/*

* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.

*

* Licensed under the Apache License, Version 2.0 (the License); you may

* not use this file except in compliance with the License.

*

* http://www.apache.org/licenses/LICENSE-2.0

*/

import org.gmssl.Sm3Hmac;

import org.gmssl.Random;

public class Sm3HmacExample {

public static void main(String[] args) {

Random rng = new Random();

byte[] key = rng.randBytes(Sm3Hmac.MAC_SIZE);

Sm3Hmac sm3hmac = new Sm3Hmac(key);

sm3hmac.update("abc".getBytes(), 0, 3);

byte[] mac = sm3hmac.generateMac();

int i;

System.out.printf("sm3hmac('abc'): ");

for (i = 0; i < mac.length; i++) {

System.out.printf("%02x", mac[i]);

}

System.out.print("\n");

}

}