lte安全机制

过程等；

再者，

指出了现阶段

< br>LTE/SAE

安全体制存在的一些问题并进行了分析；

最后对文献

阅读方面做了总结。

关键 词：

3GPP

；

LTE/SAE

；安全机制；密钥；鉴权

The Security Mechanism of LTE/SAE

Abstract

:

The

LTE/SAE

security

mechanism

architecture

is

studied

through

the

standard

of

LTE/SAE put forward by 3GPP. Firstly, the basic network structure of LTE/SAE is summarized

and

the

advantage

of

LTE/SAE

to

UMTS

is

introduced.

Secondly,

the

network

security

mechanism of LTE/SAE, security structure, the analysis of security procedure, authentication and

key agreement, key hierarchy, security mode activation procedure, and so on, is introduced step by

step. And then, some problems existing in the present security mechanism of LTE/SAE are shown

and analyzed. At last, some summary is given on paper reading.

Keywords

:

3GPP

(3rd

Generation

Partnership

Project);

LTE/SAE

(long

time

evolution/system

architecture evolution); Security Mechanism; Key; Authentication

1.

引言

1.1

LTE

发展背景

伴随

GSM

等移动网络在过去的二十年中的广泛普及，全球 语音通信业务获得了巨大的

成功。目前，全球的移动语音用户已超过了

< br>18

亿。同时，我们的通信习惯也从以往的点到

点（

Place to Place

）演进到人与人。

个人通 信的迅猛发展极大地促使了个人通信设备的微型化和多样化，结合多媒体消息、

在线游戏 、

视频点播、

音乐下载和移动电视等数据业务的能力，