openmeetings-util/src/main/java/org/apache/openmeetings/util/crypt/SHA256.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") +  you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.openmeetings.util.crypt;

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import org.apache.commons.codec.binary.Hex;

public class SHA256 {
	public static String checksum(String data) throws NoSuchAlgorithmException {
		MessageDigest md = MessageDigest.getInstance("SHA-256");
		byte[] b = data == null ? new byte[0] : data.getBytes(StandardCharsets.UTF_8);
		md.update(b);
		return Hex.encodeHexString(md.digest());
	}
}