一种新的无收据的电子投票方案

New Receipt-free Electronic Voting Scheme

给出无收据性的定义,并证明满足无收据性的充分必要条件.利用同态ElGamal加密、门限ElGamal加密和零知识证明等技术,设计一个高效的电子投票方案.该方案满足广泛可验证性和无收据性,同时还能保证选票内容的秘密性和投票者的合法性等性质.并且同以前方案不同的是,新方案降低了对可信任第三方的安全要求,因此更符合实际要求.

This paper first gives out definition of receipt-freeness, and prove necessary and sufficient condition of receipt-freeness. Then by employing homomorphic EIGamal encryption, threshold ElGamal encryption and zero-knowledge proof, this paper designs an efficient electronic voting scheme, which satisfies universal verifiability, receipt-freeness, also eligibility, privacy and so on. Different from the previous protocols, there needs less security requirement on ＂trusted third party＂ in the new scheme, which is more practical.