Cryptology ePrint Archive: Report 2005/064

On Efficient Key Agreement Protocols

Anish Mathuria and Vipul Jain

Abstract: A class of efficient key agreement protocols proposed by Boyd is examined. An attack is demonstrated on a round-optimal example protocol of this class, and a simple countermeasure is suggested. The whole class is known to be vulnerable to an attack proposed by Bauer, Berson and Feiertag. A new class of key agreement protocols without this vulnerability but having the same advantages in efficiency is identified, and a number of concrete protocols are suggested.

Category / Keywords: cryptographic protocols / key management

Date: received 28 Feb 2005

Contact author: anish_mathuria at da-iict org

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Version: 20050301:142714 (All versions of this report)

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