A NEW FORWARD-SECURE THRESHOLD PROXY RE-SIGNATURE SCHEME
A forward-secure threshold proxy re-signature scheme in the standard model is firstly proposed in this paper. The scheme has the property that it is infeasible to forge valid proxy re-signatures relating to the past even if more than or equal to the threshold proxies are corrupted. Re-signature keys are updated at regular periods of time. It implies that past proxy re-signatures remain secure if the current re-signature key is leaked. The scheme is provably robust, forward–secure and unforgettable without relying on the random oracle model. The scheme has many attractive applications, such as the construction of the interoperable system of digital rights management (DRM).
Forward-secure threshold prozy resignature Standard model DRM
Xiaodong Yang Caifen Wang Yulei Zhang Weiyi Wei
College of Mathematics and Information Science, Northwest Normal University, Lanzhou 730070, China
国际会议
北京
英文
566-569
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）