Cryptology ePrint Archive: Report 2005/300

Towards Security Two-part Authenticated Key Agreement Protocols

Songping Li and Quan Yuan and Jin Li

Abstract: We first present a new security 2-AK protocol, which is more secure and more efficient than previously proposed ones. Meanwhile, we point that Xie's ID-2-AK protocol modified from McCullagh-Barreto in CT-RSA 2005 doesn't provide protection against KCI attack likewise, and finally utilize the modular arithmetic, first proposed in MQV and also used in Kim, to get a modified new ID-2-AK protocol. On second thoughts, we give another ID-2-AK protocol utilizing the operation of addition in finite field like our forenamed 2-AK protocol. The two ID-2-AK protocols are in possession of all the desired security attributes. We also compare our new protocols with others in terms of computational cost and security properties.

Category / Keywords: cryptographic protocols / key management, authenticated protocol, ID-based, Key Compromise Impersonation

Date: received 25 Aug 2005, last revised 7 Sep 2005

Contact author: lsp at pku edu cn

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Note: Minor revision

Version: 20050907:060938 (All versions of this report)

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