在论文期间，作者参与了一个证书管理系统的设计及实现。

During the period of study, we have constructed a system of certificate management according to the related standards.

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本论文研究了用于建立网络身份鉴别所需要的证书管理系统。

In this thesis, we study the certificate management system which aims to build network identity authentication systems.

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本系统的核心功能是对证书生命周期的管理，所以也将其称为公钥证书管理系统。

The key function of this system is management of certificate lifecycle, so also call it public key certificate management system.

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