de.fhdo.helper.DES.java Source code

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Here is the source code for de.fhdo.helper.DES.java

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/* 
 * CTS2 based Terminology Server and Terminology Browser
 * Copyright (C) 2014 FH Dortmund: Peter Haas, Robert Muetzner
 *
 * 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 de.fhdo.helper;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import org.apache.commons.codec.binary.Base64;

/**
 *
 * @author Robert Mtzner
 */
public class DES {

    public static String encrypt(String Text) {
        try {
            DESKeySpec keySpec = new DESKeySpec("schluessel_stdrepository15".getBytes("UTF8"));
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            SecretKey key = keyFactory.generateSecret(keySpec);

            // ENCODE plainTextPassword String
            byte[] cleartext = Text.getBytes("UTF8");
            Cipher cipher = Cipher.getInstance("DES");
            // cipher is not thread safe
            cipher.init(Cipher.ENCRYPT_MODE, key);
            return Base64.encodeBase64URLSafeString(cipher.doFinal(cleartext));

        } catch (Exception e) {
            e.printStackTrace();
        }

        return "";
    }

    public static String decrypt(String Text) {
        try {
            DESKeySpec keySpec = new DESKeySpec("schluessel_stdrepository15".getBytes("UTF8"));
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            SecretKey key = keyFactory.generateSecret(keySpec);

            byte[] encrypedPwdBytes = Base64.decodeBase64(Text);
            Cipher cipher = Cipher.getInstance("DES");// cipher is not thread safe
            cipher.init(Cipher.DECRYPT_MODE, key);

            byte[] plainTextPwdBytes = (cipher.doFinal(encrypedPwdBytes));

            return new String(plainTextPwdBytes);

        } catch (Exception e) {
            e.printStackTrace();
        }

        return "";
    }
}