Cryptology ePrint Archive: Report 2011/528

Efficient Delegation-Based Authentication Protocol with Strong Mobile Privacy

Jian-Zhu Lu, Hong-Qing Ren, and Jipeng Zhou

Abstract: In 2008, Tang and Wu designed a one-time alias mechanism for protecting the mobile privacy of a user. Recently, Youn and Lim proposed an improved delegation-based authentication protocol to provide private roaming service. In this article, we show that a link between requests may disclose information about the mobile privacy of a sender, and that the aliases of a user fail to achieve the unlinkability in Tan-Wuís scheme. We remedy this situation by suggesting an enhanced protocol that utilizes a pseudorandom function. Compared to Youn-Limís protocol, our design is more efficient than theirs.

Category / Keywords: applications / Security, mobile privacy, mutual authentication, public-key cryptography

Date: received 3 Sep 2011

Contact author: tljz at jnu edu cn

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Version: 20110928:133108 (All versions of this report)

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