diff --git a/libraries/MySensors/MySigningDriver.cpp b/libraries/MySensors/MySigningDriver.cpp
new file mode 100644
index 0000000..b109a3f
--- /dev/null
+++ b/libraries/MySensors/MySigningDriver.cpp
@@ -0,0 +1,4 @@
+#include "MySigningDriver.h"
+
+MySigningDriver::MySigningDriver() {
+}
diff --git a/libraries/MySensors/MySigningDriver.h b/libraries/MySensors/MySigningDriver.h
new file mode 100644
index 0000000..28a75ea
--- /dev/null
+++ b/libraries/MySensors/MySigningDriver.h
@@ -0,0 +1,60 @@
+/*
+ The MySigning driver provides a generic API for various signing backends to offer
+ signing of MySensors messages.
+ 
+ Created by Patrick "Anticimex" Fallberg <patrick@fallberg.net>
+*/
+#ifndef MySigningDriver_h
+#define MySigningDriver_h
+
+#include <stdint.h>
+#include "MyMessage.h"
+
+class MySigningDriver
+{ 
+public:
+	// MySigningDriver constructor.
+	// Different parameters would be needed depending on signing backend (e.g. pins connected etc.).
+	// Keeping these parameters as #define's in MyConfig to streamline the driver interface.
+	MySigningDriver();
+
+	// Stores signing identifier and a new nonce in provided message for signing operations.
+	// All space in message payload buffer is used for signing identifier and nonce.
+	// Returns false if subsystem is busy processing an ongoing signing operation.
+	// If successful, this marks the start of a signing operation at the receiving side so
+	// implementation is expected to do any necessary initializations within this call.
+	virtual bool getNonce(MyMessage &msg) = 0;
+
+	// Check timeout of verification session.
+	// Nonce will be purged if it takes too long for a signed message to be sent to the receiver.
+	// This function should be called on regular intervals.
+	virtual bool checkTimer(void) = 0;
+
+	// Get nonce from provided message and store for signing operations.
+	// Returns false if subsystem is busy processing an ongoing signing operation.
+	// Returns false if signing identifier found in message is not supported by the used backend.
+	// If successful, this marks the start of a signing operation at the sending side so
+	// implementation is expected to do any necessary initializations within this call.
+	virtual bool putNonce(MyMessage &msg) = 0;
+
+	// Signs provided message. All remaining space in message payload buffer is used for signing
+	// identifier and signature.
+	// Nonce used for signature calculation is the one generated previously using getNonce().
+	// Nonce will be cleared when this function is called to prevent re-use of nonce.
+	// Returns false if subsystem is busy processing an ongoing signing operation.
+	// Returns false if not two bytes or more of free payload space is left in provided message.
+	// This ends a signing operation at the sending side so implementation is expected to do any
+	// deinitializations and enter a power saving state within this call.
+	virtual bool signMsg(MyMessage &msg) = 0;
+
+	// Verifies signature in provided message.
+	// Nonce used for verification is the one previously set using putNonce().
+	// Nonce will be cleared when this function is called to prevent re-use of nonce.
+	// Returns false if subsystem is busy processing an ongoing signing operation.
+	// Returns false if signing identifier found in message is not supported by the used backend.
+	// This ends a signing operation at the receiving side so implementation is expected to do any
+	// deinitializations and enter a power saving state within this call.
+	virtual bool verifyMsg(MyMessage &msg) = 0;
+};
+
+#endif