【摘要】 SIP协议是NGN(Next Generation Network)中的重要协议之一。在SIP网络中,由于设备的差异性和网络环境的复杂性,即不同的设备支持不同的安全协议,不同的网络环境要求采用不同的安全协议,单一地指定某种安全协议使系统缺乏应有的灵活性,也降低了系统的可靠性。提出了一种新的安全协商机制用于在SIP实体之间进行安全协议的选择,并给出了相应的安全性分析。更多还原

【Abstract】 SIP protocol is one of the important protocols in next generation network. In SIP network, due to the different devices and complicated network environment, that is to say, different devices support different protocols; different network environment requires different security protocols, specifying some definite security protocol makes the system lack of flexibility and reliability. A new negotiation mechanism for the selection of security protocols among SIP entities was put forward, and moreover the corresponding security analysis was provided.更多还原