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Strong Designated Verifier ID-based Threshold Ring Signature Scheme

Lei Wu, Defa Hu

Abstract


In this paper, we propose a new strong designated verifier ID-based threshold ring signature scheme. Using the thought of distributed secret sharing, the new scheme provides a way for more than members in a ring of members to generate a signature to only a designated verifier anonymously. Except for the verifier, no one knows that the signature is generated by a ring member or the designated verifier and anyone can not determine the signers’ identity. We show that our scheme is secure against the adaptive chosen message and identity attack in the random oracle model. It can satisfy all the strong designated verifier security properties and has a better computational efficiency.



Keywords


ring signature, strong designated verifier, threshold signature, bilinear pairing

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