通用可组合的自更新Hash链认证模型

Universally composable self-updating hash chain authentication model

利用通用可组合安全的框架定义了自更新Hash链认证理想函数,设计了基于一次签名理想函数的真实协议,并证明了在安全伪随机函数和单向无碰撞Hash函数的前提下,该协议能够实现所提理想函数。

An ideal function of self-updating Hash chain authentication was proposed by using the framework of universal composable.A real protocol based on one time signature ideal function was designed.It proved that the protocol can realize the ideal function with secure pseudorandom function and cryptographic secure Hash function.