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Paper 2004/206

ID-Based Proxy Signature Using Bilinear Pairings

Jing Xu and Zhenfeng Zhang and Dengguo Feng

Abstract

Identity-based (ID-based) public key cryptosystem can be a good alternative for certificate-based public key setting, especially when efficient key management and moderate security are required. A proxy signature scheme permits an entity to delegate its signing rights to another entity. But to date, no ID-based proxy signature schemes with provable security have been proposed. In this paper, we formalize a notion of security for ID-based proxy signature schemes and propose a scheme based on the bilinear pairings. We show that the security of our scheme is tightly related to the computational Diffie-Hellman assumption in the random oracle model.

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Publication info
Published elsewhere. Unknown where it was published
Keywords
ID-based signaturesproxy signaturesbilinear pairingsprovable security.
Contact author(s)
xujing @ is iscas ac cn
History
2004-08-23: revised
2004-08-21: received
See all versions
Short URL
https://ia.cr/2004/206
License
Creative Commons Attribution
CC BY
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