/*
* Copyright 2013 The Apache Software Foundation.
*
* 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 org.apache.juddi.v3.client.cryptor;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.KeySpec;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import org.apache.commons.codec.binary.Base64;
/**
* Triple DES, 168 bit key
* @author <a href="mailto:alexoree@apache.org">Alex O'Ree</a>
*/
public class TripleDESCrytor implements Cryptor {
private static final String UNICODE_FORMAT = "UTF8";
private static final String DESEDE_ENCRYPTION_SCHEME = "DESede";
private KeySpec ks;
private SecretKeyFactory skf;
private Cipher cipher;
byte[] arrayBytes;
private String myEncryptionKey;
private String myEncryptionScheme;
SecretKey key;
/**
*default constructor
* @throws Exception
*/
public TripleDESCrytor() throws Exception {
myEncryptionKey = "rioTEBCe/RAHRs6tTyYxDqettnVbZA6z";
myEncryptionScheme = DESEDE_ENCRYPTION_SCHEME;
arrayBytes = myEncryptionKey.getBytes(UNICODE_FORMAT);
ks = new DESedeKeySpec(arrayBytes);
skf = SecretKeyFactory.getInstance(myEncryptionScheme);
cipher = Cipher.getInstance(myEncryptionScheme);
key = skf.generateSecret(ks);
}
@Override
public String encrypt(String clear) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidAlgorithmParameterException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
String encryptedString = null;
try {
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] plainText = clear.getBytes(UNICODE_FORMAT);
byte[] encryptedText = cipher.doFinal(plainText);
encryptedString = new String(Base64.encodeBase64(encryptedText));
} catch (Exception e) {
e.printStackTrace();
}
return encryptedString;
}
/**
* generates a new key
* @return a new key
*/
public static String GEN() {
KeyGenerator kgen;
try {
kgen = KeyGenerator.getInstance(DESEDE_ENCRYPTION_SCHEME);
kgen.init(168);
SecretKey skey = kgen.generateKey();
byte[] raw = skey.getEncoded();
return new String(Base64.encodeBase64(raw));
} catch (Exception ex) {
ex.printStackTrace();;
}
return null;
}
@Override
public String decrypt(String str) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidAlgorithmParameterException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
String encryptedString = str;
try {
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] encryptedText = Base64.decodeBase64(str.getBytes());
byte[] plainTest = cipher.doFinal(encryptedText);
encryptedString = new String(plainTest);
} catch (Exception e) {
e.printStackTrace();
}
return encryptedString;
}
}