Identity-based proxy signature from pairings

Authors

Wei Wu, University of WollongongFollow
Yi Mu, University of WollongongFollow
Willy Susilo, University of WollongongFollow
Jennifer Seberry, University of WollongongFollow
Xinyi Huang, University of WollongongFollow

RIS ID

21351

Publication Details

Wu, W., Mu, Y., Susilo, W., Seberry, J. R. & Huang, X. (2007). Identity-based proxy signature from pairings. In B. Xiao, L. Yang, J. Ma, C. Muller-Schloer & Y. Hua (Eds.), International Conference on Autonomic and Trusted Computing (pp. 22-31). Berlin Heidelberg: Springer.

Abstract

A proxy signature scheme allows an entity to delegate itssigning capability to another entity (proxy) in such a way that theproxy can sign messages on behalf of the delegator. Proxy signatureshave found numerous practical applications such as distributed systems,mobile agent applications, etc. Recently, Xu, Zhang and Feng proposedthe first formal models of identity based proxy signature. Unfortunately,their model does not capture the notion of adaptively chosen messageand chosen identity attacker in identity based system. In this paper, weredefine the security models of identity based proxy signature to capturethe most stringent attacks against adaptively chosen message andchosen identity attacker. We also propose a new provably secure identitybasad proxy signature scheme whose security is based on the hardnessof Computational Diffie-Hellman problem in the random oracle model.