1. WIRELESS SENSOR NETWORK SECURITY USING GROUP KEY MANAGEMENT SCHEME
Presented By:
Mohammed Saleh
CS 599a Fall06

2. WSN Background WSN Architecture WSN Security Issues and requirements
Approach

3. Background 100/1000 nodes Low cost solution Limited resources
Controlled or uncontrolled environment

4. WSN Architecture

5. WSN Architecture A sensor Nodes Consist of: Battery Memory Processor
Radio links for communicating

6. Sensor Node Constraints
Battery Power/
Energy
Processor
Rechargeability
Sleep Patterns
Memory

7. Network constraints Limited Pre-Configuration
Unreliable communications
Frequent Routing Changes

8. WSN Architecture

9. WSN Architecture

10. Security in Wireless Networks

11. Security Requirements
Confidentiality
Authenticity
Integrity
Freshness
Scalability
Availability
Accessibility
Self-Organization
Flexibility

12. Security in Wireless Networks
Attacks
Poor physical protection
Attacks not only from outside but
also from within the network from
compromised nodes.

13. WSN Attacks

14. Security in Wireless Networks
Security concepts:
Cryptography
- Public/private key
Diffie hellman

15. Group key protocol
key establishment protocols can be classified into two categories:
Group key management
- Group key is usually created and updated by a
central key server, and then securely distributed to
all members.
Tree-based key management
- each node contributes a fraction of the group
key and the creation and update of group
key are the joint work of all members.

16. Group key management Proposed approach:
We propose a security protocol that takes advantage of a group key management scheme for a hierarchical sensor network. Our scalable algorithm is based on modifying a classic security protocol by the modification to the multi party Diffie-Hellman protocol to accommodate sensor networks.

17. Group Key Mgmt

18. References
SEYIT A. C¸AMTEPE and B¨ ULENT YENER, Key Distribution Mechanisms for Wireless Sensor Networks: a Survey. Technical Report TR (March 23, 2005).
David W. Carman, Peter S. Kruus, and Brian J.Matt. Constraints and approaches for distributed sensor network security. NAI Labs Technical Report #00-010, September 2000.
Wenliang Du, Jing Deng, Yunghsiang S. Han, Shigang Chen and Pramod Varshney. A Key Management Scheme for Wireless Sensor Networks Using DeploymentKnowledge. IEEE INFOCOM, 2004.
L. Eschenauer and V. D. Gligor. A key-management scheme for distributed sensor networks, in Proceedings of the 9th ACM conferenceon Computer and
Communications security, Washington, DC, USA, November
Biswajit Panja, Review Paper for PhD Research Readiness, Key Management for
Secure Sensor Networks

19. References
RSA Encryption Standard, Version 1.4. San Mateo, Ca.: RSA Data Security, Inc., 1991.
W. Diffie and M.E. Hellman, New directions in cryptography, IEEE Transactions on Information Theory 22 (1976),
Multicast Security: A Taxonomy and Efficient Constructions. IEEE Press, 1999.
Ten Emerging Technologies That Will Change The World, Feb.2003.
Mihaela Cardei My T. Thai Yingshu Li Weili Wu, Energy-Efficient Target
Coverage in Wireless Sensor Networks, IEEE INFOCOM 2005.
A. D. Wood and J. A. Stankovic. Denial of service in sensor networks. Computer
35(10):54–62, 2002.
J. Newsome, E. Shi, D. Song, and A. Perrig. The Sybil attack in sensor networks:
analysis & defenses. Proceedings of the third international symposium on Information
processing in sensor networks, pp. 259–268. ACM Press, 2004.
Wireless Sensor Network Security: A Survey John Paul Walters, Zhengqiang Liang,
Weisong Shi, and Vipin Chaudhary Department of Computer Science Wayne State
University5143 Cass Ave, MI 48202, USA

20. References
J. Deng, R. Han, and S. Mishra. Countermeasuers against traffic analysis in wireless sensor networks. Tech. Rep. CU-CS , University of Colorado at Boulder, 2004.
Peng Peng , P2P-HGKM: An Efficient Hierarchical Group Key Management
Protocol for Mobile Ad-Hoc Networks, B.Sc., Peking University, 2000
Eric Ricardo Anton, Otto Carlos Muniz Bandeira Duarte, Group Key Establishment in Wireless Ad Hoc Networks , Workshop em Qualidade de Serviço e Mobilidade – 2002.