MD5Util.java

package com.temenos.interaction.example.mashup.streaming;

/*
 * #%L
 * interaction-example-mashup-streaming
 * %%
 * Copyright (C) 2012 - 2014 Temenos Holdings N.V.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */


import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MD5Util {
    private static final Logger LOGGER = LoggerFactory.getLogger(MD5Util.class);
    
	public static String hex(byte[] array) {
		StringBuilder sb = new StringBuilder();
		for (int i = 0; i < array.length; ++i) {
			sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(
					1, 3));
		}
		return sb.toString();
	}

	public static String md5Hex(String message) {
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			return hex(md.digest(message.getBytes("CP1252")));
		} catch (NoSuchAlgorithmException e) {
		    LOGGER.error("Failed to find a the algorithm for MessageDigest.", e);
		} catch (UnsupportedEncodingException e) {
		    LOGGER.error("Unsupported encoding.", e);
		}
		return null;
	}
}