A Novel and Effective On-Line/Off-Line Threshold Signature Project
Huang Ting-hui · Jisuanji fangzhen · 2009
Based on the shortage of the conventional threshold signature project,a novel and effective on-line/off-line threshold signature project is proposed in this paper. Project gives the concrete algorithm steps of key generation,off-line and on-line phase,and the safety of the project has been proven from the aspects of integrity and reliability in random prophetic model. The method of using zero-knowledge to verify partial signature guarantees the robustness,and the thesis analyzes the computational complexity,storage complexity,and communication complexity of the project to verify the feasibility. Analysis results show that the project solves the key leakage problem and greatly reduces the offline stage's computation and storage,and it reduces the on-line phase's traffic,meantime it enhances the answer speed of the signature greatly and has a great security and robustness.