Security Protocol for Sensor Networks

Security Protocol for Sensor Networks

Sensor networks are used in factories.
Sensor networks operate in industrial, utility process flow and environmental monitoring environments. Most sensor networks were expected to be contained within a single site like a factory, therefore few have security systems incorporated in them. The advent of wireless sensor networks, often used for security, creates a more sensitive environment to which security measures need to be applied.

 
Function
Sensors also are known as Remote Terminal Devices (RTUs). The most popular networking systems for these types are MODBUS, Profibus, DNP-3 and ICCP (Inter-Control Center Communications Protocol). None of these protocols include security systems. Wireless sensor networks also are used for security systems, detecting intruders and triggering alerts, or deterrents, like floodlighting.

Features
Sensors generally are low-power devices with little processing power. The demands of security systems are difficult to embed in such devices. TinySec is a lightweight encryption and authentication system that can be used for sensor networks without draining the power of sensor units. Encryption key distribution is another issue in these networks. LEAP and TinyPK are two key distribution systems suitable for wireless sensor networks.

Development

 

The notion of security has been overlooked in wired sensor networks due to the assumption that physical security of the network was sufficient. The introduction of wireless sensor networks sparked activity to provide sufficient security. This issue is an ongoing field of study.