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/*
* ============LICENSE_START==========================================
* ONAP Portal SDK
* ===================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ===================================================================
*
* Unless otherwise specified, all software contained herein is licensed
* under the Apache License, Version 2.0 (the "License");
* you may not use this software 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.
*
* Unless otherwise specified, all documentation contained herein is licensed
* under the Creative Commons License, Attribution 4.0 Intl. (the "License");
* you may not use this documentation except in compliance with the License.
* You may obtain a copy of the License at
*
* https://creativecommons.org/licenses/by/4.0/
*
* Unless required by applicable law or agreed to in writing, documentation
* 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.
*
* ============LICENSE_END============================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*/
package org.onap.portalsdk.core.util;
import java.io.UnsupportedEncodingException;
import java.security.AlgorithmParameters;
import java.security.GeneralSecurityException;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
public class EncDecUtilTest {
private static final String WORD = "test";
private static final String SALT = "r n�HN~��|f��X �";
private static final int ITERATIONS = 65536;
private static final int KEY_SIZE = 256;
private byte[] ivBytes;
public String encrypt(String plainText) throws UnsupportedEncodingException, GeneralSecurityException {
// get salt
// salt = generateSalt();
byte[] saltBytes = SALT.getBytes("UTF-8");
// Derive the key
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
PBEKeySpec spec = new PBEKeySpec(WORD.toCharArray(), saltBytes, ITERATIONS, KEY_SIZE);
SecretKey secretKey = factory.generateSecret(spec);
SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");
// encrypt the message
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, secret);
AlgorithmParameters params = cipher.getParameters();
ivBytes = params.getParameterSpec(IvParameterSpec.class).getIV();
byte[] encryptedTextBytes = cipher.doFinal(plainText.getBytes("UTF-8"));
return Base64.encodeBase64String(encryptedTextBytes);
}
public String decrypt(String encryptedText) throws UnsupportedEncodingException, GeneralSecurityException {
byte[] saltBytes = SALT.getBytes("UTF-8");
byte[] encryptedTextBytes = Base64.decodeBase64(encryptedText);
// Derive the key
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
PBEKeySpec spec = new PBEKeySpec(WORD.toCharArray(), saltBytes, ITERATIONS, KEY_SIZE);
SecretKey secretKey = factory.generateSecret(spec);
SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");
// Decrypt the message
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(ivBytes));
byte[] decryptedTextBytes = cipher.doFinal(encryptedTextBytes);
return new String(decryptedTextBytes);
}
public String generateSalt() {
SecureRandom random = new SecureRandom();
byte [] bytes = new byte[20];
random.nextBytes(bytes);
return new String(bytes);
}
}
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