An escrow-less identity-based group-key agreement protocol for dynamic peer groups. (22nd July 2009)

• Record Type: Journal Article
• Authors: Chakrabarti, Saikat; Chandrasekhar, Santosh; Singhal, Mukesh
• Is Part Of: International journal of security and networks. Volume 4:Number 3(2009)
• Page Start: 171
• Page End: 188
• Publication Date: 2009-07-22
• Subjects: group key agreement -- identity-based cryptosystems -- key escrow -- DPGs -- dynamic peer groups -- supersingular elliptic curves -- bilinear pairing -- decisional bilinear Diffie-Hellman problem -- videoconferencing -- multi-user gaming -- cryptography -- security; Computer networks -- Security measures -- Periodicals; 005.805
• Languages: English
• ISSNs: 1747-8405

Abstract

Dynamic Peer Group (DPG) applications, such as video-conferencing and multi-user gaming environments have proliferated the internet and group-key agreement protocols are critical in securing DPG communication. Identity-based cryptosystems avoid certificate management complications inherent to traditional public-key systems but introduce key escrow, which is highly undesirable in most applications. We design a scalable technique to eliminate key escrow and develop a distributed, escrow-less identity-based group-key agreement protocol for securing resource-constrained DPG communication. The proposed protocol is provably secure against passive adversaries, resilient to active attacks, scalable and more cost effective than any such protocol. We provide a detailed theoretical analysis to support the claims.