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Title:
Non-delegatable Identity-based Designated Verifier Signature
Authors: Qiong Huang, Willy Susilo, Duncan S. Wong
Abstract:Designated verifier signature is a cryptographic primitive which allows a signer to convince a designated verifier of the validity of a statement but in the meanwhile prevents the verifier from transferring this conviction to any third party. In this work we present the \emph{first} identity-based designated verifier signature scheme that supports non-delegatability, and prove its security in the random oracle model, based on computational Diffie-Hellman assumption. Our scheme is perfectly non-transferable, and its non-delegatability follows the original definition proposed by Lipmaa et al. \cite{LipmaaWaBa05}.
ePrint: https://eprint.iacr.org/2009/367
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