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e9224c7177
key-generation and prime-checking functions. Rather than explicitly passing callback functions and caller-defined context data for the callbacks, a new structure BN_GENCB is defined that encapsulates this; a pointer to the structure is passed to all such functions instead. This wrapper structure allows the encapsulation of "old" and "new" style callbacks - "new" callbacks return a boolean result on the understanding that returning FALSE should terminate keygen/primality processing. The BN_GENCB abstraction will allow future callback modifications without needing to break binary compatibility nor change the API function prototypes. The new API functions have been given names ending in "_ex" and the old functions are implemented as wrappers to the new ones. The OPENSSL_NO_DEPRECATED symbol has been introduced so that, if defined, declaration of the older functions will be skipped. NB: Some openssl-internal code will stick with the older callbacks for now, so appropriate "#undef" logic will be put in place - this is in case the user is *building* openssl (rather than *including* its headers) with this symbol defined. There is another change in the new _ex functions; the key-generation functions do not return key structures but operate on structures passed by the caller, the return value is a boolean. This will allow for a smoother transition to having key-generation as "virtual function" in the various ***_METHOD tables.
226 lines
6.6 KiB
C
226 lines
6.6 KiB
C
/* crypto/dh/dhtest.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* Until the key-gen callbacks are modified to use newer prototypes, we allow
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* deprecated functions for openssl-internal code */
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#ifdef OPENSSL_NO_DEPRECATED
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#undef OPENSSL_NO_DEPRECATED
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../e_os.h"
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#ifdef OPENSSL_SYS_WINDOWS
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#include "../bio/bss_file.c"
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#endif
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#include <openssl/crypto.h>
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#include <openssl/bio.h>
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#include <openssl/bn.h>
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#include <openssl/rand.h>
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#include <openssl/err.h>
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#ifdef OPENSSL_NO_DH
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int main(int argc, char *argv[])
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{
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printf("No DH support\n");
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return(0);
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}
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#else
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#include <openssl/dh.h>
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#ifdef OPENSSL_SYS_WIN16
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#define MS_CALLBACK _far _loadds
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#else
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#define MS_CALLBACK
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#endif
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static void MS_CALLBACK cb(int p, int n, void *arg);
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#ifdef OPENSSL_NO_STDIO
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#define APPS_WIN16
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#include "bss_file.c"
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#endif
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static const char rnd_seed[] = "string to make the random number generator think it has entropy";
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int main(int argc, char *argv[])
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{
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DH *a;
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DH *b=NULL;
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char buf[12];
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unsigned char *abuf=NULL,*bbuf=NULL;
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int i,alen,blen,aout,bout,ret=1;
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BIO *out;
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CRYPTO_malloc_debug_init();
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CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL);
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CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
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#ifdef OPENSSL_SYS_WIN32
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CRYPTO_malloc_init();
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#endif
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RAND_seed(rnd_seed, sizeof rnd_seed);
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out=BIO_new(BIO_s_file());
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if (out == NULL) EXIT(1);
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BIO_set_fp(out,stdout,BIO_NOCLOSE);
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a=DH_generate_parameters(64,DH_GENERATOR_5,cb,out);
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if (a == NULL) goto err;
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if (!DH_check(a, &i)) goto err;
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if (i & DH_CHECK_P_NOT_PRIME)
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BIO_puts(out, "p value is not prime\n");
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if (i & DH_CHECK_P_NOT_SAFE_PRIME)
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BIO_puts(out, "p value is not a safe prime\n");
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if (i & DH_UNABLE_TO_CHECK_GENERATOR)
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BIO_puts(out, "unable to check the generator value\n");
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if (i & DH_NOT_SUITABLE_GENERATOR)
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BIO_puts(out, "the g value is not a generator\n");
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BIO_puts(out,"\np =");
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BN_print(out,a->p);
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BIO_puts(out,"\ng =");
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BN_print(out,a->g);
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BIO_puts(out,"\n");
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b=DH_new();
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if (b == NULL) goto err;
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b->p=BN_dup(a->p);
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b->g=BN_dup(a->g);
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if ((b->p == NULL) || (b->g == NULL)) goto err;
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if (!DH_generate_key(a)) goto err;
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BIO_puts(out,"pri 1=");
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BN_print(out,a->priv_key);
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BIO_puts(out,"\npub 1=");
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BN_print(out,a->pub_key);
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BIO_puts(out,"\n");
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if (!DH_generate_key(b)) goto err;
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BIO_puts(out,"pri 2=");
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BN_print(out,b->priv_key);
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BIO_puts(out,"\npub 2=");
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BN_print(out,b->pub_key);
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BIO_puts(out,"\n");
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alen=DH_size(a);
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abuf=(unsigned char *)OPENSSL_malloc(alen);
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aout=DH_compute_key(abuf,b->pub_key,a);
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BIO_puts(out,"key1 =");
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for (i=0; i<aout; i++)
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{
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sprintf(buf,"%02X",abuf[i]);
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BIO_puts(out,buf);
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}
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BIO_puts(out,"\n");
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blen=DH_size(b);
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bbuf=(unsigned char *)OPENSSL_malloc(blen);
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bout=DH_compute_key(bbuf,a->pub_key,b);
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BIO_puts(out,"key2 =");
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for (i=0; i<bout; i++)
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{
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sprintf(buf,"%02X",bbuf[i]);
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BIO_puts(out,buf);
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}
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BIO_puts(out,"\n");
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if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0))
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{
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fprintf(stderr,"Error in DH routines\n");
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ret=1;
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}
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else
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ret=0;
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err:
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ERR_print_errors_fp(stderr);
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if (abuf != NULL) OPENSSL_free(abuf);
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if (bbuf != NULL) OPENSSL_free(bbuf);
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if(b != NULL) DH_free(b);
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if(a != NULL) DH_free(a);
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BIO_free(out);
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CRYPTO_cleanup_all_ex_data();
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ERR_remove_state(0);
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CRYPTO_mem_leaks_fp(stderr);
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EXIT(ret);
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return(ret);
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}
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static void MS_CALLBACK cb(int p, int n, void *arg)
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{
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char c='*';
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if (p == 0) c='.';
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if (p == 1) c='+';
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if (p == 2) c='*';
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if (p == 3) c='\n';
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BIO_write((BIO *)arg,&c,1);
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(void)BIO_flush((BIO *)arg);
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#ifdef LINT
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p=n;
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#endif
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}
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#endif
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