Efficient Provable Secure ID-Based Directed Signature Scheme without Random Oracle

Authors:
Jianhong Zhang;Yixian Yang;Xinxin Niu
Affiliations:
College of sciences, North China University of Technology, Beijing, China 100041 and School of information engineering, Beijing University of posts and telecommunications, Beijing, China 100876;School of information engineering, Beijing University of posts and telecommunications, Beijing, China 100876;School of information engineering, Beijing University of posts and telecommunications, Beijing, China 100876
Venue:
ISNN 2009 Proceedings of the 6th International Symposium on Neural Networks: Advances in Neural Networks - Part III
Year:
2009

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Abstract

As a special signature, a directed signature is a type of signature with verification ability which is restricted. In a directed signature scheme, a designated verifier can exclusively verify the validity of a signature. If necessary, the designated verifier or the signer can prove the correction of a signature to a third party. Directed signature schemes are suitable for applications such as bill of tax and bill of health. In this paper, an ID-based directed signature scheme without random oracle is proposed by combining ID-based cryptology with Waters signature. We also give the syntax and security notion of ID-based directed signature without random oracle: unforgeability and invisiblity. Finally, we show that the proposed scheme is unforgeable under the computational Diffie-Hellman assumption, and invisible under the Decisional Bilinear Diffie-Hellman assumption.