基于Hash链的流式数据签名与验证研究

Research on Streamed Data Authentication and Signature Based on Hash Chains

针对流式数据实时性要求和传输中易丢包的特点,重点分析了Golle增强链流式数据签名方案,基于Gilbert Elliot网络通道模型,提出了Hash值前置的星 链型流式数据签名验证方案。该方案在发送方预先缓存流序列,可灵活地构建签名链;新方案比Golle增强链方案节省资源,扩大了接收范围,杜绝了拒绝服务攻击,降低了断链损失。

Analyses the Golles augment chain scheme, aiming at the stream characteristics that stream must be transmitted in real time and processed even if some packets in the sequence are missing. Based on Gilbert Elliot channel model, proposes a new star chains stream authentication scheme in which Hash is forward placed.This scheme stores a sequence before signing it, in order to construct a Hash chain flexibly.The new scheme uses less resources and is easier for users to receive the stream, at the same time it prevents denial of service attack and reduces the loss of chains break.