sl@0: /* crypto/rc4/rc4.c */ sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) sl@0: * All rights reserved. sl@0: * sl@0: * This package is an SSL implementation written sl@0: * by Eric Young (eay@cryptsoft.com). sl@0: * The implementation was written so as to conform with Netscapes SSL. sl@0: * sl@0: * This library is free for commercial and non-commercial use as long as sl@0: * the following conditions are aheared to. The following conditions sl@0: * apply to all code found in this distribution, be it the RC4, RSA, sl@0: * lhash, DES, etc., code; not just the SSL code. The SSL documentation sl@0: * included with this distribution is covered by the same copyright terms sl@0: * except that the holder is Tim Hudson (tjh@cryptsoft.com). sl@0: * sl@0: * Copyright remains Eric Young's, and as such any Copyright notices in sl@0: * the code are not to be removed. sl@0: * If this package is used in a product, Eric Young should be given attribution sl@0: * as the author of the parts of the library used. sl@0: * This can be in the form of a textual message at program startup or sl@0: * in documentation (online or textual) provided with the package. sl@0: * sl@0: * Redistribution and use in source and binary forms, with or without sl@0: * modification, are permitted provided that the following conditions sl@0: * are met: sl@0: * 1. Redistributions of source code must retain the copyright sl@0: * notice, this list of conditions and the following disclaimer. sl@0: * 2. Redistributions in binary form must reproduce the above copyright sl@0: * notice, this list of conditions and the following disclaimer in the sl@0: * documentation and/or other materials provided with the distribution. sl@0: * 3. All advertising materials mentioning features or use of this software sl@0: * must display the following acknowledgement: sl@0: * "This product includes cryptographic software written by sl@0: * Eric Young (eay@cryptsoft.com)" sl@0: * The word 'cryptographic' can be left out if the rouines from the library sl@0: * being used are not cryptographic related :-). sl@0: * 4. If you include any Windows specific code (or a derivative thereof) from sl@0: * the apps directory (application code) you must include an acknowledgement: sl@0: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" sl@0: * sl@0: * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND sl@0: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE sl@0: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE sl@0: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE sl@0: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL sl@0: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS sl@0: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) sl@0: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT sl@0: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY sl@0: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF sl@0: * SUCH DAMAGE. sl@0: * sl@0: * The licence and distribution terms for any publically available version or sl@0: * derivative of this code cannot be changed. i.e. this code cannot simply be sl@0: * copied and put under another distribution licence sl@0: * [including the GNU Public Licence.] sl@0: */ sl@0: sl@0: #include sl@0: #include sl@0: #include sl@0: #include sl@0: #include sl@0: sl@0: char *usage[]={ sl@0: "usage: rc4 args\n", sl@0: "\n", sl@0: " -in arg - input file - default stdin\n", sl@0: " -out arg - output file - default stdout\n", sl@0: " -key key - password\n", sl@0: NULL sl@0: }; sl@0: sl@0: int main(int argc, char *argv[]) sl@0: { sl@0: FILE *in=NULL,*out=NULL; sl@0: char *infile=NULL,*outfile=NULL,*keystr=NULL; sl@0: RC4_KEY key; sl@0: char buf[BUFSIZ]; sl@0: int badops=0,i; sl@0: char **pp; sl@0: unsigned char md[MD5_DIGEST_LENGTH]; sl@0: sl@0: argc--; sl@0: argv++; sl@0: while (argc >= 1) sl@0: { sl@0: if (strcmp(*argv,"-in") == 0) sl@0: { sl@0: if (--argc < 1) goto bad; sl@0: infile= *(++argv); sl@0: } sl@0: else if (strcmp(*argv,"-out") == 0) sl@0: { sl@0: if (--argc < 1) goto bad; sl@0: outfile= *(++argv); sl@0: } sl@0: else if (strcmp(*argv,"-key") == 0) sl@0: { sl@0: if (--argc < 1) goto bad; sl@0: keystr= *(++argv); sl@0: } sl@0: else sl@0: { sl@0: fprintf(stderr,"unknown option %s\n",*argv); sl@0: badops=1; sl@0: break; sl@0: } sl@0: argc--; sl@0: argv++; sl@0: } sl@0: sl@0: if (badops) sl@0: { sl@0: bad: sl@0: for (pp=usage; (*pp != NULL); pp++) sl@0: fprintf(stderr,"%s",*pp); sl@0: exit(1); sl@0: } sl@0: sl@0: if (infile == NULL) sl@0: in=stdin; sl@0: else sl@0: { sl@0: in=fopen(infile,"r"); sl@0: if (in == NULL) sl@0: { sl@0: perror("open"); sl@0: exit(1); sl@0: } sl@0: sl@0: } sl@0: if (outfile == NULL) sl@0: out=stdout; sl@0: else sl@0: { sl@0: out=fopen(outfile,"w"); sl@0: if (out == NULL) sl@0: { sl@0: perror("open"); sl@0: exit(1); sl@0: } sl@0: } sl@0: sl@0: #ifdef OPENSSL_SYS_MSDOS sl@0: /* This should set the file to binary mode. */ sl@0: { sl@0: #include sl@0: setmode(fileno(in),O_BINARY); sl@0: setmode(fileno(out),O_BINARY); sl@0: } sl@0: #endif sl@0: sl@0: if (keystr == NULL) sl@0: { /* get key */ sl@0: i=EVP_read_pw_string(buf,BUFSIZ,"Enter RC4 password:",0); sl@0: if (i != 0) sl@0: { sl@0: OPENSSL_cleanse(buf,BUFSIZ); sl@0: fprintf(stderr,"bad password read\n"); sl@0: exit(1); sl@0: } sl@0: keystr=buf; sl@0: } sl@0: sl@0: EVP_Digest((unsigned char *)keystr,strlen(keystr),md,NULL,EVP_md5(),NULL); sl@0: OPENSSL_cleanse(keystr,strlen(keystr)); sl@0: RC4_set_key(&key,MD5_DIGEST_LENGTH,md); sl@0: sl@0: for(;;) sl@0: { sl@0: i=fread(buf,1,BUFSIZ,in); sl@0: if (i == 0) break; sl@0: if (i < 0) sl@0: { sl@0: perror("read"); sl@0: exit(1); sl@0: } sl@0: RC4(&key,(unsigned int)i,(unsigned char *)buf, sl@0: (unsigned char *)buf); sl@0: i=fwrite(buf,(unsigned int)i,1,out); sl@0: if (i != 1) sl@0: { sl@0: perror("write"); sl@0: exit(1); sl@0: } sl@0: } sl@0: fclose(out); sl@0: fclose(in); sl@0: exit(0); sl@0: return(1); sl@0: } sl@0: