CAJ | 학술논문

为在充斥电磁分析旁路攻击敌手的危险环境下评估密码设备的安全性,通过将密码学标准黑盒模型中的敌手能力进行加强,在物理可观测密码术模型的框架内,定义了具有电磁泄漏信息分析能力的密钥恢复敌手与不可分辨性判定敌手.分别以敌手成功率定量度量与敌手优势定性度量,给出密码设备面向实际的安全性度量方式.通过成功率度量方式的实验,比较了几种不同电磁旁路分辨器的攻击能力,以便为进一步研究并开发可证明抵抗电磁分析攻击的密码系统和设备打下基础.
위재충척전자분석방로공격활수적위험배경하평고밀마설비적안전성,통과장밀마학표준흑합모형중적활수능력진행가강,재물리가관측밀마술모형적광가내,정의료구유전자설루신식분석능력적밀약회복활수여불가분변성판정활수.분별이활수성공솔정량도량여활수우세정성도량,급출밀마설비면향실제적안전성도량방식.통과성공솔도량방식적실험,비교료궤충불동전자방로분변기적공격능력,이편위진일보연구병개발가증명저항전자분석공격적밀마계통화설비타하기출.
For evaluating the security of cryptographic device in the risk environment full of electromagnetic analysis (EMA) adversaries, by enhancing the adversary's ability in the classical cryptographic black box model, two novel adversaries, the key recover adversary and the indistinguishability determined adversary who takes the advantage of electromagnetic emissions, were defined within the framework of physical observable cryptography model. For the former, the security is evaluated in quantity with the adversary's success ratio, and for the latter, the security is evaluated in quality with the adversary's advantage. With the metric of adversary's success ratio, the attack abilities of several EMA distinguishers were compared. These two practice-oriented security metrics laid the foundations of further researching and developing EMA resistant cryptographic system and device.