关键词: 门限-多重签名, 分布式系统, 门限签名, 多重签名, 可追踪性

Abstract: Threshold-multisignature schemes combine the properties of threshold group-oriented signature schemes and multisignature schemes.This kind of signature scheme allows a threshold t or more group members to collaboratively sign on a message and the signers’ identifications can be traced and verified.A fully distributed threshold-multisignature scheme is proposed in this paper.The scheme is developed from a proved secure single signature scheme and has the same security of its basic version.In the progress of the protocols one secure signature scheme and one secure signcryption scheme are incorporated to ensure that the protocols are secure and verifiable.The security and efficiency of the scheme and the protocols make the scheme practical.

Key words: threshold-multisignature, distributed systems, threshold-signature, multisignature, traceability