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/*-
* ============LICENSE_START=======================================================
* openECOMP : SDN-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.ccsdk.sli.core.sli;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import javax.xml.bind.DatatypeConverter;
public class CheckSumHelper {
public static String md5SumFromFile(String pathToFile) throws NoSuchAlgorithmException, IOException {
byte[] b = Files.readAllBytes(Paths.get(pathToFile));
return md5SumFromByteArray(b);
}
private static String md5SumFromByteArray(byte[] input) throws NoSuchAlgorithmException {
byte[] hash = MessageDigest.getInstance("MD5").digest(input);
String hexString = DatatypeConverter.printHexBinary(hash);
return hexString.toLowerCase();
}
}
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