1 files changed, 58 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/Transport.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/Transport.java
new file mode 100644
index 000000000..294eaa9ee
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/Transport.java
@@ -0,0 +1,58 @@
+/*
+ * 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;
+}