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 #include <openssl/rand.h>
  69
  70 #ifdef OPENSSL_NO_DH
  71 int main(int argc, char *argv[])
  72 {
  73     printf("No DH support\n");
  74     return(0);
  75 }
  76 #else
  77 #include <openssl/dh.h>
  78
  79 #ifdef WIN16
  80 #define MS_CALLBACK     _far _loadds
  81 #else
  82 #define MS_CALLBACK
  83 #endif
  84
  85 static void MS_CALLBACK cb(int p, int n, void *arg);
  86 #ifdef OPENSSL_NO_STDIO
  87 #define APPS_WIN16
  88 #include "bss_file.c"
  89 #endif
  90
  91 static const char rnd_seed[] = "string to make the random number generator think it has entropy";
  92
  93 int main(int argc, char *argv[])
  94         {
  95         DH *a;
  96         DH *b=NULL;
  97         char buf[12];
  98         unsigned char *abuf=NULL,*bbuf=NULL;
  99         int i,alen,blen,aout,bout,ret=1;
 100         BIO *out;
 101
 102 #ifdef WIN32
 103         CRYPTO_malloc_init();
 104 #endif
 105
 106         RAND_seed(rnd_seed, sizeof rnd_seed);
 107
 108         out=BIO_new(BIO_s_file());
 109         if (out == NULL) exit(1);
 110         BIO_set_fp(out,stdout,BIO_NOCLOSE);
 111
 112         a=DH_generate_parameters(64,DH_GENERATOR_5,cb,out);
 113         if (a == NULL) goto err;
 114
 115         BIO_puts(out,"\np    =");
 116         BN_print(out,a->p);
 117         BIO_puts(out,"\ng    =");
 118         BN_print(out,a->g);
 119         BIO_puts(out,"\n");
 120
 121         b=DH_new();
 122         if (b == NULL) goto err;
 123
 124         b->p=BN_dup(a->p);
 125         b->g=BN_dup(a->g);
 126         if ((b->p == NULL) || (b->g == NULL)) goto err;
 127
 128         if (!DH_generate_key(a)) goto err;
 129         BIO_puts(out,"pri 1=");
 130         BN_print(out,a->priv_key);
 131         BIO_puts(out,"\npub 1=");
 132         BN_print(out,a->pub_key);
 133         BIO_puts(out,"\n");
 134
 135         if (!DH_generate_key(b)) goto err;
 136         BIO_puts(out,"pri 2=");
 137         BN_print(out,b->priv_key);
 138         BIO_puts(out,"\npub 2=");
 139         BN_print(out,b->pub_key);
 140         BIO_puts(out,"\n");
 141
 142         alen=DH_size(a);
 143         abuf=(unsigned char *)OPENSSL_malloc(alen);
 144         aout=DH_compute_key(abuf,b->pub_key,a);
 145
 146         BIO_puts(out,"key1 =");
 147         for (i=0; i<aout; i++)
 148                 {
 149                 sprintf(buf,"%02X",abuf[i]);
 150                 BIO_puts(out,buf);
 151                 }
 152         BIO_puts(out,"\n");
 153
 154         blen=DH_size(b);
 155         bbuf=(unsigned char *)OPENSSL_malloc(blen);
 156         bout=DH_compute_key(bbuf,a->pub_key,b);
 157
 158         BIO_puts(out,"key2 =");
 159         for (i=0; i<bout; i++)
 160                 {
 161                 sprintf(buf,"%02X",bbuf[i]);
 162                 BIO_puts(out,buf);
 163                 }
 164         BIO_puts(out,"\n");
 165         if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0))
 166                 {
 167                 fprintf(stderr,"Error in DH routines\n");
 168                 ret=1;
 169                 }
 170         else
 171                 ret=0;
 172 err:
 173         if (abuf != NULL) OPENSSL_free(abuf);
 174         if (bbuf != NULL) OPENSSL_free(bbuf);
 175         if(b != NULL) DH_free(b);
 176         if(a != NULL) DH_free(a);
 177         BIO_free(out);
 178         exit(ret);
 179         return(ret);
 180         }
 181
 182 static void MS_CALLBACK cb(int p, int n, void *arg)
 183         {
 184         char c='*';
 185
 186         if (p == 0) c='.';
 187         if (p == 1) c='+';
 188         if (p == 2) c='*';
 189         if (p == 3) c='\n';
 190         BIO_write((BIO *)arg,&c,1);
 191         (void)BIO_flush((BIO *)arg);
 192 #ifdef LINT
 193         p=n;
 194 #endif
 195         }
 196 #endif