SymmetricKeyUtils.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
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 * 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 org.openspcoop2.utils.certificate;

import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import org.openspcoop2.utils.UtilsException;

/** 
 * SymmetricKeyUtils
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class SymmetricKeyUtils {

    public static final String ALGO_AES = "AES";
    public static final String ALGO_RIJNDAEL = "Rijndael";
    
    public static SymmetricKeyUtils getInstance() {
        return new SymmetricKeyUtils();
    }
    public static SymmetricKeyUtils getInstance(String algo) {
        return new SymmetricKeyUtils(algo);
    }
    
    private String algorithm;
    
    public SymmetricKeyUtils() {
        this(ALGO_AES);
    }
    public SymmetricKeyUtils(String algorithm) {
        this.algorithm = algorithm;
    }
    
    
    // ** SECRET KEY **/
    
    public SecretKey getSecretKey(byte[] secretKey) throws UtilsException {

        try {
            return new SecretKeySpec(secretKey, this.algorithm);
        }catch(Exception e) {
            throw new UtilsException(e.getMessage(),e);
        }
    }
}