数字签名技术在解决密钥泄露方面的发展

密钥泄露对数字签名的危害越来越成为人们关注的焦点，该问题很难找到完全彻底的解决办法，只能尽可能减少其危害。对此专家和学者提出了很多新的数字签名机制，这里详细介绍了其中的一些，并指出它们各自的优缺点。针对在SiBIR数字签名机制中由于网络拥塞或攻击者的恶意拦截使得更新信息丢失造成signer和home base不能保持同步的问题，我们提出了超时同步机制。

The Development of the Technology of Digital Signature on Solving Key Exposure Problem

The damage of key - exposure has become the focus of the research. This problem may hardly be resolved complementally, what we can do is to minimizing the damage as we can. Many different approaches have been proposed and implemented to tackle this problem. In this article we introduce some of them and figure out the strength and the shortcoming of them. In SiBIR signature scheme, due to network congestion or active attack from an adversary, a single refresh message will be lost which makes signer and home base losing synchronization. To counter this problem we propose a timeout synchronization scheme.