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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/4442

Title: A Fully-Functional group signature scheme over only known-order group
Authors: Miyaji, Atsuko
Umeda, Kozue
Issue Date: 2004
Publisher: Springer
Magazine name: Lecture Notes in Computer Science
Volume: 3089/2004
Start page: 164
End page: 179
DOI: 10.1007/b98360
Abstract: The concept of group signature allows a group member to sign message anonymously on behalf of the group. In the event of a dispute, a designated entity can reveal the identity of a signer. Previous group signature schemes use an RSA signature based membership certificate and a signature based on a proof of knowledge(SPK) in order to prove the possession of a valid membership certificate. In these schemes, SPK is generated over an unknown-order group, which requires more works and memory compared with a publicly-known-order group. Recently, a group signature based on a known-order group is proposed. However, it requires an unknown-order group as well as a known-order group. Furthermore, unfortunately, it does not provide the function of revocation. In this paper, we propose the group signature scheme based on only publicly-known-order groups. Our scheme improves the Nyberg-Rueppel signature to fit for generating membership certificates and uses SPKs over a cyclic group whose order is publicly known. As a result, our scheme reduces the size of group signature and the computational amount of signature generation and verification.
Rights: This is the author-created version of Springer, Atsuko Miyaji, Kozue Umeda, Lecture Notes in Computer Science, 3089/2004, 2004, 164-179.The original publication is available at www.springerlink.com, http://www.springerlink.com/content/yy7qyrdamw9q4x44
URI: http://hdl.handle.net/10119/4442
Material Type: author
Appears in Collections:b10-1. 雑誌掲載論文 (Journal Articles)

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