Securing Wireless Sensor Networks

1
Securing Wireless Sensor Networks

• Cheyenne Hollow Horn
• SFS Presentation 2005

2
Presentation Outline

• Wireless Sensor Networks (WSN)
• Security for WSN
• Implementation
• Conclusion

3
Wireless Sensor Networks

• What is a WSN?
• Nodes
• Beacons
• Base Station

4
Wireless Sensor Networks

• Applications
• Military
• Medical
• Advantages
• Deployment
• Disposability
• Size

5
Securing WSN

• Requirements
• Data Confidentiality
• Data Authentication
• Data Integrity
• Data Freshness

6
Sensor Network Encryption Protocol

• Encryption keys
• Semantic security
• Counter used to encrypt message differently
• Never repeats
• Message Authentication Code

7
Implementation

• Time of Arrival method
• Ultrasonic transducers
• TinyOS
• MatLab
• MicaZ

8
Ultrasonic Time of Arrival
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Sensor Field Layout
Beacon
Beacon
Node
Node
Node
Node
Node
Base Station Connected to PC
Beacon
10
MicaZ
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Conclusion

• Setting up WSN
• Implementing security

12

• Questions?