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/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program 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.
*
* 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
* 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.sufficientlysecure.keychain.securitytoken;
import java.io.IOException;
/**
* Abstraction for transmitting APDU commands
*/
public interface Transport {
/**
* Transmit and receive data
* @param data data to transmit
* @return received data
* @throws IOException
*/
byte[] transceive(byte[] data) throws IOException;
/**
* Disconnect and release connection
*/
void release();
/**
* Check if device is was connected to and still is connected
* @return connection status
*/
boolean isConnected();
/**
* Check if Transport supports persistent connections e.g connections which can
* handle multiple operations in one session
* @return true if transport supports persistent connections
*/
boolean isPersistentConnectionAllowed();
/**
* Connect to device
* @throws IOException
*/
void connect() throws IOException;
}
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