基于HElib的安全电子投票方案

传统的电子投票应用中,若投票服务器管理方出现安全问题,投票过程中的匿名性、完整性和公开可验证性将难以保证。针对此问题,设计实现了一个基于全同态加密技术的电子投票方案。首先,基于全同态加密算法,结合PKI和数字签名技术设计了一个安全电子投票方案；然后针对电子投票的特殊性,基于HElib同态算法库设计了一个高效的同态密文加法器；最后在同态密文加法器的基础上,实现了安全电子投票系统。安全性方面,该投票方案有效的解决了电子投票中匿名性、完整性和公开可验证性的难题。而在性能上,测试表明该投票系统可以基本满足应用场景的使用需求。

Scheme on secure voting system based on HElib

In traditional electronic voting applications, if malwares infected the voting server, the anonymity, integrity and public verifiability of voting process would be difficult to guarantee. To solve this problem, this paper designed and implemented a secure voting system based on HElib. First, this paper designed a secure electronic voting scheme which was based on full homomorphic encryption algorithm and combined with PKI, digital signature technology. Then according to the particularity of electronic voting, it designed an efficient ciphertext adder based on HElib homomorphic algorithm library. Finally it implemented a secure electronic voting system by making use of the ciphertext adder. The voting system effectively solves the electronic voting anonymity, integrity and public verifiability problems in terms of security. Through the system tests, the voting system can basically meet the needs of application scenarios.