Added registration.

Currently doesn't return any valid result, hence host believes device
failed to register, however, insecure storage of keys does occur.

Makefile

@@ -0,0 +1,28 @@
+#!/usr/bin/env make
+
+SRC_DIR  := .
+OBJ_DIR  := obj
+LDFLAGS  := -lmbedcrypto -lb64
+CPPFLAGS :=
+CXXFLAGS := --std=c++14
+
+CXXFLAGS += -MMD -MP
+MODULES  := $(wildcard $(SRC_DIR)/*.cpp)
+OBJECTS  := $(MODULES:$(SRC_DIR)/%.cpp=$(OBJ_DIR)/%.o)
+
+monitor: $(OBJECTS) libuECC.o
+	g++ $(LDFLAGS) -o $@ $^
+
+$(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
+	g++ $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
+
+-include $(OBJECTS:.o=.d)
+
+clean:
+	rm $(OBJ_DIR)/*
+	rm monitor
+
+.PHONY: libuECC
+libuECC.o:
+	$(MAKE) -C micro-ecc
+	cp micro-ecc/libuECC.o libuECC.o