diff options
Diffstat (limited to 'openssl/crypto/rc4/rc4.c')
| -rw-r--r-- | openssl/crypto/rc4/rc4.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/openssl/crypto/rc4/rc4.c b/openssl/crypto/rc4/rc4.c new file mode 100644 index 00000000..c900b260 --- /dev/null +++ b/openssl/crypto/rc4/rc4.c @@ -0,0 +1,193 @@ +/* crypto/rc4/rc4.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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <openssl/rc4.h> +#include <openssl/evp.h> + +char *usage[]={ +"usage: rc4 args\n", +"\n", +" -in arg - input file - default stdin\n", +" -out arg - output file - default stdout\n", +" -key key - password\n", +NULL +}; + +int main(int argc, char *argv[]) + { + FILE *in=NULL,*out=NULL; + char *infile=NULL,*outfile=NULL,*keystr=NULL; + RC4_KEY key; + char buf[BUFSIZ]; + int badops=0,i; + char **pp; + unsigned char md[MD5_DIGEST_LENGTH]; + + argc--; + argv++; + while (argc >= 1) + { + if (strcmp(*argv,"-in") == 0) + { + if (--argc < 1) goto bad; + infile= *(++argv); + } + else if (strcmp(*argv,"-out") == 0) + { + if (--argc < 1) goto bad; + outfile= *(++argv); + } + else if (strcmp(*argv,"-key") == 0) + { + if (--argc < 1) goto bad; + keystr= *(++argv); + } + else + { + fprintf(stderr,"unknown option %s\n",*argv); + badops=1; + break; + } + argc--; + argv++; + } + + if (badops) + { +bad: + for (pp=usage; (*pp != NULL); pp++) + fprintf(stderr,"%s",*pp); + exit(1); + } + + if (infile == NULL) + in=stdin; + else + { + in=fopen(infile,"r"); + if (in == NULL) + { + perror("open"); + exit(1); + } + + } + if (outfile == NULL) + out=stdout; + else + { + out=fopen(outfile,"w"); + if (out == NULL) + { + perror("open"); + exit(1); + } + } + +#ifdef OPENSSL_SYS_MSDOS + /* This should set the file to binary mode. */ + { +#include <fcntl.h> + setmode(fileno(in),O_BINARY); + setmode(fileno(out),O_BINARY); + } +#endif + + if (keystr == NULL) + { /* get key */ + i=EVP_read_pw_string(buf,BUFSIZ,"Enter RC4 password:",0); + if (i != 0) + { + OPENSSL_cleanse(buf,BUFSIZ); + fprintf(stderr,"bad password read\n"); + exit(1); + } + keystr=buf; + } + + EVP_Digest((unsigned char *)keystr,strlen(keystr),md,NULL,EVP_md5(),NULL); + OPENSSL_cleanse(keystr,strlen(keystr)); + RC4_set_key(&key,MD5_DIGEST_LENGTH,md); + + for(;;) + { + i=fread(buf,1,BUFSIZ,in); + if (i == 0) break; + if (i < 0) + { + perror("read"); + exit(1); + } + RC4(&key,(unsigned int)i,(unsigned char *)buf, + (unsigned char *)buf); + i=fwrite(buf,(unsigned int)i,1,out); + if (i != 1) + { + perror("write"); + exit(1); + } + } + fclose(out); + fclose(in); + exit(0); + return(1); + } + |