package org.uli.md5; import java.io.UnsupportedEncodingException; import java.math.BigInteger; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class MD5 { public String md5hex(String input) throws NoSuchAlgorithmException, UnsupportedEncodingException { byte[] bytesOfMessage = input.getBytes(); MessageDigest md = MessageDigest.getInstance("MD5"); byte[] thedigest = md.digest(bytesOfMessage); BigInteger bigInt = new BigInteger(1, thedigest); String hashtext = bigInt.toString(16); // Now we need to zero pad it if you actually want the full 32 chars. while (hashtext.length() < 32) { hashtext = "0" + hashtext; } return hashtext; } static public void main(String[] args) throws Exception { MD5 md5 = new MD5(); for (String arg : args) { System.out.println(md5.md5hex(arg)); } } }