New Identity-based Threshold Designated Verifier Signature Scheme

摘要

Designated-verifier signatures helped the signature users control the arbitrary spread of signature,and effectively settled the conflict between authenticity and privacy.Under the assumption of BDH problem,based on bilinear pairings,using fuzzy identification and threshold ideological advances a new identity based threshold designated-verifier signature scheme.The signers can designate the verifiers concretely and multi-designate-verifier can verify the signature in the scheme.The scheme can prove non-forgeability and privacy notions under the random oracle model.