(华南理工大学 理学院, 广州 510640)
Improvement of electronic lottery scheme based on protecting content of lotteries
TANG Xi-lin, GUO Hai-gen
(College of Science, South China University of Technology, Guangzhou 510640, China)
Abstract:This paper designed an electronic lottery scheme which could protect the content of lotteries.This scheme could ensure that the lottery issuers know nothing about relevant information of lotteries before cash in the bonus. By adopting an electronic cash protocol,this scheme could ran under the off-line bank. Because the anonymity of the electronic cash,it could protect the purchasers’ privacy better. By adopting the hash chain,all the lotteries could be verified publicly,prevented the issuers from forging lotteries,the sales,the bonus as well as attacks from their own staff. There are many security properties in this scheme,such as privacy,un-forgeable,non-repeatable,traceable,non-repudiation,publicly verification and so on. ......