source-engine/thirdparty/openssl/bugs/stream.c

/* bugs/stream.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 <openssl/rc4.h>
#ifdef OPENSSL_NO_DES
# include <des.h>
#else
# include <openssl/des.h>
#endif

/*
 * show how stream ciphers are not very good.  The mac has no affect on RC4
 * while it does for cfb DES
 */

main()
{
    fprintf(stderr, "rc4\n");
    rc4();
    fprintf(stderr, "cfb des\n");
    des();
}

int des()
{
    des_key_schedule ks;
    des_cblock iv, key;
    int num;
    static char *keystr = "01234567";
    static char *in1 = "0123456789ABCEDFdata 12345";
    static char *in2 = "9876543210abcdefdata 12345";
    unsigned char out[100];
    int i;

    des_set_key((des_cblock *)keystr, ks);

    num = 0;
    memset(iv, 0, 8);
    des_cfb64_encrypt(in1, out, 26, ks, (des_cblock *)iv, &num, 1);
    for (i = 0; i < 26; i++)
        fprintf(stderr, "%02X ", out[i]);
    fprintf(stderr, "\n");

    num = 0;
    memset(iv, 0, 8);
    des_cfb64_encrypt(in2, out, 26, ks, (des_cblock *)iv, &num, 1);
    for (i = 0; i < 26; i++)
        fprintf(stderr, "%02X ", out[i]);
    fprintf(stderr, "\n");
}

int rc4()
{
    static char *keystr = "0123456789abcdef";
    RC4_KEY key;
    unsigned char in[100], out[100];
    int i;

    RC4_set_key(&key, 16, keystr);
    in[0] = '\0';
    strcpy(in, "0123456789ABCEDFdata 12345");
    RC4(key, 26, in, out);

    for (i = 0; i < 26; i++)
        fprintf(stderr, "%02X ", out[i]);
    fprintf(stderr, "\n");

    RC4_set_key(&key, 16, keystr);
    in[0] = '\0';
    strcpy(in, "9876543210abcdefdata 12345");
    RC4(key, 26, in, out);

    for (i = 0; i < 26; i++)
        fprintf(stderr, "%02X ", out[i]);
    fprintf(stderr, "\n");
}