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/*
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* This program is a part of the IoTa Project.
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*
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* Copyright © 2008-2012 Université de Caen Basse-Normandie, GREYC
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* Copyright © 2008-2012 Orange Labs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* <http://www.gnu.org/licenses/>
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*
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* See AUTHORS for a list of contributors.
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*/
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package fr.unicaen.iota.discovery.server.util;
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import java.io.UnsupportedEncodingException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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public final class MD5 {
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private MD5() {
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}
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private static String convertToHex(byte[] data) {
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StringBuilder buf = new StringBuilder();
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for (int i = 0; i < data.length; i++) {
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int halfbyte = (data[i] >>> 4) & 0x0F;
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int two_halfs = 0;
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do {
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if ((0 <= halfbyte) && (halfbyte <= 9)) {
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buf.append((char) ('0' + halfbyte));
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} else {
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buf.append((char) ('a' + (halfbyte - 10)));
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}
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halfbyte = data[i] & 0x0F;
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} while (two_halfs++ < 1);
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}
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return buf.toString();
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}
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public static String MD5_Algo(String text)
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throws NoSuchAlgorithmException, UnsupportedEncodingException {
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MessageDigest md;
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md = MessageDigest.getInstance("MD5");
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md.update(text.getBytes("iso-8859-1"), 0, text.length());
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return convertToHex(md.digest());
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}
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}
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