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/* crypto/dh/dhtest.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.]
*/
/* Until the key-gen callbacks are modified to use newer prototypes, we allow
* deprecated functions for openssl-internal code */
#ifdef OPENSSL_NO_DEPRECATED
#undef OPENSSL_NO_DEPRECATED
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../e_os.h"
#include <openssl/crypto.h>
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/rand.h>
#include <openssl/err.h>
#ifdef OPENSSL_NO_DH
int main(int argc, char *argv[])
{
printf("No DH support\n");
return(0);
}
#else
#include <openssl/dh.h>
#ifdef OPENSSL_SYS_WIN16
#define MS_CALLBACK _far _loadds
#else
#define MS_CALLBACK
#endif
static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg);
static const char rnd_seed[] = "string to make the random number generator think it has entropy";
int main(int argc, char *argv[])
{
BN_GENCB _cb;
DH *a;
DH *b=NULL;
char buf[12];
unsigned char *abuf=NULL,*bbuf=NULL;
int i,alen,blen,aout,bout,ret=1;
BIO *out;
CRYPTO_malloc_debug_init();
CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL);
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
#ifdef OPENSSL_SYS_WIN32
CRYPTO_malloc_init();
#endif
RAND_seed(rnd_seed, sizeof rnd_seed);
out=BIO_new(BIO_s_file());
if (out == NULL) EXIT(1);
BIO_set_fp(out,stdout,BIO_NOCLOSE);
BN_GENCB_set(&_cb, &cb, out);
if(((a = DH_new()) == NULL) || !DH_generate_parameters_ex(a, 64,
DH_GENERATOR_5, &_cb))
goto err;
if (!DH_check(a, &i)) goto err;
if (i & DH_CHECK_P_NOT_PRIME)
BIO_puts(out, "p value is not prime\n");
if (i & DH_CHECK_P_NOT_SAFE_PRIME)
BIO_puts(out, "p value is not a safe prime\n");
if (i & DH_UNABLE_TO_CHECK_GENERATOR)
BIO_puts(out, "unable to check the generator value\n");
if (i & DH_NOT_SUITABLE_GENERATOR)
BIO_puts(out, "the g value is not a generator\n");
BIO_puts(out,"\np =");
BN_print(out,a->p);
BIO_puts(out,"\ng =");
BN_print(out,a->g);
BIO_puts(out,"\n");
b=DH_new();
if (b == NULL) goto err;
b->p=BN_dup(a->p);
b->g=BN_dup(a->g);
if ((b->p == NULL) || (b->g == NULL)) goto err;
/* Set a to run with normal modexp and b to use constant time */
a->flags &= ~DH_FLAG_NO_EXP_CONSTTIME;
b->flags |= DH_FLAG_NO_EXP_CONSTTIME;
if (!DH_generate_key(a)) goto err;
BIO_puts(out,"pri 1=");
BN_print(out,a->priv_key);
BIO_puts(out,"\npub 1=");
BN_print(out,a->pub_key);
BIO_puts(out,"\n");
if (!DH_generate_key(b)) goto err;
BIO_puts(out,"pri 2=");
BN_print(out,b->priv_key);
BIO_puts(out,"\npub 2=");
BN_print(out,b->pub_key);
BIO_puts(out,"\n");
alen=DH_size(a);
abuf=(unsigned char *)OPENSSL_malloc(alen);
aout=DH_compute_key(abuf,b->pub_key,a);
BIO_puts(out,"key1 =");
for (i=0; i<aout; i++)
{
sprintf(buf,"%02X",abuf[i]);
BIO_puts(out,buf);
}
BIO_puts(out,"\n");
blen=DH_size(b);
bbuf=(unsigned char *)OPENSSL_malloc(blen);
bout=DH_compute_key(bbuf,a->pub_key,b);
BIO_puts(out,"key2 =");
for (i=0; i<bout; i++)
{
sprintf(buf,"%02X",bbuf[i]);
BIO_puts(out,buf);
}
BIO_puts(out,"\n");
if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0))
{
fprintf(stderr,"Error in DH routines\n");
ret=1;
}
else
ret=0;
err:
ERR_print_errors_fp(stderr);
if (abuf != NULL) OPENSSL_free(abuf);
if (bbuf != NULL) OPENSSL_free(bbuf);
if(b != NULL) DH_free(b);
if(a != NULL) DH_free(a);
BIO_free(out);
#ifdef OPENSSL_SYS_NETWARE
if (ret) printf("ERROR: %d\n", ret);
#endif
EXIT(ret);
return(ret);
}
static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg)
{
char c='*';
if (p == 0) c='.';
if (p == 1) c='+';
if (p == 2) c='*';
if (p == 3) c='\n';
BIO_write(arg->arg,&c,1);
(void)BIO_flush(arg->arg);
#ifdef LINT
p=n;
#endif
return 1;
}
#endif
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