Java tutorial
/* * Copyright (C) 2017 CenturyLink, Inc. * * 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. */ package com.centurylink.mdw.util; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import javax.crypto.Mac; import javax.crypto.spec.SecretKeySpec; import org.apache.commons.codec.binary.Hex; public class HmacSha1Signature { //TODO Add more as required public static final String ALGORITHM = "HmacSHA1"; public static String getHMACHexdigestSignature(byte[] payloadBytes, String key) throws InvalidKeyException, NoSuchAlgorithmException { SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), ALGORITHM); Mac mac = Mac.getInstance(ALGORITHM); mac.init(keySpec); byte[] rawHmac = mac.doFinal(payloadBytes); return Hex.encodeHexString(rawHmac); } }