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An efficient identity-based group signature scheme over elliptic curves

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Open access
Authors
Han, Song
Liu, Wan-Quan
Date
2004
Type
Conference Paper

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Citation
Han, Song and Liu, Wan-quan. 2004. An efficient identity-based group signature scheme over elliptic curves, in Freire, M.M. and Chemouil, P. and Lorenz, P. and Gravey, A. (ed), European Conference on Universal Multiservice Networks (ECUMN 2004), Oct 25 2004, pp. 417-429. Portugal: Springer.
Source Title
Lecture Notes in Computer Science
Source Conference
3rd European Conference on Universal Multiservice Networks. (ECUMN'2004)
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Faculty
Curtin Business School
School of Information Systems
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The original publication is available at: http://www.springerlink.com

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Abstract

Group signatures allow every authorized member of a group to sign on behalf of the underlying group. Anyone except the group manager is not able to validate who generates a signature for a document. A new identity-based group signature scheme is proposed in this paper. This scheme makes use of a bilinear function derived from Weil pairings over elliptic curves. Also, in the underlying composition of group signatures there is no exponentiation computation modulo a large composite number. Due to these ingredients of the novel group signatures, the proposed scheme is efficient with respect to the computation cost in signing process. In addition, this paper comes up with a security proof against adaptive forgeability.