一种基于软硬结合加密的VPN系统结构的研究与实现

随着网络技术的飞速发展和网络基础设施的建设，网络安全设备VPN在网络通信过程中扮演着越来越重要的作用。但是，传统的软件加密已不能满足高速的网络对系统性能的要求，所以本文提出了一种将软件加密和多个硬件加密卡相结合的新的并行系统结构，并对VPN数据包在多个加密单元之间的调度算法进行了研究，最后给出了系统的测试性
能和分析结果。

Research and Implementation of a VPN Architecture Based on the Combination of Software and Hardware Encryption

With the rapid development of network techonology and infrastructure, the network security device VPN plays a more and more important role in network communications. However, the traditional techonology using software encryption can not match the high-speed network any longer. Thus a new parallel architecture which combines soft-encryption and encrypt-cards is proposed. In this paper we also discuss the scheduling algorithm of the VPN packets among the encryption units. The performance of our system is presented and analysed finally.