密钥建立是通信网络安全中的关键问题。
Key establishment is the central problem in communication and network security.
公开密钥基础设施(PKI)是解决网络安全的技术。
Public key infrastructure (PKI) is one of the important techniques for solving network security problem.
CA证书管理是PK I网络安全体系实施的关键，它涉及到密钥和证书从创建到撤销的整个过程。
Ca certification management is the key of PKI actualization. It includes all process from initialization to cancellation of the key and certification.
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