关键词: 门限签名, 盲签名, Weil对, 双线性Diffie-Hellman假设

Abstract: This paper proposes a threshold blind signature scheme，called pairing-based threshold blind signature scheme.The proposed scheme is constructed on Weil pairing on elliptic curves and the Shamir’s secret sharing scheme，and the validity and the security of the scheme are analysed as well.A partial blind signature can be expediently generated by participants under the bilinear Diffie-Hellman assumption，and any public verifier can check the validity of partial signature and threshold blind signatures.However，any attacker cannot forge partial signature.Given the knowledge of all the participants’ secret values，a threshold blind signature cannot be forged.

Key words: threshold signature, blind signature, Weil pairing, bilinear Diffie-Hellman assumption