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.hpp
- Revision:
- 6:b6bafd0a7013
- Parent:
- 1:e1c7c1c636af
- Child:
- 8:594529956266
--- a/SensorNode.hpp Wed Apr 20 20:13:33 2016 +0000 +++ b/SensorNode.hpp Thu May 12 14:40:14 2016 -0500 @@ -34,16 +34,19 @@ #ifndef _SENSORNODE_HPP #define _SENSORNODE_HPP -#include <cstdint> +#include <stdint.h> #include <cstring> #include "DS7505.hpp" #include "MAX44009.hpp" -#include "OneWire_Memory/Authenticators/DS28E15_22_25/DS28E15_22_25.hpp" +#include "Authenticators/DS28E15_22_25/DS28E15_22_25.h" -class DS2465; -class RomId; class SensorData; +namespace OneWire +{ + class RomId; + namespace Masters { class DS2465; } +} namespace mbed { class I2C; } /// Interface to the Authenticated Sensor Node peripheral board. @@ -62,7 +65,7 @@ /// @param ds7505_i2c_addr I2C bus address of the DS7505 in mbed format. /// @param max44009_i2c_addr I2C bus address of the MAX44009 in mbed format. /// @param ds2465 Interface to DS2465 on the Controller. - SensorNode(mbed::I2C & i2c, std::uint8_t ds7505_i2c_addr, std::uint8_t max44009_i2c_addr, DS2465 & ds2465); + SensorNode(mbed::I2C & i2c, uint8_t ds7505_i2c_addr, uint8_t max44009_i2c_addr, OneWire::Masters::DS2465 & ds2465); /// Detect if an authentic Sensor Node is connected. /// @param userEntropy Additional entropy to supply to the RNG. @@ -81,7 +84,7 @@ bool readSensorData(SensorData & sensorData); /// Get the ROM ID for this sensor node. - const RomId & romId() const { return ds28e15_22_25.romId; } + const OneWire::RomId & romId() const { return ds28e15_22_25.romId; } /// Get the initial lux measurement for this sensor node. double initialLux() const { return m_initialLux; } @@ -93,9 +96,9 @@ /// Authenticated data stored in DS28E15. struct AuthData { - static const std::uint8_t initialFilterLife = 100; - DS28E15_22_25::Segment segment; - std::uint8_t & filterLife; + static const uint8_t initialFilterLife = 100; + OneWire::Authenticators::DS28E15_22_25::Segment segment; + uint8_t & filterLife; unsigned int pageNum, segmentNum; AuthData() : filterLife(segment[0]), pageNum(0), segmentNum(0) { reset(); } @@ -108,7 +111,7 @@ }; /// Padding value used in creation of the Slave Secret. - static const std::uint8_t defaultPaddingByte = 0x00; + static const uint8_t defaultPaddingByte = 0x00; /// Indicates hardware RNG is initialized. static bool rngInitialized; @@ -123,10 +126,10 @@ AuthData authData; // Hardware interfaces - DS28E15_22_25 ds28e15_22_25; ///< DS28E15 for authentication. + OneWire::Authenticators::DS28E15_22_25 ds28e15_22_25; ///< DS28E15 for authentication. DS7505 ds7505; ///< DS7505 temperature sensor. MAX44009 max44009; ///< MAX44009 optical light sensor. - DS2465 & ds2465; ///< Interface to DS2465 on Controller. + OneWire::Masters::DS2465 & ds2465; ///< Interface to DS2465 on Controller. /// Initialize sensors for measurement. /// @returns True on success.