/*
* This file is part of rockframework.
*
* rockframework 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.
*
* rockframework 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 this program. If not, see <http://www.gnu.org/licenses/>;.
*/
package br.net.woodstock.rockframework.security.crypt.impl;
import java.io.Serializable;
import java.security.GeneralSecurityException;
import java.security.Key;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import br.net.woodstock.rockframework.core.RockFrameworkVersion;
import br.net.woodstock.rockframework.core.utils.Conditions;
import br.net.woodstock.rockframework.security.crypt.CrypterException;
public class CrypterOperation implements Serializable {
private static final long serialVersionUID = RockFrameworkVersion.VERSION;
private Key key;
private Mode mode;
private byte[] data;
private String seed;
public CrypterOperation(final Key key, final Mode mode, final byte[] data) {
this(key, mode, data, null);
}
public CrypterOperation(final Key key, final Mode mode, final byte[] data, final String seed) {
super();
this.key = key;
this.mode = mode;
this.data = data;
this.seed = seed;
}
public byte[] execute() {
try {
Cipher cipher = Cipher.getInstance(this.key.getAlgorithm());
if (Conditions.isNotEmpty(this.seed)) {
SecureRandom random = new SecureRandom(this.seed.getBytes());
cipher.init(this.mode.getMode(), this.key, random);
} else {
cipher.init(this.mode.getMode(), this.key);
}
byte[] result = cipher.doFinal(this.data);
return result;
} catch (GeneralSecurityException e) {
throw new CrypterException(e);
}
}
public static enum Mode {
ENCRYPT(Cipher.ENCRYPT_MODE), DECRYPT(Cipher.DECRYPT_MODE);
private int mode;
private Mode(final int mode) {
this.mode = mode;
}
public int getMode() {
return this.mode;
}
}
}