一种应用于双重数字签名的电子拍卖方案

摘要

针对电子拍卖中存在的身份匿名性等安全问题,基于秘密分享思想,提出一种安全高效的电子拍卖方案.应用双重数字签名,保证投标过程中参与者之问的信息传输安全.投标者采用临时身份投标,标价不直接发送给其他参与者.拍卖服务器根据单调递增函数所计算出的投标值判断中标者,若与注册中心计算结果相符,则投标结果有效.安全性分析结果表明,该方案满足电子拍卖的各项安全性要求,且计算简便、运算效率高.%Aiming at the safety problems of identity anonymity in electronic auction, a safe and efficient scheme is designed based on secret sharing idea, which uses double digital signature to guarantee the safe information transfer among the parties. The bidder is covered by a temporary identity and the bid is send to others indirectly. The auction server can speculate the winner by arranging the figures calculated by a monotone increasing function. If the results from the auction server and the register manager are the same, the winner can be declared. Safety analysis result shows that the proposed scheme is not only secure but also simple and efficient.