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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/9066

Title: A Selectable k-Times Relaxed Anonymous Authentication Scheme
Authors: Emura, Keita
Miyaji, Atsuko
Omote, Kazumasa
Keywords: Anonymous Authentication
Issue Date: 2009
Publisher: Springer
Magazine name: Lecture Notes in Computer Science
Volume: 5932/2009
Start page: 281
End page: 295
DOI: 10.1007/978-3-642-10838-9_21
Abstract: In a k-Times Anonymous Authentication (k-TAA) scheme, Application Providers (APs) authenticates each group member in k times. A user can preserve his/her own privacy and an AP can restrict the number of used services to just k-times, since users are identified if they access an AP more than k times. In all previous schemes, each AP assumes the same k for all users. Added to this, total anonymity of unlinkability requires large computation amount such as pairing computations compared with non-anonymous schemes. In this paper, we propose a selectable k-TAA scheme with relaxed anonymity. Relaxed anonymity is an intermediate level of privacy required between total anonymity and linkability, where authentication executions for the same AP are linkable, but an authentication execution with an AP v0 and an authentication execution with an AP v1 (v0 ≠ v1) are unlinkable. Our authentication algorithm is efficient than existing ones thanks to this relaxed notion.
Rights: This is the author-created version of Springer, Keita Emura, Atsuko Miyaji, and Kazumasa Omote, Lecture Notes in Computer Science, 5932/2009, 2009, 281-295. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/978-3-642-10838-9_21
URI: http://hdl.handle.net/10119/9066
Material Type: author
Appears in Collections:b10-1. 雑誌掲載論文 (Journal Articles)

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