A Secure Multi-party Signature Scheme Based on Trust Mechanism

Aiming at the problem of trust, we propose a secure multi-party signature scheme based on trust mechanism. In this scheme, we introduce a trust vector with time-stamped and form a trust matrix composed of multidimensional vectors to record the behavior of the participants periodically. Finally, a trusted evaluation mechanism is established for the participants. Under the premise of participant trustworthiness, a secure multi-party dynamic threshold signature scheme is constructed by secret sharing technology. The security analysis shows that the scheme can effectively suppress the vandalism of malicious participants. it is forward security and can resist mobile attacks. Performance analysis shows that the scheme has lower computational complexity and higher execution efficiency.