NDLI: Computationally and Resource Efficient Group Key Agreement for Ad Hoc Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Choudhary, D.R. Dev Anshul Roy, S. Thejaswi, C.S.
Copyright Year	2007
Description	Author affiliation: Airtight Networks, Pune, India (Choudhary, D.R.)
Abstract	Secure and reliable group communication is an important aspect of security in distributed ad hoc sensor networks. Most sensors are built to be inexpensive, low power devices and consequently have limited computational and communication resources. Constraints in resources make most conventional security protocols, such as Diffie-Hellman key exchange impractical. This work adapts existing work on tree-based group key agreement that combines key trees with Diffie-Hellman key exchange, by replacing expensive public key operations with relatively cheaper symmetric key operations. The modular exponentiations in $Z_{n}*$ used in Diffle-Hellman key exchange are replaced by polynomial evaluations in $GF(2^{m})$ Galois fields, thereby reducing the code space and time complexity requirements for the protocols substantially. This makes the protocol adaptable for use on resource-constrained sensor networks. We also focus on secure and efficient group key management in the case of group mutation. Our group key management scheme will set up a per-session shared secret key among the group members when new members join or existing members leave the group. We also discuss a performance analysis of our scheme wherein we show that our protocol is efficient in terms of computational and memory requirements.
Starting Page	1
Ending Page	10
File Size	998876
Page Count	10
File Format	PDF
ISBN	1424406137
DOI	10.1109/COMSWA.2007.382601
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-01-07
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer networks Data security Wireless sensor networks Peer to peer computing Public key Galois fields Performance analysis Cryptographic protocols Public key cryptography Computer network management Computational and Memory Requirements Secure Group Communication Group Key Agreement Session Key Wireless Sensor Networks Dynamic Peer Groups Symmetric Polynomials Galois Field (GF(q))
Content Type	Text
Resource Type	Article

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