H.323协议安全特性的研究

Study of Security Features of H.323 Protocol

为了在H.323系统中确保多媒体通信的安全性,需要在H.323框架内使用ITU T的H.235建议所提供的身份认证、完整性检查和保密性等服务。本文首先描述H.235建议的主要功能,并分析其第三版中提供的新特性,然后提出了一个分层的H.235实现方案,最后介绍H.235建议目前真正的实现状况。

In order to ensure the security of multimedia communication of H.323 system,Recommendation H.235,produced by ITU-T,should be used within the framework of the H.323 to incorporate security services such as authentication,integrity and privacy.The paper first describes the main functions of Recommendation H.235 in the H.323 framework,and analyses some new features of H.235 version 3.Then layered implementation architecture of Recommendation H.235 is proposed.In the end,the real world of H.235 implementation is introduced.