Java tutorial
//package com.java2s; //License from project: Apache License import java.io.UnsupportedEncodingException; public class Main { public static String MD5(String md5) { try { java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5"); byte[] array; try { array = md.digest(md5.getBytes("UTF-8")); } catch (UnsupportedEncodingException e) { e.printStackTrace(); array = md.digest(md5.getBytes()); } StringBuffer sb = new StringBuffer(); for (int i = 0; i < array.length; ++i) { sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1, 3)); } return sb.toString(); } catch (java.security.NoSuchAlgorithmException e) { } return null; } }