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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.
Metadata
- Available format(s)
- 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
-
CC BY