分组密码Cache攻击技术研究

Cache Attacks on Block Ciphers

近年来,Cache攻击已成为微处理器上分组密码实现的最大安全威胁,相关研究是密码旁路攻击的热点问题.对分组密码Cache攻击进行了综述.阐述了Cache工作原理及Cache命中与失效旁路信息差异,分析了分组密码查表Cache访问特征及泄露信息,从攻击模型、分析方法、研究进展3个方面评述了典型的分组密码Cache攻击技术,并对Cache攻击的发展特点进行了总结,最后指出了该领域研究存在的问题,展望了未来的研究方向.

In recent years,cache attack has become one of the most threatening attacks to block ciphers that implemented on microprocessors.The research in this area is a hot spot of cryptographic side channel attacks.This paper summarizes the cache attacks on block ciphers.The mechanism of cache and the side channel information difference of cache hit miss are described.The characteristics of cache accesses and corresponding information leakages are analyzed.Several typical cache attack techniques on block ciphers are well discussed from the aspects of attack model,analysis method,research progress.Finally,the features of cache attacks are summarized,the current research pitfalls are provided,and the future directions of cache attacks are given.