Maxim Integrated / Mbed 2 deprecated DeepCover Embedded Security in IoT

MAXREFDES143#: DeepCover Embedded Security in IoT Authenticated Sensing & Notification

Dependencies:   MaximInterface mbed

The MAXREFDES143# is an Internet of Things (IoT) embedded security reference design, built to protect an industrial sensing node by means of authentication and notification to a web server. The hardware includes a peripheral module representing a protected sensor node monitoring operating temperature and remaining life of a filter (simulated through ambient light sensing) and an mbed shield representing a controller node responsible for monitoring one or more sensor nodes. The design is hierarchical with each controller node communicating data from connected sensor nodes to a web server that maintains a centralized log and dispatches notifications as necessary. The mbed shield contains a Wi-Fi module, a DS2465 coprocessor with 1-Wire® master function, an LCD, LEDs, and pushbuttons. The protected sensor node contains a DS28E15 authenticator, a DS7505 temperature sensor, and a MAX44009 light sensor. The mbed shield communicates to a web server by the onboard Wi-Fi module and to the protected sensor node with I2C and 1-Wire. The MAXREFDES143# is equipped with a standard shield connector for immediate testing using an mbed board such as the MAX32600MBED#. The simplicity of this design enables rapid integration into any star-topology IoT network requiring the heightened security with low overhead provided by the SHA-256 symmetric-key algorithm.

More information about the MAXREFDES143# is available on the Maxim Integrated website.

--- a/SensorNode.hpp	Wed Oct 19 13:23:41 2016 -0500
+++ b/SensorNode.hpp	Fri Dec 16 10:47:34 2016 -0600
@@ -90,7 +90,8 @@
   double initialLux() const { return m_initialLux; }
   
   // Grant access to hardware interfaces for provisioning.
-  friend class Factory;
+  friend bool provisionCoprocessor(OneWire::DS2465 & ds2465);
+  friend bool provisionSensorNode(SensorNode & sensorNode, bool validSecret);
   
 private:
   /// Authenticated data stored in DS28E15.
@@ -105,7 +106,7 @@
     
     void reset()
     {
-      std::memset(segment, 0, segment.length);
+      segment.fill(0);
       filterLife = initialFilterLife;
     }
   };