Java tutorial
//package com.java2s; //License from project: Open Source License import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Main { public static String md5(final String in) { MessageDigest digest; try { digest = MessageDigest.getInstance("MD5"); digest.reset(); digest.update(in.getBytes()); final byte[] a = digest.digest(); final int len = a.length; final StringBuilder sb = new StringBuilder(len << 1); for (int i = 0; i < len; i++) { sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16)); sb.append(Character.forDigit(a[i] & 0x0f, 16)); } return sb.toString(); } catch (final NoSuchAlgorithmException e) { e.printStackTrace(); } return null; } }