Secure voting system based on blockchain and threshold cryptography

Traditional electronic voting schemes based on blind signature often rely on fully trusted signature authorities, tally authorities, and face security threats. In this paper, threshold technology and privacy computing are used to realize decentralized data computing, decentralize the power of signature authorities and tally authorities; The blockchain technology is used to realize the function of electronic bulletin board and complete decentralized data storage, so as to ensure the openness and transparency of the whole election process. Furthermore, the proposed scheme is based on elliptic curve. Compared with the similar schemes based on bilinear pair, its computational complexity is reduced by an order of magnitude and has higher efficiency. Finally, this paper analyzes the security attributes and performance of the proposed scheme, and the experimental results of Python show that the proposed scheme has good performance in the optimized environment.