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/**
* -
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix 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
*
* <p>http://www.apache.org/licenses/LICENSE-2.0
*
* <p>* 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.
*
* <p>* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.dmaap.datarouter.provisioning.utils;
import java.nio.charset.StandardCharsets;
import java.security.GeneralSecurityException;
import java.util.Base64;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
/**
* The Processing of a Password. Password can be encrypted and decrypted.
* @author Vikram Singh
* @version $Id: PasswordProcessor.java,v 1.0 2016/12/14 10:16:52 EST
*/
public class PasswordProcessor {
private static final String SECRET_KEY_FACTORY_TYPE = "PBEWithMD5AndDES";
private static final String PASSWORD_ENCRYPTION_STRING =
(new DB()).getProperties().getProperty("org.onap.dmaap.datarouter.provserver.passwordencryption");
private static final char[] PASSWORD = PASSWORD_ENCRYPTION_STRING.toCharArray();
private static final byte[] SALT = {(byte) 0xde, (byte) 0x33, (byte) 0x10,
(byte) 0x12, (byte) 0xde, (byte) 0x33, (byte) 0x10, (byte) 0x12,};
private PasswordProcessor(){
}
/**
* Encrypt password.
* @param property the Password
* @return Encrypted password.
*/
public static String encrypt(String property) throws GeneralSecurityException {
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(SECRET_KEY_FACTORY_TYPE);
SecretKey key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
Cipher pbeCipher = Cipher.getInstance(SECRET_KEY_FACTORY_TYPE);
pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(SALT, 32));
return Base64.getEncoder().encodeToString(pbeCipher.doFinal(property.getBytes(StandardCharsets.UTF_8)));
}
/**
* Decrypt password.
* @param property the Password
* @return Decrypt password.
*/
public static String decrypt(String property) throws GeneralSecurityException {
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(SECRET_KEY_FACTORY_TYPE);
SecretKey key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
Cipher pbeCipher = Cipher.getInstance(SECRET_KEY_FACTORY_TYPE);
pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(SALT, 32));
return new String(pbeCipher.doFinal(Base64.getDecoder().decode(property)), StandardCharsets.UTF_8);
}
}
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