具有易追踪性的无可信中心门限签名方案

Traceable threshold signature scheme without trusted center

对如何构造高效、抗攻击的签名给出了一些启发式的思想,并针对一些特殊的网络(如Ad Hoc网络)提出了一种新的签名方案。新方案无需可信中心派发密钥,解决了以往方案中权力过分集中的问题;以双线性对为构造工具,密钥长度短,签名效率高;可追踪性保证了方案在受到攻击时的可追查性。同时,经分析,该方案具有很好的强壮性和不可伪造性。

This paper gives some heuristic thinking on how to construct highly efficient and attack-resist scheme. It also puts forward a new plan for some special network like ad hoc. The new scheme has solved the problem that the old schemes depend on the trusted party excessively because it is unnecessary to have a credible center to distribute keys. The bilinear pairing construction tool also makes the signature length and key length shorter than others. In addition, the new plan can be proved to have a very simple and effective traceability. Meanwhile, the scheme can be verified to have strong robustness and unforgeability.