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JDBC Driver for the Firebird RDBMS
/*
* Firebird Open Source JavaEE Connector - JDBC Driver
*
* Distributable under LGPL license.
* You may obtain a copy of the License at http://www.gnu.org/copyleft/lgpl.html
*
* This program 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
* LGPL License for more details.
*
* This file was created by members of the firebird development team.
* All individual contributions remain the Copyright (C) of those
* individuals. Contributors to this file are either listed here or
* can be obtained from a source control history command.
*
* All rights reserved.
*/
package org.firebirdsql.gds.ng.dbcrypt.simple;
import org.firebirdsql.gds.ng.dbcrypt.DbCryptCallback;
import org.firebirdsql.gds.ng.dbcrypt.DbCryptCallbackSpi;
import org.firebirdsql.util.ByteArrayHelper;
import java.nio.charset.StandardCharsets;
/**
* Provider for a static value response database encryption callback.
*
* This provider takes the {@code dbCryptConfig} value to determine the static value of the response:
*
*
* - value is {@code null}: empty response
* - value starts with {@code "base64:"}: rest of the value is decoded to bytes using base64
* - all other values are encoded to bytes using UTF-8
*
*
* @author Mark Rotteveel
* @since 3.0.4
*/
public final class StaticValueDbCryptCallbackSpi implements DbCryptCallbackSpi {
static final String NAME = "StaticValue";
private static final String BASE64_PREFIX = "base64:";
private static final int BASE64_PREFIX_LENGTH = 7;
@Override
public String getDbCryptCallbackName() {
return NAME;
}
@Override
public DbCryptCallback createDbCryptCallback(String dbCryptConfig) {
if (dbCryptConfig == null) {
return StaticValueDbCryptCallback.EMPTY_RESPONSE;
}
final byte[] staticValue;
if (dbCryptConfig.startsWith(BASE64_PREFIX)) {
staticValue = ByteArrayHelper.fromBase64String(dbCryptConfig.substring(BASE64_PREFIX_LENGTH));
} else {
staticValue = dbCryptConfig.getBytes(StandardCharsets.UTF_8);
}
return new StaticValueDbCryptCallback(staticValue);
}
}
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