Abstract: Through analyse the reference[1],we found tenderer’s bids may be leaked that because of the producing course of random numbers which are used to test bids have some faults. We construct a new auction protocol to solve that problem.Our improved scheme can solves the secure hidden dangers and have higher security and efficiency than reference[1].

Key words: electronic auction, multiple items, secure multiparty computation, sharing secret

摘要： 通过对文献[1]的分析，我们发现其方案中用于检验竞拍者标价的随机数的产生过程存在着安全隐患，这将导致竞拍者的标价提前泄露。针对这类情况，我们重新设计了一个拍卖方案，解决了标价提前泄露的问题，并且分析和证明了该方案的安全性。同文献[1]相比，我们的方案更加安全高效。

关键词: 电子拍卖, 多拍卖物, 安全多方计算, 秘密共享