A Novel Strong Designated Verifier Signature Scheme without Random Oracles

In this paper, a novel pairing based strong designated verifier signature scheme based on non-interactive zero knowledge proofs is proposed. The security of the proposal is presented by sequences of games without random oracles; furthermore, this scheme has a security proof for the property of privacy of the signer's identity in comparison with the scheme proposed by Zhang et al. in 2007. In addition, this proposal compared to the scheme presented by Huang et al. in 2011 supports non-delegatability. The non-delegatability of the authors' proposal is achieved since they do not use the common secret key shared between the signer and the designated verifier in their construction.