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.

Diff: WebServerInterface.hpp

Revision:
25:37ea43ff81be
Parent:
24:434330962308
Child:
28:e5cdaf13d299
--- a/WebServerInterface.hpp	Wed Oct 19 13:23:41 2016 -0500
+++ b/WebServerInterface.hpp	Fri Dec 16 10:47:34 2016 -0600
@@ -35,6 +35,7 @@
 #define WEBSERVERINTERFACE_HPP
 
 #include <string>
+#include "RomId/RomId.h"
 
 /// The message type described by the POST.
 enum PostEvent
@@ -52,10 +53,7 @@
 /// through an HTTP challenge-respones scheme with SHA-256 data signing.
 class WebServerInterface
 {
-public:
-   /// Session ID used by the web server to distinguish between multiple Controllers.
-  std::string sessionId;
-  
+public:  
   /// @param esp8266 Interface to ESP8266 for Wi-Fi access.
   /// @param pc Optional serial interface for received web traffic.
   WebServerInterface(ESP8266 & esp8266, mbed::Serial * pc = NULL);
@@ -75,7 +73,14 @@
   /// Format sensor data as text suitable for use in a POST body.
   /// @param sensorData Sensor data to format.
   /// @returns Data formatted for web server.
-  static std::string formatSensorDataPostBody(const SensorData & sensorData); 
+  static std::string formatSensorDataPostBody(const SensorData & sensorData);
+  
+  /// @{
+  /// Session ID used by the web server to distinguish between multiple Controllers.
+  const OneWire::RomId & sessionId() const { return m_sessionId; }
+  const std::string & sessionIdString() const { return m_sessionIdString; }
+  void setSessionId(const OneWire::RomId & sessionId);
+  /// @}
  
 private:
   /// @{
@@ -88,6 +93,9 @@
   static const char serverChallengePath[];
   /// @}
   
+  OneWire::RomId m_sessionId;
+  std::string m_sessionIdString;
+  
   ESP8266 & esp8266;
   mbed::Serial * pc;
 };