在网络节点可信的安全假设下，提出一种面向用户的网络层安全通信模型。
This paper introduces a user-oriented secure communication model implemented in network layer for two trusted network nodes.
该安全通信模型在对安全要求较高的WEB服务应用中能达到较好的效果。
The module can be applied in the WEB service applications that requires higher security guarantee.
WEB服务安全通信模型能够满足安全通信的基本要求，并且能够较为高效地抵御重传攻击。
The WEB service secure communication model can satisfy the basic requirements of secure communication, and performs replay attack resistance efficiently.
针对基于SSL的安全通信模型中ssl握手协议部分在访问控制方面的缺陷，本文提出了一个基于pmi的全解决方案，并对改进设计进行了分析和BAN逻辑证明。
As for the flaws of the SSL handshake protocol part in the SSL based security communication model, the thesis proposes a PMI based solution and analyzes the design by using the BAN logic.
由于此协议是在信息论通信模型下，所以协议是无条件安全的。
Since the presented protocol is based on information theoretic model, it is unconditionally secure.
从水印的通信模型建立，水印的相关检测模型，到信息隐藏容量分析，隐写术的安全性理论，详细介绍了水印的相关理论；
Theories related to watermark are introduced in detail, including communication model, related detection model, hiding information capacity analysis and security of steganography.
因此，本课程讲述了CSCW的群组通信原理，讨论点对多点和多点对多点通信模型下的路由问题、可靠传输问题和安全问题。
This course introduces the theory of group communication of CSCW. We discuss the route, reliable transfer and security problems under point-to-multipoint, multipoint-to-multipoint communication.
因此，本课程讲述了CSCW的群组通信原理，讨论点对多点和多点对多点通信模型下的路由问题、可靠传输问题和安全问题。
This course introduces the theory of group communication of CSCW. We discuss the route, reliable transfer and security problems under point-to-multipoint, multipoint-to-multipoint communication.
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