org.esupportail.papercut.services.HashService.java Source code

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Here is the source code for org.esupportail.papercut.services.HashService.java

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/**
 * Licensed to EsupPortail under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.
 *
 * EsupPortail 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.esupportail.papercut.services;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;

import org.apache.commons.codec.binary.Hex;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Service;

@Service
public class HashService {

    private final Logger log = Logger.getLogger(getClass());

    private final static String ALGO_HSAH = "SHA512";

    SecretKeySpec secretKey;

    public String getHash() {
        return ALGO_HSAH;
    }

    public void setHmacKey(String hmacKey) {
        secretKey = new SecretKeySpec(DatatypeConverter.parseHexBinary(hmacKey), "HmacSHA512");
    }

    public String getHMac(String input) {
        try {
            Mac mac = Mac.getInstance("HmacSHA512");
            mac.init(secretKey);
            final byte[] macData = mac.doFinal(input.getBytes());
            byte[] hex = new Hex().encode(macData);
            String hmac = new String(hex, "ISO-8859-1").toUpperCase();
            log.debug(input);
            log.debug(hmac);
            return hmac;
        } catch (Exception e) {
            log.error("Error during encoding data ...");
            throw new RuntimeException(e);
        }
    }

}