-/* 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.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * 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.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/rand.h>
#include <openssl/err.h>
-#define NUM_BITS (BN_BITS*2)
+#define NUM_BITS (BN_BITS2 * 4)
static const char rnd_seed[] =
"string to make the random number generator think it has entropy";
+/*
+ * Test that r == 0 in test_exp_mod_zero(). Returns one on success,
+ * returns zero and prints debug output otherwise.
+ */
+static int a_is_zero_mod_one(const char *method, const BIGNUM *r,
+ const BIGNUM *a) {
+ if (!BN_is_zero(r)) {
+ fprintf(stderr, "%s failed:\n", method);
+ fprintf(stderr, "a ** 0 mod 1 = r (should be 0)\n");
+ fprintf(stderr, "a = ");
+ BN_print_fp(stderr, a);
+ fprintf(stderr, "\nr = ");
+ BN_print_fp(stderr, r);
+ fprintf(stderr, "\n");
+ return 0;
+ }
+ return 1;
+}
+
/*
* test_exp_mod_zero tests that x**0 mod 1 == 0. It returns zero on success.
*/
{
BIGNUM *a = NULL, *p = NULL, *m = NULL;
BIGNUM *r = NULL;
+ BN_ULONG one_word = 1;
BN_CTX *ctx = BN_CTX_new();
- int ret = 1;
+ int ret = 1, failed = 0;
m = BN_new();
if (!m)
r = BN_new();
if (!r)
goto err;
- 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");
+ if (!BN_rand(a, 1024, 0, 0))
+ goto err;
+
+ if (!BN_mod_exp(r, a, p, m, ctx))
+ goto err;
+
+ if (!a_is_zero_mod_one("BN_mod_exp", r, a))
+ failed = 1;
+
+ if (!BN_mod_exp_recp(r, a, p, m, ctx))
+ goto err;
+
+ if (!a_is_zero_mod_one("BN_mod_exp_recp", r, a))
+ failed = 1;
+
+ if (!BN_mod_exp_simple(r, a, p, m, ctx))
+ goto err;
+
+ if (!a_is_zero_mod_one("BN_mod_exp_simple", r, a))
+ failed = 1;
+
+ if (!BN_mod_exp_mont(r, a, p, m, ctx, NULL))
+ goto err;
+
+ if (!a_is_zero_mod_one("BN_mod_exp_mont", r, a))
+ failed = 1;
+
+ if (!BN_mod_exp_mont_consttime(r, a, p, m, ctx, NULL)) {
+ goto err;
}
+ if (!a_is_zero_mod_one("BN_mod_exp_mont_consttime", r, a))
+ failed = 1;
+
+ /*
+ * A different codepath exists for single word multiplication
+ * in non-constant-time only.
+ */
+ if (!BN_mod_exp_mont_word(r, one_word, p, m, ctx, NULL))
+ goto err;
+
+ if (!BN_is_zero(r)) {
+ fprintf(stderr, "BN_mod_exp_mont_word failed:\n");
+ fprintf(stderr, "1 ** 0 mod 1 = r (should be 0)\n");
+ fprintf(stderr, "r = ");
+ BN_print_fp(stderr, r);
+ fprintf(stderr, "\n");
+ return 0;
+ }
+
+ ret = failed;
+
err:
BN_free(r);
BN_free(a);
BN_free(p);
BN_free(m);
+ BN_CTX_free(ctx);
return ret;
}
* don't even check its return
* value (which we should) */
- ERR_load_BN_strings();
-
ctx = BN_CTX_new();
if (ctx == NULL)
EXIT(1);
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;
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+ if (CRYPTO_mem_leaks(out) <= 0)
+ goto err;
+#endif
+ BIO_free(out);
+ printf("\n");
+
printf("done\n");
EXIT(0);
err:
- ERR_load_crypto_strings();
ERR_print_errors(out);
-#ifdef OPENSSL_SYS_NETWARE
- printf("ERROR\n");
-#endif
EXIT(1);
}
projects / openssl.git / blobdiff