托管加密标准EES分析和修改方案

Analysis and Modified Scheme ofthe Escrowed Encryption Standard(EES)

文章首先从个人和监听机构双方需要及合理性出发。总结了密钥托管系统应该满足的基本要求,并据此对美国托管加密标准EES以及最近He和Daw-son提出的EES修改方案进行了分析,指出了缺点,并提出了进一步完善的解决方案。

This paper includes requirement of key escrow system, by which we analyse the Escrowed Encryption Standard(EES)[1] and He and Dawson's scheme[2], point out their weakness, and propose a modified method.