在线式攻击的芯片防御技术  

Defensive techniques to on-board attack on chips

作　　者：朱元华[1] 李清宝[1] 肖达[1] 

机构地区：[1]郑州信息科技学院,河南郑州450002

出　　处：《计算机工程与设计》2008年第20期5171-5173,5176,共4页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2006AA01Z404)

摘　　要：针对在线式攻击给芯片安全带来的威胁,分析了在线式攻击主要过程和基本特点,提出了在增加在线采集全部工作数据难度,增加芯片接口属性判别难度,增加输入数据和输出数据内在关系分析难度3个大的方面来增强芯片的安全。并从芯片设计的角度,在数据采集、接口属性判别和输入数据输出数据关系分析3个方面介绍了一些有效的防范技术。主要介绍了输入数据随机化技术、双向接口技术、信息隐藏技术、状态机和信息隐藏结合技术等。Aiming at the threat from on-board attacks to chips, the major courses and basic characters are analyzed and three aspects are brought out which are increasing the difficulties ofthe collecting of the full data, increasing the difficulties of pin type identifying and increasing the difficulties of analyzing the relationships between the input data and output data. From the point of view of the design of chips, some defensive techniques are introduced in the aspects of collecting data, pin type identifying and analyzing the data of chips. Some techniques are particularly iuustrated such as technique of randomization of input data. technique of two-direction pins, technique of information hiding, technique of the combination of FSM and information hiding, and so on.

关 键 词：安全芯片 在线式攻击 信息隐藏 有限状态机 逻辑分析仪 

分 类 号：TP309.1[自动化与计算机技术—计算机系统结构]