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/SensorData.hpp	Tue Apr 04 14:10:48 2017 -0500
+++ b/SensorData.hpp	Mon Nov 06 17:34:13 2017 -0600
@@ -28,8 +28,7 @@
 * trademarks, maskwork rights, or any other form of intellectual
 * property whatsoever. Maxim Integrated Products, Inc. retains all
 * ownership rights.
@@ -37,14 +36,13 @@
 #include <stdint.h>
 /// Contains a set of sensor measurements.
-struct SensorData
+struct SensorData {
   static const int8_t tempAlarmLevel = 26;
   static const uint8_t filterLifeAlarmLevel = 20;
   int8_t temp;
   uint8_t filterLife;
   bool tempAlarm() const { return (temp >= tempAlarmLevel); }
   bool filterLifeAlarm() const { return (filterLife <= filterLifeAlarmLevel); }