001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.runtime.functions.conversion;
020
021
022import javax.crypto.KeyGenerator;
023
024import lucee.runtime.PageContext;
025import lucee.runtime.coder.Coder;
026import lucee.runtime.exp.PageException;
027import lucee.runtime.ext.function.Function;
028import lucee.runtime.op.Caster;
029
030/**
031 * Generates a Secret Key
032 */
033public final class GenerateSecretKey implements Function {
034        
035        public static String call(PageContext pc, String algorithm) throws PageException {
036                return call(pc, algorithm,0);
037        }
038        
039        public static String call(PageContext pc, String algorithm, double keySize) throws PageException {
040                try     {
041            KeyGenerator keyGenerator = KeyGenerator.getInstance(algorithm.toUpperCase());
042            if(keySize>0) keyGenerator.init(Caster.toIntValue(keySize));
043            return Coder.encode(Coder.ENCODING_BASE64, keyGenerator.generateKey().getEncoded());
044        }
045        catch(Exception e) {
046            throw Caster.toPageException(e);
047        }
048        }
049        
050}