1*0Sstevel@tonic-gate /* crypto/rc4/rc4_skey.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate /* 60*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 61*0Sstevel@tonic-gate * Use is subject to license terms. 62*0Sstevel@tonic-gate */ 63*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate #include <openssl/rc4.h> 66*0Sstevel@tonic-gate #include "rc4_locl.h" 67*0Sstevel@tonic-gate #include <openssl/opensslv.h> 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate const char *RC4_version="RC4" OPENSSL_VERSION_PTEXT; 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate const char *RC4_options(void) 72*0Sstevel@tonic-gate { 73*0Sstevel@tonic-gate #ifdef RC4_INDEX 74*0Sstevel@tonic-gate if (sizeof(RC4_INT) == 1) 75*0Sstevel@tonic-gate return("rc4(idx,char)"); 76*0Sstevel@tonic-gate else 77*0Sstevel@tonic-gate return("rc4(idx,int)"); 78*0Sstevel@tonic-gate #else 79*0Sstevel@tonic-gate if (sizeof(RC4_INT) == 1) 80*0Sstevel@tonic-gate return("rc4(ptr,char)"); 81*0Sstevel@tonic-gate else 82*0Sstevel@tonic-gate return("rc4(ptr,int)"); 83*0Sstevel@tonic-gate #endif 84*0Sstevel@tonic-gate } 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate /* RC4 as implemented from a posting from 87*0Sstevel@tonic-gate * Newsgroups: sci.crypt 88*0Sstevel@tonic-gate * From: sterndark@netcom.com (David Sterndark) 89*0Sstevel@tonic-gate * Subject: RC4 Algorithm revealed. 90*0Sstevel@tonic-gate * Message-ID: <sternCvKL4B.Hyy@netcom.com> 91*0Sstevel@tonic-gate * Date: Wed, 14 Sep 1994 06:35:31 GMT 92*0Sstevel@tonic-gate */ 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data) 95*0Sstevel@tonic-gate { 96*0Sstevel@tonic-gate register RC4_INT tmp; 97*0Sstevel@tonic-gate register int id1,id2; 98*0Sstevel@tonic-gate register RC4_INT *d; 99*0Sstevel@tonic-gate unsigned int i; 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate #ifndef CRYPTO_UNLIMITED 102*0Sstevel@tonic-gate if (len > 16) 103*0Sstevel@tonic-gate len = 16; 104*0Sstevel@tonic-gate #endif /* CRYPTO_UNLIMITED */ 105*0Sstevel@tonic-gate d= &(key->data[0]); 106*0Sstevel@tonic-gate for (i=0; i<256; i++) 107*0Sstevel@tonic-gate d[i]=i; 108*0Sstevel@tonic-gate key->x = 0; 109*0Sstevel@tonic-gate key->y = 0; 110*0Sstevel@tonic-gate id1=id2=0; 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate #define SK_LOOP(n) { \ 113*0Sstevel@tonic-gate tmp=d[(n)]; \ 114*0Sstevel@tonic-gate id2 = (data[id1] + tmp + id2) & 0xff; \ 115*0Sstevel@tonic-gate if (++id1 == len) id1=0; \ 116*0Sstevel@tonic-gate d[(n)]=d[id2]; \ 117*0Sstevel@tonic-gate d[id2]=tmp; } 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate for (i=0; i < 256; i+=4) 120*0Sstevel@tonic-gate { 121*0Sstevel@tonic-gate SK_LOOP(i+0); 122*0Sstevel@tonic-gate SK_LOOP(i+1); 123*0Sstevel@tonic-gate SK_LOOP(i+2); 124*0Sstevel@tonic-gate SK_LOOP(i+3); 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate } 127*0Sstevel@tonic-gate 128