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 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
  60  * deprecated functions for openssl-internal code */
  61 #ifdef OPENSSL_NO_DEPRECATED
  62 #undef OPENSSL_NO_DEPRECATED
  63 #endif
  64
  65 #include <stdio.h>
  66 #include <stdlib.h>
  67 #include <string.h>
  68
  69 #include "../e_os.h"
  70
  71 #include <openssl/crypto.h>
  72 #include <openssl/bio.h>
  73 #include <openssl/bn.h>
  74 #include <openssl/rand.h>
  75 #include <openssl/err.h>
  76
  77 #ifdef OPENSSL_NO_DH
  78 int main(int argc, char *argv[])
  79 {
  80     printf("No DH support\n");
  81     return(0);
  82 }
  83 #else
  84 #include <openssl/dh.h>
  85
  86 #ifdef OPENSSL_SYS_WIN16
  87 #define MS_CALLBACK     _far _loadds
  88 #else
  89 #define MS_CALLBACK
  90 #endif
  91
  92 static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg);
  93
  94 static const char rnd_seed[] = "string to make the random number generator think it has entropy";
  95
  96 int main(int argc, char *argv[])
  97         {
  98         BN_GENCB _cb;
  99         DH *a;
 100         DH *b=NULL;
 101         char buf[12];
 102         unsigned char *abuf=NULL,*bbuf=NULL;
 103         int i,alen,blen,aout,bout,ret=1;
 104         BIO *out;
 105
 106         CRYPTO_malloc_debug_init();
 107         CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL);
 108         CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
 109
 110 #ifdef OPENSSL_SYS_WIN32
 111         CRYPTO_malloc_init();
 112 #endif
 113
 114         RAND_seed(rnd_seed, sizeof rnd_seed);
 115
 116         out=BIO_new(BIO_s_file());
 117         if (out == NULL) EXIT(1);
 118         BIO_set_fp(out,stdout,BIO_NOCLOSE);
 119
 120         BN_GENCB_set(&_cb, &cb, out);
 121         if(((a = DH_new()) == NULL) || !DH_generate_parameters_ex(a, 64,
 122                                 DH_GENERATOR_5, &_cb))
 123                 goto err;
 124
 125         if (!DH_check(a, &i)) goto err;
 126         if (i & DH_CHECK_P_NOT_PRIME)
 127                 BIO_puts(out, "p value is not prime\n");
 128         if (i & DH_CHECK_P_NOT_SAFE_PRIME)
 129                 BIO_puts(out, "p value is not a safe prime\n");
 130         if (i & DH_UNABLE_TO_CHECK_GENERATOR)
 131                 BIO_puts(out, "unable to check the generator value\n");
 132         if (i & DH_NOT_SUITABLE_GENERATOR)
 133                 BIO_puts(out, "the g value is not a generator\n");
 134
 135         BIO_puts(out,"\np    =");
 136         BN_print(out,a->p);
 137         BIO_puts(out,"\ng    =");
 138         BN_print(out,a->g);
 139         BIO_puts(out,"\n");
 140
 141         b=DH_new();
 142         if (b == NULL) goto err;
 143
 144         b->p=BN_dup(a->p);
 145         b->g=BN_dup(a->g);
 146         if ((b->p == NULL) || (b->g == NULL)) goto err;
 147
 148         if (!DH_generate_key(a)) goto err;
 149         BIO_puts(out,"pri 1=");
 150         BN_print(out,a->priv_key);
 151         BIO_puts(out,"\npub 1=");
 152         BN_print(out,a->pub_key);
 153         BIO_puts(out,"\n");
 154
 155         if (!DH_generate_key(b)) goto err;
 156         BIO_puts(out,"pri 2=");
 157         BN_print(out,b->priv_key);
 158         BIO_puts(out,"\npub 2=");
 159         BN_print(out,b->pub_key);
 160         BIO_puts(out,"\n");
 161
 162         alen=DH_size(a);
 163         abuf=(unsigned char *)OPENSSL_malloc(alen);
 164         aout=DH_compute_key(abuf,b->pub_key,a);
 165
 166         BIO_puts(out,"key1 =");
 167         for (i=0; i<aout; i++)
 168                 {
 169                 sprintf(buf,"%02X",abuf[i]);
 170                 BIO_puts(out,buf);
 171                 }
 172         BIO_puts(out,"\n");
 173
 174         blen=DH_size(b);
 175         bbuf=(unsigned char *)OPENSSL_malloc(blen);
 176         bout=DH_compute_key(bbuf,a->pub_key,b);
 177
 178         BIO_puts(out,"key2 =");
 179         for (i=0; i<bout; i++)
 180                 {
 181                 sprintf(buf,"%02X",bbuf[i]);
 182                 BIO_puts(out,buf);
 183                 }
 184         BIO_puts(out,"\n");
 185         if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0))
 186                 {
 187                 fprintf(stderr,"Error in DH routines\n");
 188                 ret=1;
 189                 }
 190         else
 191                 ret=0;
 192 err:
 193         ERR_print_errors_fp(stderr);
 194
 195         if (abuf != NULL) OPENSSL_free(abuf);
 196         if (bbuf != NULL) OPENSSL_free(bbuf);
 197         if(b != NULL) DH_free(b);
 198         if(a != NULL) DH_free(a);
 199         BIO_free(out);
 200 #ifdef OPENSSL_SYS_NETWARE
 201     if (ret) printf("ERROR: %d\n", ret);
 202 #endif
 203         EXIT(ret);
 204         return(ret);
 205         }
 206
 207 static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg)
 208         {
 209         char c='*';
 210
 211         if (p == 0) c='.';
 212         if (p == 1) c='+';
 213         if (p == 2) c='*';
 214         if (p == 3) c='\n';
 215         BIO_write(arg->arg,&c,1);
 216         (void)BIO_flush(arg->arg);
 217 #ifdef LINT
 218         p=n;
 219 #endif
 220         return 1;
 221         }
 222 #endif