A Weighted E-Voting Scheme with Secret Weights  

作　　者：ZHONG Hong HUANG Liusheng XIONG Yan 

机构地区：[1]Department of Computer Science, University of Science and Technology of China, Hefei 230027, China [2]National High Performance Computing Center at Hefei, Hefei 230027, China

出　　处：《Chinese Journal of Electronics》2006年第3期413-416,共4页电子学报（英文版）

摘　　要：The weighted threshold E-voting has great value in many e-commerce applications, whose votes are tallied in proportion with voters＇ secret weights. It＇s necessary to design a scheme that satisfies the security requirements of commonly e-voting scheme and preserve the privacy of weights since the privacy of investor will be revealed if the weight is leaked. The previous solutions are mostly based on homomorphic threshold EIGamal cryptosystem and zero-knowledge proofs protocol that suffers from O（n） exponentiation when preparing proofs. This paper describes a secure and practical scheme that adopts novel secure two-party scalar product and private comparison protocol with untrusted third party. The computational cost can be O（n） by selecting reasonable security parameter. Our solution meets all security requirements of weighted voting including the privacy of vote and weight, Dispute-freeness, Fairness and Receipt-Freeness. It＇s worthwhile for practical applications.

关 键 词：Weighted E-voting Secure two-party scalar product Private comparison. 

分 类 号：TN918.2[电子电信—通信与信息系统]