摘要
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。
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 the length of the signature is much shorter than other one constructed by other measure. Furthermore, the scheme is suitable for large scale distributed aution. So this scheme is secure and efficient secret sharing scheme.
出处
《计算机仿真》
CSCD
北大核心
2010年第5期297-300,共4页
Computer Simulation
基金
江西省南昌市科技课题经费支柱项目
关键词
电子拍卖
群签名
双线性映射
矢量空间秘密共享
阈下通道
electronic auction
group signature
bilinear pairing
vector space secret sharing
subliminal channel
