-/* 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 1995-2017 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 <stdlib.h>
#include <string.h>
-#include "../e_os.h"
+#include "internal/nelem.h"
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/rand.h>
#include <openssl/err.h>
-#define NUM_BITS (BN_BITS*2)
+#include "testutil.h"
+
+#define NUM_BITS (BN_BITS2 * 4)
-static const char rnd_seed[] =
- "string to make the random number generator think it has entropy";
+#define BN_print_var(v) test_output_bignum(#v, v)
+
+/*
+ * 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)) {
+ TEST_error("%s failed: a ** 0 mod 1 = r (should be 0)", method);
+ BN_print_var(a);
+ BN_print_var(r);
+ return 0;
+ }
+ return 1;
+}
/*
- * test_exp_mod_zero tests that x**0 mod 1 == 0. It returns zero on success.
+ * test_mod_exp_zero tests that x**0 mod 1 == 0. It returns zero on success.
*/
-static int test_exp_mod_zero()
+static int test_mod_exp_zero(void)
{
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)
+ if (!TEST_ptr(m = BN_new())
+ || !TEST_ptr(a = BN_new())
+ || !TEST_ptr(p = BN_new())
+ || !TEST_ptr(r = BN_new()))
goto err;
+
BN_one(m);
+ BN_one(a);
+ BN_zero(p);
- a = BN_new();
- if (!a)
+ if (!TEST_true(BN_rand(a, 1024, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY)))
goto err;
- BN_one(a);
- p = BN_new();
- if (!p)
+ if (!TEST_true(BN_mod_exp(r, a, p, m, ctx)))
goto err;
- BN_zero(p);
- r = BN_new();
- if (!r)
+ if (!TEST_true(a_is_zero_mod_one("BN_mod_exp", r, a)))
+ failed = 1;
+
+ if (!TEST_true(BN_mod_exp_recp(r, a, p, m, ctx)))
+ goto err;
+
+ if (!TEST_true(a_is_zero_mod_one("BN_mod_exp_recp", r, a)))
+ failed = 1;
+
+ if (!TEST_true(BN_mod_exp_simple(r, a, p, m, ctx)))
+ goto err;
+
+ if (!TEST_true(a_is_zero_mod_one("BN_mod_exp_simple", r, a)))
+ failed = 1;
+
+ if (!TEST_true(BN_mod_exp_mont(r, a, p, m, ctx, NULL)))
+ goto err;
+
+ if (!TEST_true(a_is_zero_mod_one("BN_mod_exp_mont", r, a)))
+ failed = 1;
+
+ if (!TEST_true(BN_mod_exp_mont_consttime(r, a, p, m, ctx, NULL)))
+ goto err;
+
+ if (!TEST_true(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 (!TEST_true(BN_mod_exp_mont_word(r, one_word, p, m, ctx, NULL)))
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 (!TEST_BN_eq_zero(r)) {
+ TEST_error("BN_mod_exp_mont_word failed: "
+ "1 ** 0 mod 1 = r (should be 0)");
+ BN_print_var(r);
+ goto err;
}
+ ret = !failed;
err:
BN_free(r);
BN_free(a);
BN_free(p);
BN_free(m);
+ BN_CTX_free(ctx);
return ret;
}
-int main(int argc, char *argv[])
+static int test_mod_exp(int round)
{
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))
+ int ret = 0;
+ BIGNUM *r_mont = NULL;
+ BIGNUM *r_mont_const = NULL;
+ BIGNUM *r_recp = NULL;
+ BIGNUM *r_simple = NULL;
+ BIGNUM *a = NULL;
+ BIGNUM *b = NULL;
+ BIGNUM *m = NULL;
+
+ if (!TEST_ptr(ctx = BN_CTX_new()))
+ goto err;
+
+ if (!TEST_ptr(r_mont = BN_new())
+ || !TEST_ptr(r_mont_const = BN_new())
+ || !TEST_ptr(r_recp = BN_new())
+ || !TEST_ptr(r_simple = BN_new())
+ || !TEST_ptr(a = BN_new())
+ || !TEST_ptr(b = BN_new())
+ || !TEST_ptr(m = BN_new()))
goto err;
- out = BIO_new(BIO_s_file());
-
- if (out == NULL)
- EXIT(1);
- BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
-
- 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);
- }
+ RAND_bytes(&c, 1);
+ c = (c % BN_BITS) - BN_BITS2;
+ BN_rand(a, NUM_BITS + c, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+
+ RAND_bytes(&c, 1);
+ c = (c % BN_BITS) - BN_BITS2;
+ BN_rand(b, NUM_BITS + c, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+
+ RAND_bytes(&c, 1);
+ c = (c % BN_BITS) - BN_BITS2;
+ BN_rand(m, NUM_BITS + c, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD);
+
+ if (!TEST_true(BN_mod(a, a, m, ctx))
+ || !TEST_true(BN_mod(b, b, m, ctx))
+ || !TEST_true(BN_mod_exp_mont(r_mont, a, b, m, ctx, NULL))
+ || !TEST_true(BN_mod_exp_recp(r_recp, a, b, m, ctx))
+ || !TEST_true(BN_mod_exp_simple(r_simple, a, b, m, ctx))
+ || !TEST_true(BN_mod_exp_mont_consttime(r_mont_const, a, b, m, ctx, NULL)))
+ goto err;
+
+ if (!TEST_BN_eq(r_simple, r_mont)
+ || !TEST_BN_eq(r_simple, r_recp)
+ || !TEST_BN_eq(r_simple, r_mont_const)) {
+ if (BN_cmp(r_simple, r_mont) != 0)
+ TEST_info("simple and mont results differ");
+ if (BN_cmp(r_simple, r_mont_const) != 0)
+ TEST_info("simple and mont const time results differ");
+ if (BN_cmp(r_simple, r_recp) != 0)
+ TEST_info("simple and recp results differ");
+
+ BN_print_var(a);
+ BN_print_var(b);
+ BN_print_var(m);
+ BN_print_var(r_simple);
+ BN_print_var(r_recp);
+ BN_print_var(r_mont);
+ BN_print_var(r_mont_const);
+ goto err;
}
+
+ ret = 1;
+ err:
BN_free(r_mont);
BN_free(r_mont_const);
BN_free(r_recp);
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");
+ return ret;
+}
- EXIT(0);
- err:
- ERR_load_crypto_strings();
- ERR_print_errors(out);
-#ifdef OPENSSL_SYS_NETWARE
- printf("ERROR\n");
-#endif
- EXIT(1);
+int setup_tests(void)
+{
+ ADD_TEST(test_mod_exp_zero);
+ ADD_ALL_TESTS(test_mod_exp, 200);
+ return 1;
}
projects / openssl.git / blobdiff