/*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (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 <stdlib.h>
#include <string.h>
-#include "../e_os.h"
+#include "internal/nelem.h"
#include <openssl/bio.h>
#include <openssl/bn.h>
/*
* test_mod_exp_zero tests that x**0 mod 1 == 0. It returns zero on success.
*/
-static int test_mod_exp_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, failed = 0;
+ int ret = 0, failed = 0;
+ BN_MONT_CTX *mont = NULL;
if (!TEST_ptr(m = BN_new())
|| !TEST_ptr(a = BN_new())
if (!TEST_true(a_is_zero_mod_one("BN_mod_exp_mont_consttime", r, a)))
failed = 1;
+ if (!TEST_ptr(mont = BN_MONT_CTX_new()))
+ goto err;
+
+ ERR_set_mark();
+ /* mont is not set but passed in */
+ if (!TEST_false(BN_mod_exp_mont_consttime(r, a, p, m, ctx, mont)))
+ goto err;
+ ERR_pop_to_mark();
+
+ if (!TEST_true(BN_MONT_CTX_set(mont, m, ctx)))
+ goto err;
+
+ if (!TEST_true(BN_mod_exp_mont_consttime(r, a, p, m, ctx, mont)))
+ 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.
BN_free(a);
BN_free(p);
BN_free(m);
+ BN_MONT_CTX_free(mont);
BN_CTX_free(ctx);
return ret;
|| !TEST_ptr(m = BN_new()))
goto err;
- RAND_bytes(&c, 1);
+ if (!TEST_int_gt(RAND_bytes(&c, 1), 0))
+ goto err;
c = (c % BN_BITS) - BN_BITS2;
- BN_rand(a, NUM_BITS + c, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+ if (!TEST_true(BN_rand(a, NUM_BITS + c, BN_RAND_TOP_ONE,
+ BN_RAND_BOTTOM_ANY)))
+ goto err;
- RAND_bytes(&c, 1);
+ if (!TEST_int_gt(RAND_bytes(&c, 1), 0))
+ goto err;
c = (c % BN_BITS) - BN_BITS2;
- BN_rand(b, NUM_BITS + c, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+ if (!TEST_true(BN_rand(b, NUM_BITS + c, BN_RAND_TOP_ONE,
+ BN_RAND_BOTTOM_ANY)))
+ goto err;
- RAND_bytes(&c, 1);
+ if (!TEST_int_gt(RAND_bytes(&c, 1), 0))
+ goto err;
c = (c % BN_BITS) - BN_BITS2;
- BN_rand(m, NUM_BITS + c, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD);
+ if (!TEST_true(BN_rand(m, NUM_BITS + c, BN_RAND_TOP_ONE,
+ BN_RAND_BOTTOM_ODD)))
+ goto err;
if (!TEST_true(BN_mod(a, a, m, ctx))
|| !TEST_true(BN_mod(b, b, m, ctx))
return ret;
}
-void register_tests(void)
+static int test_mod_exp_x2(int idx)
+{
+ BN_CTX *ctx;
+ int ret = 0;
+ BIGNUM *r_mont_const_x2_1 = NULL;
+ BIGNUM *r_mont_const_x2_2 = NULL;
+ BIGNUM *r_simple1 = NULL;
+ BIGNUM *r_simple2 = NULL;
+ BIGNUM *a1 = NULL;
+ BIGNUM *b1 = NULL;
+ BIGNUM *m1 = NULL;
+ BIGNUM *a2 = NULL;
+ BIGNUM *b2 = NULL;
+ BIGNUM *m2 = NULL;
+ int factor_size = 0;
+
+ if (idx <= 100)
+ factor_size = 1024;
+ else if (idx <= 200)
+ factor_size = 1536;
+ else if (idx <= 300)
+ factor_size = 2048;
+
+ if (!TEST_ptr(ctx = BN_CTX_new()))
+ goto err;
+
+ if (!TEST_ptr(r_mont_const_x2_1 = BN_new())
+ || !TEST_ptr(r_mont_const_x2_2 = BN_new())
+ || !TEST_ptr(r_simple1 = BN_new())
+ || !TEST_ptr(r_simple2 = BN_new())
+ || !TEST_ptr(a1 = BN_new())
+ || !TEST_ptr(b1 = BN_new())
+ || !TEST_ptr(m1 = BN_new())
+ || !TEST_ptr(a2 = BN_new())
+ || !TEST_ptr(b2 = BN_new())
+ || !TEST_ptr(m2 = BN_new()))
+ goto err;
+
+ BN_rand(a1, factor_size, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+ BN_rand(b1, factor_size, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+ BN_rand(m1, factor_size, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD);
+ BN_rand(a2, factor_size, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+ BN_rand(b2, factor_size, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY);
+ BN_rand(m2, factor_size, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD);
+
+ if (!TEST_true(BN_mod(a1, a1, m1, ctx))
+ || !TEST_true(BN_mod(b1, b1, m1, ctx))
+ || !TEST_true(BN_mod(a2, a2, m2, ctx))
+ || !TEST_true(BN_mod(b2, b2, m2, ctx))
+ || !TEST_true(BN_mod_exp_simple(r_simple1, a1, b1, m1, ctx))
+ || !TEST_true(BN_mod_exp_simple(r_simple2, a2, b2, m2, ctx))
+ || !TEST_true(BN_mod_exp_mont_consttime_x2(r_mont_const_x2_1, a1, b1, m1, NULL,
+ r_mont_const_x2_2, a2, b2, m2, NULL,
+ ctx)))
+ goto err;
+
+ if (!TEST_BN_eq(r_simple1, r_mont_const_x2_1)
+ || !TEST_BN_eq(r_simple2, r_mont_const_x2_2)) {
+ if (BN_cmp(r_simple1, r_mont_const_x2_1) != 0)
+ TEST_info("simple and mont const time x2 (#1) results differ");
+ if (BN_cmp(r_simple2, r_mont_const_x2_2) != 0)
+ TEST_info("simple and mont const time x2 (#2) results differ");
+
+ BN_print_var(a1);
+ BN_print_var(b1);
+ BN_print_var(m1);
+ BN_print_var(a2);
+ BN_print_var(b2);
+ BN_print_var(m2);
+ BN_print_var(r_simple1);
+ BN_print_var(r_simple2);
+ BN_print_var(r_mont_const_x2_1);
+ BN_print_var(r_mont_const_x2_2);
+ goto err;
+ }
+
+ ret = 1;
+ err:
+ BN_free(r_mont_const_x2_1);
+ BN_free(r_mont_const_x2_2);
+ BN_free(r_simple1);
+ BN_free(r_simple2);
+ BN_free(a1);
+ BN_free(b1);
+ BN_free(m1);
+ BN_free(a2);
+ BN_free(b2);
+ BN_free(m2);
+ BN_CTX_free(ctx);
+
+ return ret;
+}
+
+int setup_tests(void)
{
ADD_TEST(test_mod_exp_zero);
ADD_ALL_TESTS(test_mod_exp, 200);
+ ADD_ALL_TESTS(test_mod_exp_x2, 300);
+ return 1;
}
projects / openssl.git / blobdiff