摘要： 针对IMS媒体层安全保护机制存在的问题，提出一个面向用户的IMS媒体层统一安全框架，在此基础上设计了具体的实现方案，该方案能为用户提供灵活的媒体层安全保护机制，实现媒体层加密算法与密钥的安全协商，保证用户之间端到端的通信安全。实验结果证明了该方案的有效性。

关键词: 统一安全框架, 媒体层安全, 认证, 算法协商

Abstract: Aiming at the problems existed in security protection mechanism of IMS media level, a user-oriented uniform security frame in IMS media level is presented. The design scheme is given in detail, which provides users with security protection mechanism of media level flexibly. The security negotiation between encryption algorithm and the key at media level is implemented, and the communication security between users with end to end is guaranteed. Experimental results show this scheme is effective.

Key words: uniform security frame, security of media level, authentication, negotiation of algorithm

中图分类号: 

• TP311.12