Update - OpenSSL 1.1.1-pre7-dev
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/*
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* Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright 2017 Ribose Inc. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (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://www.openssl.org/source/license.html
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*/
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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/bio.h>
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#include <openssl/evp.h>
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#include <openssl/bn.h>
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#include <openssl/crypto.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#include "testutil.h"
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#ifndef OPENSSL_NO_SM2
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# include <openssl/sm2.h>
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static RAND_METHOD fake_rand;
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static const RAND_METHOD *saved_rand;
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static uint8_t *fake_rand_bytes = NULL;
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static size_t fake_rand_bytes_offset = 0;
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static int get_faked_bytes(unsigned char *buf, int num)
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{
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int i;
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if (fake_rand_bytes == NULL)
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return saved_rand->bytes(buf, num);
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for (i = 0; i != num; ++i)
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buf[i] = fake_rand_bytes[fake_rand_bytes_offset + i];
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fake_rand_bytes_offset += num;
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return 1;
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}
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static int start_fake_rand(const char *hex_bytes)
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{
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/* save old rand method */
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if (!TEST_ptr(saved_rand = RAND_get_rand_method()))
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return 0;
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fake_rand = *saved_rand;
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/* use own random function */
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fake_rand.bytes = get_faked_bytes;
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fake_rand_bytes = OPENSSL_hexstr2buf(hex_bytes, NULL);
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fake_rand_bytes_offset = 0;
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/* set new RAND_METHOD */
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if (!TEST_true(RAND_set_rand_method(&fake_rand)))
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return 0;
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return 1;
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}
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static int restore_rand(void)
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{
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OPENSSL_free(fake_rand_bytes);
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fake_rand_bytes = NULL;
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fake_rand_bytes_offset = 0;
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if (!TEST_true(RAND_set_rand_method(saved_rand)))
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return 0;
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return 1;
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}
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static EC_GROUP *create_EC_group(const char *p_hex, const char *a_hex,
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const char *b_hex, const char *x_hex,
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const char *y_hex, const char *order_hex,
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const char *cof_hex)
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{
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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 *g_x = NULL;
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BIGNUM *g_y = NULL;
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BIGNUM *order = NULL;
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BIGNUM *cof = NULL;
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EC_POINT *generator = NULL;
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EC_GROUP *group = NULL;
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BN_hex2bn(&p, p_hex);
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BN_hex2bn(&a, a_hex);
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BN_hex2bn(&b, b_hex);
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group = EC_GROUP_new_curve_GFp(p, a, b, NULL);
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BN_free(p);
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BN_free(a);
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BN_free(b);
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if (group == NULL)
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return NULL;
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generator = EC_POINT_new(group);
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if (generator == NULL)
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return NULL;
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BN_hex2bn(&g_x, x_hex);
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BN_hex2bn(&g_y, y_hex);
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if (EC_POINT_set_affine_coordinates_GFp(group, generator, g_x, g_y, NULL) ==
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0)
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return NULL;
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BN_free(g_x);
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BN_free(g_y);
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BN_hex2bn(&order, order_hex);
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BN_hex2bn(&cof, cof_hex);
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if (EC_GROUP_set_generator(group, generator, order, cof) == 0)
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return NULL;
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EC_POINT_free(generator);
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BN_free(order);
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BN_free(cof);
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return group;
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}
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static int test_sm2(const EC_GROUP *group,
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const char *userid,
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const char *privkey_hex,
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const char *message,
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const char *k_hex, const char *r_hex, const char *s_hex)
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{
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const size_t msg_len = strlen(message);
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int ok = -1;
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BIGNUM *priv = NULL;
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EC_POINT *pt = NULL;
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EC_KEY *key = NULL;
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ECDSA_SIG *sig = NULL;
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const BIGNUM *sig_r = NULL;
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const BIGNUM *sig_s = NULL;
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BIGNUM *r = NULL;
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BIGNUM *s = NULL;
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BN_hex2bn(&priv, privkey_hex);
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key = EC_KEY_new();
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EC_KEY_set_group(key, group);
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EC_KEY_set_private_key(key, priv);
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pt = EC_POINT_new(group);
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EC_POINT_mul(group, pt, priv, NULL, NULL, NULL);
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EC_KEY_set_public_key(key, pt);
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start_fake_rand(k_hex);
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sig = SM2_do_sign(key, EVP_sm3(), userid, (const uint8_t *)message, msg_len);
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restore_rand();
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if (sig == NULL)
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return 0;
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ECDSA_SIG_get0(sig, &sig_r, &sig_s);
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BN_hex2bn(&r, r_hex);
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BN_hex2bn(&s, s_hex);
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if (BN_cmp(r, sig_r) != 0) {
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printf("Signature R mismatch: ");
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BN_print_fp(stdout, r);
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printf(" != ");
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BN_print_fp(stdout, sig_r);
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printf("\n");
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ok = 0;
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}
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if (BN_cmp(s, sig_s) != 0) {
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printf("Signature S mismatch: ");
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BN_print_fp(stdout, s);
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printf(" != ");
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BN_print_fp(stdout, sig_s);
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printf("\n");
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ok = 0;
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}
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ok = SM2_do_verify(key, EVP_sm3(), sig, userid, (const uint8_t *)message, msg_len);
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ECDSA_SIG_free(sig);
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EC_POINT_free(pt);
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EC_KEY_free(key);
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BN_free(priv);
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BN_free(r);
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BN_free(s);
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return ok;
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}
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static int sm2_sig_test(void)
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{
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int rc = 0;
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/* From draft-shen-sm2-ecdsa-02 */
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EC_GROUP *test_group =
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create_EC_group
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("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
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"787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
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"63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
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"421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
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"0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2",
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"8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
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"1");
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if (test_group == NULL)
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return 0;
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rc = test_sm2(test_group,
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"ALICE123@YAHOO.COM",
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"128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263",
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"message digest",
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"006CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F",
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"40F1EC59F793D9F49E09DCEF49130D4194F79FB1EED2CAA55BACDB49C4E755D1",
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"6FC6DAC32C5D5CF10C77DFB20F7C2EB667A457872FB09EC56327A67EC7DEEBE7");
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EC_GROUP_free(test_group);
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return rc;
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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_sig_test);
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#endif
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return 1;
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}
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