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: SensorNode.cpp

Revision:
8:594529956266
Parent:
7:e24f0b29f1f7
Child:
9:bc3d211d75ce
--- a/SensorNode.cpp	Fri May 13 14:54:04 2016 -0500
+++ b/SensorNode.cpp	Sat May 14 14:28:31 2016 -0500
@@ -33,6 +33,7 @@
 
 #include "SensorNode.hpp"
 #include "common.hpp"
+#include "RomCommands.h"
 #include "Masters/DS2465/DS2465.h"
 #include "I2C.h"
 
@@ -44,11 +45,8 @@
 #include <cstdlib>
 #endif
 
-using OneWire::Masters::OneWireMaster;
-using OneWire::Masters::DS2465;
-using OneWire::OneWireSlave;
-using OneWire::Authenticators::DS28E15_22_25;
-using OneWire::Authenticators::ISha256MacCoproc;
+using namespace OneWire;
+using namespace OneWire::RomCommands;
 
 bool SensorNode::rngInitialized = false;
 
@@ -101,7 +99,7 @@
   bool result;
   
   // Select device through Skip ROM
-  result = (ds2465.OWSkipRom() == OneWireMaster::Success);
+  result = (OWSkipRom(ds2465) == OneWireMaster::Success);
   if (result)
     result = (ds28e15_22_25.readBlockProtection(0, protectionStatus) == OneWireSlave::Success);
   if (result)
@@ -109,7 +107,7 @@
     if (!protectionStatus.noProtection())
     {
       // Select device through Skip ROM
-      result = (ds2465.OWSkipRom() == OneWireMaster::Success);
+      result = (OWSkipRom(ds2465) == OneWireMaster::Success);
       if (result)
         result = (ds28e15_22_25.readSegment(authData.pageNum, authData.segmentNum, authData.segment) == OneWireSlave::Success);
       if (result)
@@ -129,7 +127,7 @@
   DS28E15_22_25::Page pageData;
   
   // Select device through Skip ROM
-  if (ds2465.OWSkipRom() != OneWireMaster::Success)
+  if (OWSkipRom(ds2465) != OneWireMaster::Success)
     return false;
   // Read page data
   if (ds28e15_22_25.readPage(authData.pageNum, pageData, false) != OneWireSlave::Success)
@@ -152,13 +150,13 @@
   }
 
   // Select device through Skip ROM
-  if (ds2465.OWSkipRom() != OneWireMaster::Success)
+  if (OWSkipRom(ds2465) != OneWireMaster::Success)
     return false;
   // Write challenge to scratchpad
   if (ds28e15_22_25.writeScratchpad(challenge) != OneWireSlave::Success)
     return false;
   // Select device through Skip ROM
-  if (ds2465.OWSkipRom() != OneWireMaster::Success)
+  if (OWSkipRom(ds2465) != OneWireMaster::Success)
     return false;
   // Have device compute MAC
   DS28E15_22_25::Mac nodeMac;
@@ -210,7 +208,7 @@
     AuthData oldAuthData(authData);
     authData.filterLife = sensorData.filterLife;
     // Select device through Skip ROM
-    result = (ds2465.OWSkipRom() == OneWireMaster::Success);
+    result = (OWSkipRom(ds2465) == OneWireMaster::Success);
     // Write new filter life to DS28E15
     if (result)
       result = (ds28e15_22_25.writeAuthSegment(ds2465, authData.pageNum, authData.segmentNum, authData.segment, oldAuthData.segment, false) == OneWireSlave::Success);
@@ -225,7 +223,7 @@
   
   ds2465.OWSetSpeed(DS2465::OverdriveSpeed);
   
-  if (ds2465.OWReadRom(ds28e15_22_25.romId) != OneWireMaster::Success)
+  if (OWReadRom(ds2465, ds28e15_22_25.romId) != OneWireMaster::Success)
     return UnableToCommunicate;
   
   if (!checkProvisioned(provisioned))