International Association
for Cryptologic Research

In this study, 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 our proposal is achieved since we do not use the common secret

key shared between the signer and the designated verifier in our construction. Furthermore,

if a signer delegates her signing capability which is derived from her secret key on

a specific message to a third party, then, the third party cannot generate a valid designated

verifier signature due to the relaxed special soundness of the non-interactive zero

knowledge proof. To the best of our knowledge, this construction is the first attempt to

generate a designated verifier signature scheme with non-delegatability in the standard

model, while satisfying of non-delegatability property is loose.