¹Computer Science Department, Shanghai Normal University, Shanghai, China
²Computer Science and Engineering Department, Shanghai Jiaotong University, Shanghai, China

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Abstract—Mobile ad-hoc networks (MANETs) have received a lot of attention recently, adapting proxy re-signature to work in such environments is challenging. In this paper, we propose a novel and efficient proxy re-signature scheme, which provides a flexible and secure way for authorizing the new nodes of mobile ad-hoc networks. The proposed scheme is unidirectional, single-use and non-transitive. Compared with the previous schemes, we need only a few public parameters and no pairing operation in signature and resignature algorithms. We will also give the concrete security analysis of the proposed scheme. Its security is based on the Computational Diffie-Hellman assumption in the random oracle model. Thus, the scheme is suitable for the mobile ad-hoc networks, for it is completely non-interactive and is very simple.

Index Terms—Proxy Re-Signature, Unidirectional, Mobile Ad-Hoc Network, CDH Assumption.

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Cite: Xuan Hong, Yu Long, "A Novel Unidirectional Proxy Re-Signature Scheme and Its Application for MANETs," Journal of Computers vol. 7, no. 7, pp. 1796-1800, 2012.