【摘要】 在 (部分 )密钥托管中 ,监听阶段是一个关键阶段 .因此 ,如何安全而有效地实施监听是一个重要的问题 .按照以前的监听方案 ,用户被监听后 ,他的整个私钥就暴露了 .这对于诚实守法的用户来说是不公平的 .该文提出部分密钥托管中的监听方案 .在这个方案下 ,即使用户被监听多次 ,其托管密钥也不会受到危害 .更多还原

【Abstract】 During (partial) key escrow, monitoring is a vital phase. So how to monitor a user safely and efficiently is a very important problem. According to the known monitoring schemes, after a user is monitored, his secret key is known. It is unfair to an honest user. In this paper, the authors propose a monitoring scheme of a typical partial key escrow scheme. In this scheme, the escrowed key of a user is not compromised even if the user has been monitored for many times.更多还原