关键词: 门限签名, 部分盲签名, 双线性对, 椭圆曲线

Abstract: Partially blind signature schemes in practice can not only protect the message sender’s privacy efficiently but also limit the sender’s ability by embedding the signer’s information.A threshold signature scheme distributes the signing abilities to a group of signers,and avoids the system unsecurity.Recently the researches in these two signature schemes are popular.Meanwhile the signature schemes from bilinear pairings have attracted more attentions.In this paper a new threshold partially blind signature scheme from bilinear pairings was proposed. Further more the security and efficiency of the proposed scheme were analyzed.

Key words: threshold signature, partially blind signature, bilinear pairings, elliptic curve