unsigned char *)d; - - for (i=0;i<256;i++) cp[i]=i; - for (i=0;i<256;i++) SK_LOOP(cp,i); - /* mark schedule as compressed! */ - d[256/sizeof(RC4_INT)]=-1; - return; - } - } -# endif -#endif - for (i=0; i < 256; i++) d[i]=i; - for (i=0; i < 256; i+=4) - { - SK_LOOP(d,i+0); - SK_LOOP(d,i+1); - SK_LOOP(d,i+2); - SK_LOOP(d,i+3); - } - } - |