摘要： 基于环签名理论提出一个电子拍卖方案，适用于公司内部或者具有排外性的团体内部的拍卖，拍卖期间，成员可以在任何地点、任何时间提交自己的投标消息，等到拍卖结束后，再提交自己相应的投标值，匿名的同时又能证明投标消息的合法性，既证明了自己属于组内成员，又不会泄漏投标者的确切身份，保护了投标者的隐私。

关键词: 环签名, 电子拍卖, 比特承诺, 匿名性, hash函数

Abstract: This paper presents an electronic auction protocol based on ring signature theory. This protocol is designed for companies’ exclusive auction. The bidders are allowed to submit their bid messages anywhere at any time during the bid period. After this period, they commit their bids. The protocol can protect their privacy, and verify the validity of the bidders. That is, every bidder can prove that he belongs to the group, while does not leak any information of his exact identity, which can protect the bidders’ privacy better.

Key words: ring signature, electronic auction, bit commitment, anonymity, hash function

中图分类号: 

• TP309