Java tutorial
/* * Copyright 2013 timovaananen. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package customerproject.customerutilities; import java.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import org.apache.commons.codec.binary.Base64; import org.apache.commons.codec.digest.DigestUtils; /** * * @author timovaananen */ public class Utilities { private static String convertToHex(byte[] data) { StringBuffer buf = new StringBuffer(); 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(String text) throws NoSuchAlgorithmException, UnsupportedEncodingException { MessageDigest md; md = MessageDigest.getInstance("MD5"); byte[] md5hash = new byte[32]; md.update(text.getBytes("iso-8859-1"), 0, text.length()); md5hash = md.digest(); return convertToHex(md5hash); } public static String SHA256(String email, String password) throws NoSuchAlgorithmException, UnsupportedEncodingException { String text = email + "." + password; MessageDigest md = DigestUtils.getSha256Digest(); byte[] sha256hash = new byte[32]; md.update(text.getBytes("iso-8859-1"), 0, text.length()); sha256hash = md.digest(); //return Base64.encodeBase64String(sha256hash); return Base64.encodeBase64URLSafeString(sha256hash); //String hex = convertToHex(sha256hash); } }