1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/rc4/rc4.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * All rights reserved. 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This package is an SSL implementation written 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * by Eric Young (eay@cryptsoft.com). 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The implementation was written so as to conform with Netscapes SSL. 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This library is free for commercial and non-commercial use as long as 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the following conditions are aheared to. The following conditions 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * apply to all code found in this distribution, be it the RC4, RSA, 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * included with this distribution is covered by the same copyright terms 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright remains Eric Young's, and as such any Copyright notices in 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the code are not to be removed. 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If this package is used in a product, Eric Young should be given attribution 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * as the author of the parts of the library used. 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This can be in the form of a textual message at program startup or 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in documentation (online or textual) provided with the package. 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the copyright 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in the 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * documentation and/or other materials provided with the distribution. 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this software 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * must display the following acknowledgement: 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes cryptographic software written by 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com)" 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The word 'cryptographic' can be left out if the rouines from the library 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * being used are not cryptographic related :-). 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. If you include any Windows specific code (or a derivative thereof) from 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the apps directory (application code) you must include an acknowledgement: 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SUCH DAMAGE. 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The licence and distribution terms for any publically available version or 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * derivative of this code cannot be changed. i.e. this code cannot simply be 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * copied and put under another distribution licence 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * [including the GNU Public Licence.] 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdlib.h> 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <string.h> 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/rc4.h> 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/evp.h> 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectchar *usage[]={ 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project"usage: rc4 args\n", 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project"\n", 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project" -in arg - input file - default stdin\n", 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project" -out arg - output file - default stdout\n", 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project" -key key - password\n", 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectNULL 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project}; 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint main(int argc, char *argv[]) 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project FILE *in=NULL,*out=NULL; 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project char *infile=NULL,*outfile=NULL,*keystr=NULL; 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RC4_KEY key; 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project char buf[BUFSIZ]; 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int badops=0,i; 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project char **pp; 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char md[MD5_DIGEST_LENGTH]; 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project argc--; 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project argv++; 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while (argc >= 1) 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (strcmp(*argv,"-in") == 0) 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (--argc < 1) goto bad; 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project infile= *(++argv); 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else if (strcmp(*argv,"-out") == 0) 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (--argc < 1) goto bad; 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project outfile= *(++argv); 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else if (strcmp(*argv,"-key") == 0) 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (--argc < 1) goto bad; 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project keystr= *(++argv); 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fprintf(stderr,"unknown option %s\n",*argv); 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project badops=1; 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project argc--; 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project argv++; 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (badops) 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectbad: 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (pp=usage; (*pp != NULL); pp++) 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fprintf(stderr,"%s",*pp); 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project exit(1); 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (infile == NULL) 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project in=stdin; 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project in=fopen(infile,"r"); 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (in == NULL) 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project perror("open"); 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project exit(1); 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (outfile == NULL) 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out=stdout; 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out=fopen(outfile,"w"); 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (out == NULL) 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project perror("open"); 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project exit(1); 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef OPENSSL_SYS_MSDOS 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* This should set the file to binary mode. */ 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <fcntl.h> 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project setmode(fileno(in),O_BINARY); 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project setmode(fileno(out),O_BINARY); 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (keystr == NULL) 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { /* get key */ 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=EVP_read_pw_string(buf,BUFSIZ,"Enter RC4 password:",0); 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i != 0) 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_cleanse(buf,BUFSIZ); 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fprintf(stderr,"bad password read\n"); 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project exit(1); 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project keystr=buf; 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_Digest((unsigned char *)keystr,strlen(keystr),md,NULL,EVP_md5(),NULL); 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_cleanse(keystr,strlen(keystr)); 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RC4_set_key(&key,MD5_DIGEST_LENGTH,md); 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for(;;) 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=fread(buf,1,BUFSIZ,in); 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i == 0) break; 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i < 0) 175656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project perror("read"); 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project exit(1); 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RC4(&key,(unsigned int)i,(unsigned char *)buf, 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project (unsigned char *)buf); 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=fwrite(buf,(unsigned int)i,1,out); 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i != 1) 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 184656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project perror("write"); 185656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project exit(1); 186656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 187656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 188656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fclose(out); 189656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fclose(in); 190656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project exit(0); 191656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(1); 192656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 193656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 194