基于群签名的安全电子拍卖方案

针对双线性映射的群签名方案问题,为提高拍卖效率及安全性,提出了一个新的基于群签名的安全电子拍卖方案。以双线性映射为工具,引入矢量空间秘密共享技术和阈下通道技术。采用矢量空间秘密共享机制保证投标者对所投价位的匿名性;通过阈下通道实现确认中标者的打开过程。分析表明方案在相同安全性的要求下,签名的公钥长度是独立的,且签名长度较短,适合于分布式大规模的网上拍卖,实验证明是一个安全有效的电子拍卖方案。

A Secure Electronic Auction Scheme Based on Group Signature

The paper studies the group signature based on bilinear pairing,and a new secure electronic auction scheme is designed based on the group signature.The scheme is based on bilinear pairing with vector space secret sharing and subliminal channel.It uses vector space secret sharing mechanism to ensure the anonymity of the bidder,and the open process to confirm bidder is realized by subliminal channel.Analyses show that under the same security conditions,the length of public key in the scheme is independent and...