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Improved Delegation-Based Authentication Protocol for Secure Roaming Service with Unlinkability
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- Authors
- Taek-Young Youn, Jongin Lim
- Issue Date
- 2010-09
- Citation
- IEEE Communications Letters, v.14, no.9, pp.791-793
- ISSN
- 1089-7798
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- Recently, Lee et al. proposed a delegation-based authentication protocol which provides secure and private roaming service for portable communication systems in global mobility networks. In this paper, we show that 1) Lee et al.'s protocol cannot protect users' privacy even though the protocol provides the user identity privacy; and 2) the unlinkability is required for delegation-based authentication protocols to provide user privacy. Moreover, we propose an improved protocol with the unlinkability by modifying Lee et al.'s protocol. © 2010 IEEE.
- KSP Keywords
- Communication system, Delegation-based authentication, Global mobility networks, Identity Privacy, User Privacy, authentication protocol, roaming service