CAJ | 학술논문

利用物理观测效应进行的旁路攻击,是通过对密码设备工作时泄漏的时间、功耗等信息的分析,获取密码系统的密钥或相关秘密信息.已有大量防护对策但并没有从根本上阻止攻击.本文在AT89C52上加载了DES算法,并在该平台上对差分功耗旁路攻击与防护方法进行了实验和验证.根据Micah和Reyzin建立的物理观测密码术理论模型,将该模型具体化,对可以抵抗黑盒攻击的密码要素进行修正以抵抗基于物理泄漏的旁路攻击,将RO(random ora-cle)模型用于物理观测现实世界的安全性证明,给出了对称加密方案物理可观测下安全性定义,并对DES定义了在DPA攻击下的安全性.
이용물리관측효응진행적방로공격,시통과대밀마설비공작시설루적시간、공모등신식적분석,획취밀마계통적밀약혹상관비밀신식.이유대량방호대책단병몰유종근본상조지공격.본문재AT89C52상가재료DES산법,병재해평태상대차분공모방로공격여방호방법진행료실험화험증.근거Micah화Reyzin건립적물리관측밀마술이론모형,장해모형구체화,대가이저항흑합공격적밀마요소진행수정이저항기우물리설루적방로공격,장RO(random ora-cle)모형용우물리관측현실세계적안전성증명,급출료대칭가밀방안물리가관측하안전성정의,병대DES정의료재DPA공격하적안전성.
The security of cryptographic implementations with respect to "physical observation attacks" named side-channel attacks, in which adversaries are enhanced with the possibility to exploit physical leakages such as power consumption or electromagnetic radiation. A lot of countermeasures have been experimented,but do not fundamentally prevent them. In this paper,DES is implemented on AT89C52. DPA and countermeasure experiments have been done on this platform. Physically Observable cryptography is built by Micali and Reyzin who initiated a theoretical analysis of side-channels. Our work is to apply the "Physical-Observation" attacks to practice for Symmetric Encryption schemes and find out how it is applied to DES-DPA attack practice for Symmetric Encryption schemes with random oracle model.