一个利用群签名的电子拍卖协议

利用群签名与可验证的秘密共享方案设计了一个新的密封投标的电子拍卖协议。在该协议中,多个拍卖者共同主持拍卖过程,所有的拍卖者通过可验证的秘密共享方案共享一个密钥,这使得投标者在投标时只需要一次加密,其计算量与拍卖者的数量无关;另外,中标者的身份是由群管理者根据中标者对投标消息的签名来确定的,所以一次注册后,投标者可同时参加多个拍卖活动,而不会泄露自己的身份。

Electronic auction protocol with group signature

Electronic auction is one of the methods of electronic commerce. A new sealed-bid electronic auction based on group signature and verifiable secret sharing scheme was proposed. In this protocol, multi-auctioneers participated in auction synchronously, and all auctioneers shared one key, therefore the bidder needed only one encryption in bidding, and the computation was independent of the number of auctioneers. In addition, the identity of the winner was identified by group manager according to signature of the winner's bidding message, therefore after registering once, bidder could participate in many auctions synchronously without disclosing his identity.