基于双曲线映射签名的高效可分电子现金系统

EFFICIENT DIVISIBLE E-CASH SYSTEM BASED ON HYPERBOLIC MAPPING SIGNATURE

基于双曲线映射的签名设计了一种新型可分电子现金方案,方案中有效地加入了压缩支付和批处理支付,计算时间复杂度较小,从而使得系统的整体效率较高。另外,方案中无需可信第三方(TTP)的参与,因而系统的整体开销较小。方案的安全性基于q-SDK假设、计算离散对数困难性假设以及单向散列函数存在性假设。

This paper proposes a novel divisible E-cash scheme based on hyperbolic mapping signature.The compact payment and batch processing payment are effectively added into the scheme,so that its complexity of computation time is low,and the entire efficiency of the system is high.Moreover,it reduces the whole cost of the system by excluding TTP（Trusted Third Person）.The security of the scheme is based on the q-SDK assumption,the hardness assumption of calculating discrete logarithm and the existence assumption of one-way hash function.