Implemented authentication.

Near feature complete.

U2F_Authenticate_APDU.hpp

@@ -0,0 +1,23 @@
+#pragma once
+#include "U2F_Msg_CMD.hpp"
+#include "Storage.hpp"
+
+struct U2F_Authenticate_APDU : U2F_Msg_CMD
+{
+	uint8_t controlByte;
+	std::array<uint8_t, 32> challengeP;
+	Storage::AppParam       appParam;
+	std::vector<uint8_t>    keyH;
+
+	public:
+		U2F_Authenticate_APDU(const U2F_Msg_CMD &msg, const std::vector<uint8_t> &data);
+
+		void respond();
+
+	enum ControlCode
+	{
+		CheckOnly = 0x07,
+		EnforcePresenceSign = 0x03,
+		DontEnforcePresenceSign = 0x08
+	};
+};