|
/*
|
|
* This program is a part of the IoTa Project.
|
|
*
|
|
* Copyright © 2008-2012 Université de Caen Basse-Normandie, GREYC
|
|
* Copyright © 2008-2012 Orange Labs
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU 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.
|
|
* <http://www.gnu.org/licenses/>
|
|
*
|
|
* See AUTHORS for a list of contributors.
|
|
*/
|
|
package fr.unicaen.iota.epcilon.util;
|
|
|
|
import java.io.UnsupportedEncodingException;
|
|
import java.security.MessageDigest;
|
|
import java.security.NoSuchAlgorithmException;
|
|
|
|
public final class MD5 {
|
|
|
|
private MD5() {
|
|
}
|
|
|
|
private static String convertToHex(byte[] data) {
|
|
StringBuilder buf = new StringBuilder();
|
|
for (int i = 0; i < data.length; i++) {
|
|
int halfbyte = (data[i] >>> 4) & 0x0F;
|
|
int two_halfs = 0;
|
|
do {
|
|
if ((0 <= halfbyte) && (halfbyte <= 9)) {
|
|
buf.append((char) ('0' + halfbyte));
|
|
} else {
|
|
buf.append((char) ('a' + (halfbyte - 10)));
|
|
}
|
|
halfbyte = data[i] & 0x0F;
|
|
} while (two_halfs++ < 1);
|
|
}
|
|
return buf.toString();
|
|
}
|
|
|
|
public static String MD5_Algo(String text)
|
|
throws NoSuchAlgorithmException, UnsupportedEncodingException {
|
|
MessageDigest md;
|
|
md = MessageDigest.getInstance("MD5");
|
|
md.update(text.getBytes("iso-8859-1"), 0, text.length());
|
|
return convertToHex(md.digest());
|
|
}
|
|
}
|