摘要
在FI05群签名的基础上,提出了一个新的成员撤销方案。该方案是利用一个新的动态累加器来实现的。累加器的安全性是基于椭圆曲线离散对数问题,并已被证明。撤销一个成员和更新证据所花费的代价比以前的累加器更小,而且证明了新的群签名的安全性。
A new membership revocation method based on the FI05 group scheme is provided.The new scheme is implemented by a new dynamic accumulator.The security of the accumulator is based on the elliptic-curve discrete logarithm problem,and is proved.The cost of revoking a member and updating witness is smaller than the previous accumulators.The security of the new group signature scheme is proved.
出处
《计算机工程与应用》
CSCD
北大核心
2008年第24期136-138,共3页
Computer Engineering and Applications
关键词
群签名
动态累加器
成员撤销
group signature
dynamic accumulator
membership revocation
