基于比特承诺的电子拍卖方案

An Electronic Auction Scheme Using Bit-Commitment

在拍卖过程中如何保护投标者隐私和防止中标者反悔是设计安全电子拍卖系统的关键问题,也是目前网上拍卖系统急需解决的问题。文章利用伪随机数产生理论和比特承诺机制的优点,给出了一个实现随机标价的密封式电子拍卖方案。该方案除了满足投标者匿名、投标价保密、不可否认性、强可验证性等安全要求外,还具有技术简单、通信量小、随机标价、限时强迫兑现等优点。

The protection of bidder privacy and the prevention of bidder default are the keys in the designing of secure Electronic Auction scheme.These problems must be resolved urgently.This paper gives a secure randomly sealed- bids auction scheme using Pseudo-Randomness generator and Bit commitment.This scheme can satisfy all the secure requirement of sealed-bid auction stated such as bidder anonymity,bld secrecy,bidder default,verification,and has the advantages of simple technique,small cost of communication,randomly bid,forced-reveal,etc.