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-rw-r--r--crypto/bn/exptest.c247
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diff --git a/crypto/bn/exptest.c b/crypto/bn/exptest.c
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-/* crypto/bn/exptest.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.]
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "../e_os.h"
-
-#include <openssl/bio.h>
-#include <openssl/bn.h>
-#include <openssl/rand.h>
-#include <openssl/err.h>
-
-#define NUM_BITS (BN_BITS*2)
-
-static const char rnd_seed[] = "string to make the random number generator think it has entropy";
-
-/* test_exp_mod_zero tests that x**0 mod 1 == 0. It returns zero on success. */
-static int test_exp_mod_zero() {
- BIGNUM a, p, m;
- BIGNUM r;
- BN_CTX *ctx = BN_CTX_new();
- int ret = 1;
-
- BN_init(&m);
- BN_one(&m);
-
- BN_init(&a);
- BN_one(&a);
-
- BN_init(&p);
- BN_zero(&p);
-
- BN_init(&r);
- BN_mod_exp(&r, &a, &p, &m, ctx);
- BN_CTX_free(ctx);
-
- if (BN_is_zero(&r))
- ret = 0;
- else
- {
- printf("1**0 mod 1 = ");
- BN_print_fp(stdout, &r);
- printf(", should be 0\n");
- }
-
- BN_free(&r);
- BN_free(&a);
- BN_free(&p);
- BN_free(&m);
-
- return ret;
-}
-
-int main(int argc, char *argv[])
- {
- BN_CTX *ctx;
- BIO *out=NULL;
- int i,ret;
- unsigned char c;
- BIGNUM *r_mont,*r_mont_const,*r_recp,*r_simple,*a,*b,*m;
-
- RAND_seed(rnd_seed, sizeof rnd_seed); /* or BN_rand may fail, and we don't
- * even check its return value
- * (which we should) */
-
- ERR_load_BN_strings();
-
- ctx=BN_CTX_new();
- if (ctx == NULL) EXIT(1);
- r_mont=BN_new();
- r_mont_const=BN_new();
- r_recp=BN_new();
- r_simple=BN_new();
- a=BN_new();
- b=BN_new();
- m=BN_new();
- if ( (r_mont == NULL) || (r_recp == NULL) ||
- (a == NULL) || (b == NULL))
- goto err;
-
- out=BIO_new(BIO_s_file());
-
- if (out == NULL) EXIT(1);
- BIO_set_fp(out,stdout,BIO_NOCLOSE);
-
- for (i=0; i<200; i++)
- {
- RAND_bytes(&c,1);
- c=(c%BN_BITS)-BN_BITS2;
- BN_rand(a,NUM_BITS+c,0,0);
-
- RAND_bytes(&c,1);
- c=(c%BN_BITS)-BN_BITS2;
- BN_rand(b,NUM_BITS+c,0,0);
-
- RAND_bytes(&c,1);
- c=(c%BN_BITS)-BN_BITS2;
- BN_rand(m,NUM_BITS+c,0,1);
-
- BN_mod(a,a,m,ctx);
- BN_mod(b,b,m,ctx);
-
- ret=BN_mod_exp_mont(r_mont,a,b,m,ctx,NULL);
- if (ret <= 0)
- {
- printf("BN_mod_exp_mont() problems\n");
- ERR_print_errors(out);
- EXIT(1);
- }
-
- ret=BN_mod_exp_recp(r_recp,a,b,m,ctx);
- if (ret <= 0)
- {
- printf("BN_mod_exp_recp() problems\n");
- ERR_print_errors(out);
- EXIT(1);
- }
-
- ret=BN_mod_exp_simple(r_simple,a,b,m,ctx);
- if (ret <= 0)
- {
- printf("BN_mod_exp_simple() problems\n");
- ERR_print_errors(out);
- EXIT(1);
- }
-
- ret=BN_mod_exp_mont_consttime(r_mont_const,a,b,m,ctx,NULL);
- if (ret <= 0)
- {
- printf("BN_mod_exp_mont_consttime() problems\n");
- ERR_print_errors(out);
- EXIT(1);
- }
-
- if (BN_cmp(r_simple, r_mont) == 0
- && BN_cmp(r_simple,r_recp) == 0
- && BN_cmp(r_simple,r_mont_const) == 0)
- {
- printf(".");
- fflush(stdout);
- }
- else
- {
- if (BN_cmp(r_simple,r_mont) != 0)
- printf("\nsimple and mont results differ\n");
- if (BN_cmp(r_simple,r_mont_const) != 0)
- printf("\nsimple and mont const time results differ\n");
- if (BN_cmp(r_simple,r_recp) != 0)
- printf("\nsimple and recp results differ\n");
-
- printf("a (%3d) = ",BN_num_bits(a)); BN_print(out,a);
- printf("\nb (%3d) = ",BN_num_bits(b)); BN_print(out,b);
- printf("\nm (%3d) = ",BN_num_bits(m)); BN_print(out,m);
- printf("\nsimple ="); BN_print(out,r_simple);
- printf("\nrecp ="); BN_print(out,r_recp);
- printf("\nmont ="); BN_print(out,r_mont);
- printf("\nmont_ct ="); BN_print(out,r_mont_const);
- printf("\n");
- EXIT(1);
- }
- }
- BN_free(r_mont);
- BN_free(r_mont_const);
- BN_free(r_recp);
- BN_free(r_simple);
- BN_free(a);
- BN_free(b);
- BN_free(m);
- BN_CTX_free(ctx);
- ERR_remove_thread_state(NULL);
- CRYPTO_mem_leaks(out);
- BIO_free(out);
- printf("\n");
-
- if (test_exp_mod_zero() != 0)
- goto err;
-
- printf("done\n");
-
- EXIT(0);
-err:
- ERR_load_crypto_strings();
- ERR_print_errors(out);
-#ifdef OPENSSL_SYS_NETWARE
- printf("ERROR\n");
-#endif
- EXIT(1);
- return(1);
- }
-
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