Protocol analysis module, asynchronous encryption and SADB realized are discussed in the system of virtual private network.

本文主要讨论了在虚拟专用网络系统中协议分析模块、异步加密模式和SADB的实现。

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The paper prominently designed and implemented the PF_KEY V2 protocol, which mainly provides the communication interface between IKE and SADB.

重点设计并实现了PF_KEY V2协议，该协议主要负责提供IKE与内核安全数据库进行通信的接口。

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