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ThinkMind // ICN 2011, The Tenth International Conference on Networks // View article icn_2011_2_30_10336


Anonymous Key Issuing Protocol for Distributed Sakai-Kasahara Identity-based Scheme

Authors:
Amar Siad
Moncef Amara

Keywords: Key issuing protocols; Distributed key generation; Anonymous IBE

Abstract:
Practical implementations of identity based cryptosystems are faced to key escrow problem, which is not always a good property in many realistic scenarios. Thus, efficient key issuing protocols are needed to generate and deliver user's private keys in secure manner without leakage. Three major approaches exist in the literature, we are interested in two of them. The first one suggested the distribution of the master secret key over multiple authorities. The second approach, concerned about user privacy, and proposed to generate and deliver user's private keys in an anonymous manner. Each one of the above approaches has its own drawbacks and key escrow problem is steal an issue in identity-based systems. In this paper, we design a new framework that combines the two approaches above to solve key escrow problem and single point of failure in Identity-based Encryption systems by allowing privacy-preserving propriety. As instantiation, we construct an anonymous key issuing protocol for the distributed sakai-kasahara IBE scheme presented recently by textit{Kate and Goldberg} based on the anonymous key issuing protocol proposed by Chow, along with a security analysis.

Pages: 35 to 40

Copyright: Copyright (c) IARIA, 2011

Publication date: January 23, 2011

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-113-7

Location: St. Maarten, The Netherlands Antilles

Dates: from January 23, 2011 to January 28, 2011

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