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-rw-r--r--openssl/crypto/rc4/rc4.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/openssl/crypto/rc4/rc4.c b/openssl/crypto/rc4/rc4.c
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+/* 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);
+ }
+