两个密钥托管方案的比较分析

Comparison and analysis of the two key escrow schemes

对两个具有代表性的密钥托管方案[1-2]进行了系统地比较与分析,给出了文献[1]中结论的一个更为显式的证明;提出了改进两个方案的思路;最后总结出一个完善的、实用的密钥托管方案应具备的一些安全特性.

The two representative key escrow schemes [1-2] are compared and analyzed systematically. Then the conclusion given by the paper [1] is proved again in a more unambiguous way; After proposing a method to ameliorate the both mentioned above, the authors summarize some security requirements that a perfect and practical key escrow scheme should satisfy in the end.