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计算机系统应用英文版:2011,20(8):67-71

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具有一跳前向安全性的X2切换密钥更新协议

李泰成¹, 何莉¹, 吴槟^2,3

(1.中国科学院研究生院信息安全国家重点实验室,北京 100049;2.中国科学院软件研究所信息安全国家重点实验室,北京 100190;3.信息安全共性技术国家工程研究中心,北京 100190)

Key Refresh During Cell Handover in LTE Featuring One-Hop Forward Security

LI Tai-Cheng¹, HE Li¹, WU Bin^2,3

(1.State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;2.State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China;3.National Engineering and Research Centre of Information Security, Beijing 100190, China)

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本文已被：浏览 2145次下载 5444次
Received:November 14, 2010 Revised:November 25, 2010

中文摘要: 长期演进系统LTE是下一代移动通信系统的主要标准之一,其安全性对于系统的成功部署至关重要.研究LTE中本地信号切换也即X2切换时的密钥管理,并关注当前方案仅具备两跳前向安全性这一缺陷.我们提出一个改进的密钥更新方案,以达到更强的一跳前向安全性.新方案弥补了上述安全缺陷,且在不增加通信开销的情况下,最大限度地保留了现有的密钥材料及参数形式,因而当前标准可顺利升级到改进方案.

中文关键词: 长期演进系统网络安全 X2切换密钥更新一跳前向安全性

Abstract:Long Term Evolution (LTE) is the next-generation mobile communication system beyond 3G, whose security is predominant for the successful deployment of such networks. In this paper, we address the cryptographic key management during local cell handovers known as X2 handovers in LTE, which currently only achieves two-hop forward security. An enhanced key refresh scheme is proposed, which features the desired one-hop forward security. Our proposal not only makes up for the deficiency in the standardized LTE technical specification, but also retains all existent key materials and parameters without incurring extra communication costs. Therefore, it is technically feasible for the standardized key refresh to be smoothly upgraded to the enhanced proposal.

keywords: LTE network security X2 handover key refresh one-hop forward security

文章编号： 中图分类号： 文献标志码：

基金项目:中国科学院知识创新工程重要方向项目(YYYJ-1013)

Author Name	Affiliation
LI Tai-Cheng	State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
HE Li	State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
WU Bin	State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China National Engineering and Research Centre of Information Security, Beijing 100190, China

Author Name	Affiliation
LI Tai-Cheng	State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
HE Li	State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
WU Bin	State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China National Engineering and Research Centre of Information Security, Beijing 100190, China

引用文本：
李泰成,何莉,吴槟.具有一跳前向安全性的X2切换密钥更新协议.计算机系统应用,2011,20(8):67-71
LI Tai-Cheng,HE Li,WU Bin.Key Refresh During Cell Handover in LTE Featuring One-Hop Forward Security.COMPUTER SYSTEMS APPLICATIONS,2011,20(8):67-71