International Association for Cryptologic Research

International Association
for Cryptologic Research


Paper: An Efficient One-move Nominative Signature Scheme

Dennis Y. W. Liu
Qiong Huang
Duncan S. Wong
Search ePrint
Search Google
Abstract: A signer in a Nominative Signature (NS) scheme can arbitrarily choose a nominee, then jointly generate a signature in such a way that the signature can only be verified with the nominee's consent. NS is particularly useful in user certification systems. Currently, the only secure NS scheme available requires multi-round communications between the nominator and the nominee during signature generation. This implies that an NS-based user certification system requires a certification issuer to interact with a user using a complicated multi-round protocol for certificate issuance. It remains an open problem to construct an efficient and non-interactive NS scheme. In this paper, we solve this problem by proposing the first efficient one-move (i.e. non-interactive) NS scheme. In addition, we propose an enhanced security requirement called Strong Invisibility, and prove that our scheme satisfies this strong security requirement.
  title={An Efficient One-move Nominative Signature Scheme},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / Digital Signatures, Nominative Signatures},
  note={ 13713 received 3 Jul 2007, last revised 19 Jul 2007},
  author={Dennis Y. W. Liu and Qiong Huang and Duncan S. Wong},