会议论文

Countermeasure of Power analysis Attacks on Cryptographic Chips

中文

2014

1-9

2014全国第十二届嵌入式系统学术会议

2014全国第十二届嵌入式系统学术会议论文集

2014-09-21

长沙

中国计算机学会

本校为第一机构

功耗攻击是密码芯片一种新的密钥破解方法,它对密码芯片的安全造成了较大威胁.对密码芯片运行时中间变量的功耗信息泄漏,从系统层次提出了五级功耗信息泄漏模型,在此基础上,以密码芯片进行密钥运算时产生的中间变量与密钥有关,提出了基于中间变量的攻击树模型,并对模型进行了算法实现,提出了相应的功耗攻击形式化理论,最后以DES算法密码芯片为例实施了功耗攻击,通过理论分析与实验验证所提方法的有效性.本文主要试图在密码芯片的功耗攻击理论与模型两个方面进行探索性创新,形成一套功耗攻击相应的理论与系统模型,也给密码芯片的功耗攻击防护提供有价值的参考.

　　Power analysis attack is a new method of gaining key.It is a greater threat to cryptographic chips.Five-level model was proposed to infonnation leakage ofpower consumption among the variables of cryptographic chips.On the basis,the attack tree model of middle variables was proposed because the intennediate variables are associated with the key,and the Corresponding algorithm was implemented for the model,the corresponding theory of power analysis attacks is proposed.Finally,the effectiveness of the proposed method is proved through theoreti...