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/common.hpp	Wed Apr 20 20:13:33 2016 +0000
+++ b/common.hpp	Thu May 12 14:40:14 2016 -0500
@@ -35,28 +35,29 @@
 #define _COMMON_HPP
 
 #include <string>
-#include <cstdint>
+#include <stdint.h>
+#include <stddef.h>
 
 /// Contains a set of sensor measurements.
 struct SensorData
 {
   static const std::int8_t tempAlarmLevel = 26;
-  static const std::uint8_t filterLifeAlarmLevel = 20;
+  static const uint8_t filterLifeAlarmLevel = 20;
   
   std::int8_t temp;
-  std::uint8_t filterLife;
+  uint8_t filterLife;
   
   bool tempAlarm() const { return (temp >= tempAlarmLevel); }
   bool filterLifeAlarm() const { return (filterLife <= filterLifeAlarmLevel); }
 };
 
 /// Characters per byte for hex data.
-extern const std::size_t charsPerByte;
+extern const size_t charsPerByte;
 
 /// Creates a new hex string from a byte array.
-std::string byteArrayToHexString(const std::uint8_t * byteArray, std::size_t byteArraySize);
+std::string byteArrayToHexString(const uint8_t * byteArray, size_t byteArraySize);
 
 /// Appends a hex string created from a byte array to an existing string.
-void byteArrayToHexString(const std::uint8_t * byteArray, std::size_t byteArraySize, std::string & hexString);
+void byteArrayToHexString(const uint8_t * byteArray, size_t byteArraySize, std::string & hexString);
 
 #endif
\ No newline at end of file