crypto/dh/dhtest.c

   1 /* crypto/dh/dhtest.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 <stdlib.h>
  61 #include <string.h>
  62 #ifdef WINDOWS
  63 #include "../bio/bss_file.c"
  64 #endif
  65 #include <openssl/crypto.h>
  66 #include <openssl/bio.h>
  67 #include <openssl/bn.h>
  68
  69 #ifdef NO_DH
  70 int main(int argc, char *argv[])
  71 {
  72     printf("No DH support\n");
  73     return(0);
  74 }
  75 #else
  76 #include <openssl/dh.h>
  77
  78 #ifdef WIN16
  79 #define MS_CALLBACK     _far _loadds
  80 #else
  81 #define MS_CALLBACK
  82 #endif
  83
  84 static void MS_CALLBACK cb(int p, int n, void *arg);
  85 #ifdef NO_STDIO
  86 #define APPS_WIN16
  87 #include "bss_file.c"
  88 #endif
  89
  90 BIO *out=NULL;
  91
  92 int main(int argc, char *argv[])
  93         {
  94         DH *a,*b;
  95         char buf[12];
  96         unsigned char *abuf=NULL,*bbuf=NULL;
  97         int i,alen,blen,aout,bout,ret=1;
  98
  99 #ifdef WIN32
 100         CRYPTO_malloc_init();
 101 #endif
 102
 103         out=BIO_new(BIO_s_file());
 104         if (out == NULL) exit(1);
 105         BIO_set_fp(out,stdout,BIO_NOCLOSE);
 106
 107         a=DH_generate_parameters(64,DH_GENERATOR_5,cb,out);
 108         if (a == NULL) goto err;
 109
 110         BIO_puts(out,"\np    =");
 111         BN_print(out,a->p);
 112         BIO_puts(out,"\ng    =");
 113         BN_print(out,a->g);
 114         BIO_puts(out,"\n");
 115
 116         b=DH_new();
 117         if (b == NULL) goto err;
 118
 119         b->p=BN_dup(a->p);
 120         b->g=BN_dup(a->g);
 121         if ((b->p == NULL) || (b->g == NULL)) goto err;
 122
 123         if (!DH_generate_key(a)) goto err;
 124         BIO_puts(out,"pri 1=");
 125         BN_print(out,a->priv_key);
 126         BIO_puts(out,"\npub 1=");
 127         BN_print(out,a->pub_key);
 128         BIO_puts(out,"\n");
 129
 130         if (!DH_generate_key(b)) goto err;
 131         BIO_puts(out,"pri 2=");
 132         BN_print(out,b->priv_key);
 133         BIO_puts(out,"\npub 2=");
 134         BN_print(out,b->pub_key);
 135         BIO_puts(out,"\n");
 136
 137         alen=DH_size(a);
 138         abuf=(unsigned char *)Malloc(alen);
 139         aout=DH_compute_key(abuf,b->pub_key,a);
 140
 141         BIO_puts(out,"key1 =");
 142         for (i=0; i<aout; i++)
 143                 {
 144                 sprintf(buf,"%02X",abuf[i]);
 145                 BIO_puts(out,buf);
 146                 }
 147         BIO_puts(out,"\n");
 148
 149         blen=DH_size(b);
 150         bbuf=(unsigned char *)Malloc(blen);
 151         bout=DH_compute_key(bbuf,a->pub_key,b);
 152
 153         BIO_puts(out,"key2 =");
 154         for (i=0; i<bout; i++)
 155                 {
 156                 sprintf(buf,"%02X",bbuf[i]);
 157                 BIO_puts(out,buf);
 158                 }
 159         BIO_puts(out,"\n");
 160         if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0))
 161                 {
 162                 fprintf(stderr,"Error in DH routines\n");
 163                 ret=1;
 164                 }
 165         else
 166                 ret=0;
 167 err:
 168         if (abuf != NULL) Free(abuf);
 169         if (bbuf != NULL) Free(bbuf);
 170         exit(ret);
 171         return(ret);
 172         }
 173
 174 static void MS_CALLBACK cb(int p, int n, void *arg)
 175         {
 176         char c='*';
 177
 178         if (p == 0) c='.';
 179         if (p == 1) c='+';
 180         if (p == 2) c='*';
 181         if (p == 3) c='\n';
 182         BIO_write((BIO *)arg,&c,1);
 183         BIO_flush((BIO *)arg);
 184 #ifdef LINT
 185         p=n;
 186 #endif
 187         }
 188 #endif