bugs/stream.c

   1 /* bugs/stream.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <openssl/rc4.h>
  61 #ifdef OPENSSL_NO_DES
  62 # include <des.h>
  63 #else
  64 # include <openssl/des.h>
  65 #endif
  66
  67 /*
  68  * show how stream ciphers are not very good.  The mac has no affect on RC4
  69  * while it does for cfb DES
  70  */
  71
  72 main()
  73 {
  74     fprintf(stderr, "rc4\n");
  75     rc4();
  76     fprintf(stderr, "cfb des\n");
  77     des();
  78 }
  79
  80 int des()
  81 {
  82     des_key_schedule ks;
  83     des_cblock iv, key;
  84     int num;
  85     static char *keystr = "01234567";
  86     static char *in1 = "0123456789ABCEDFdata 12345";
  87     static char *in2 = "9876543210abcdefdata 12345";
  88     unsigned char out[100];
  89     int i;
  90
  91     des_set_key((des_cblock *)keystr, ks);
  92
  93     num = 0;
  94     memset(iv, 0, 8);
  95     des_cfb64_encrypt(in1, out, 26, ks, (des_cblock *)iv, &num, 1);
  96     for (i = 0; i < 26; i++)
  97         fprintf(stderr, "%02X ", out[i]);
  98     fprintf(stderr, "\n");
  99
 100     num = 0;
 101     memset(iv, 0, 8);
 102     des_cfb64_encrypt(in2, out, 26, ks, (des_cblock *)iv, &num, 1);
 103     for (i = 0; i < 26; i++)
 104         fprintf(stderr, "%02X ", out[i]);
 105     fprintf(stderr, "\n");
 106 }
 107
 108 int rc4()
 109 {
 110     static char *keystr = "0123456789abcdef";
 111     RC4_KEY key;
 112     unsigned char in[100], out[100];
 113     int i;
 114
 115     RC4_set_key(&key, 16, keystr);
 116     in[0] = '\0';
 117     strcpy(in, "0123456789ABCEDFdata 12345");
 118     RC4(key, 26, in, out);
 119
 120     for (i = 0; i < 26; i++)
 121         fprintf(stderr, "%02X ", out[i]);
 122     fprintf(stderr, "\n");
 123
 124     RC4_set_key(&key, 16, keystr);
 125     in[0] = '\0';
 126     strcpy(in, "9876543210abcdefdata 12345");
 127     RC4(key, 26, in, out);
 128
 129     for (i = 0; i < 26; i++)
 130         fprintf(stderr, "%02X ", out[i]);
 131     fprintf(stderr, "\n");
 132 }