Volume 4 Number 6 (Jun. 2009)
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JCP 2009 Vol.4(6): 444-452 ISSN: 1796-203X
doi: 10.4304/jcp.4.6.444-452

Provably Secure Certificate-based Proxy Signature Schemes

Jiguo Li, Lizhong Xu, Yichen Zhang
College of Computer and Information Engineering, Hohai University, Nanjing, P.R.China, 210098
Abstract—In this paper, we first propose the definition and security model of certificate-based proxy signature (CBPS). We then show that the certificate-based proxy signature scheme presented by Kang, Park and Hahn in CT-RSA 2004 are insecure against key replacement attacks. We further propose two certificate-based proxy signature schemes, which are shown to be existentially unforgeable against adaptive chosen message attacks under the computational Diffie-Hellman assumption in the random oracle model. Compared with the certificate-based proxy signature scheme in CT-RSA 2004, one of our schemes enjoys the same signature length and computation cost, another one requires a little more computation and communication cost.

Index Terms—Certificate-based signature; proxy signature; key replacement attack.

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Cite: Jiguo Li, Lizhong Xu, Yichen Zhang, "Provably Secure Certificate-based Proxy Signature Schemes," Journal of Computers vol. 4, no. 6, pp. 444-452, 2009.

General Information

ISSN: 1796-203X
Frequency: Monthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat, CNKI,etc
E-mail: jcp@iap.org
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