94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
/*
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* Copyright 2023 The Tongsuo Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://github.com/Tongsuo-Project/Tongsuo/blob/master/LICENSE.txt
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*/
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/*
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* Low level APIs are deprecated for public use, but still ok for internal use.
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*/
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#include "internal/deprecated.h"
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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 <openssl/bn.h>
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#include <openssl/err.h>
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#include "testutil.h"
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#ifndef OPENSSL_NO_SM2
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static const char *p_hex =
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"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF";
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static int sm2_mod_test(void){
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int testresult = 0;
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size_t i = 0;
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BIGNUM *p = NULL;
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BIGNUM *a = NULL;
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BIGNUM *b = NULL;
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BIGNUM *ab = NULL;
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BIGNUM *ab_fast = NULL;
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BN_CTX *ctx = NULL;
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if (!TEST_true(ctx = BN_CTX_new())) {
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goto done;
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}
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/* test BN_get0_sm2_prime_256*/
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if (!TEST_true(BN_hex2bn(&p, p_hex))
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|| !TEST_int_eq(BN_ucmp(p, BN_get0_sm2_prime_256()), 0)){
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goto done;
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}
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/* test BN_sm2_mod_256*/
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BN_CTX_start(ctx);
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a = BN_CTX_get(ctx);
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b = BN_CTX_get(ctx);
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ab_fast = BN_CTX_get(ctx);
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ab = BN_CTX_get(ctx);
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/*
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* Randomly generate two numbers in the prime field and multiply them，
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* then compare the results of fast modular reduction and conventional algorithms.
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*/
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for (i = 0; i < 100; i++){
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if (!TEST_true(BN_priv_rand_range_ex(a, p, 0, ctx))
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|| !TEST_true(BN_priv_rand_range_ex(b, p, 0, ctx))
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|| !TEST_true(BN_mul(ab_fast, a, b, ctx))
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|| !TEST_true(BN_sm2_mod_256(ab_fast, ab_fast, p, ctx))
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|| !TEST_true(BN_mod_mul(ab, a, b, p, ctx))) {
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goto done;
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}
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if (!TEST_int_eq(BN_ucmp(ab, ab_fast), 0)){
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goto done;
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}
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}
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testresult = 1;
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done:
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BN_CTX_free(ctx);
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BN_free(p);
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return testresult;
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}
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#endif
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int setup_tests(void)
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{
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#ifdef OPENSSL_NO_SM2
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TEST_note("SM2 is disabled.");
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#else
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ADD_TEST(sm2_mod_test);
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#endif
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return 1;
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}
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