/**
* This file is part of Graylog2.
*
* Graylog2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog2 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog2. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog2.security;
import org.apache.shiro.codec.Hex;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class AESTools {
private static final Logger LOG = LoggerFactory.getLogger(AESTools.class);
public static String encrypt(String plainText, String encryptionKey, String salt) {
try {
Cipher cipher = Cipher.getInstance("AES/CBC/ISO10126Padding", "SunJCE");
SecretKeySpec key = new SecretKeySpec(encryptionKey.getBytes("UTF-8"), "AES");
cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(salt.getBytes("UTF-8")));
return Hex.encodeToString(cipher.doFinal(plainText.getBytes("UTF-8")));
} catch (Exception e) {
LOG.error("Could not encrypt value.", e);
}
return null;
}
public static String decrypt(String cipherText, String encryptionKey, String salt) {
try {
Cipher cipher = Cipher.getInstance("AES/CBC/ISO10126Padding", "SunJCE");
SecretKeySpec key = new SecretKeySpec(encryptionKey.getBytes("UTF-8"), "AES");
cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(salt.getBytes("UTF-8")));
return new String(cipher.doFinal(Hex.decode(cipherText)), "UTF-8");
} catch (Exception e) {
LOG.error("Could not decrypt value.", e);
}
return null;
}
}