CAJ | 학술논문

为探究电磁信号泄漏的秘密信息,将多比特差分电磁分析(M-DEMA)应用于密码芯片的电磁旁路攻击.在分析CMOS电路直接电磁辐射机理的基础上,设计并搭建了DES微控制器(AT89C52)密码系统的近场电磁辐射信号采集与分析平台.在详细阐释 M-DEMA 攻击方法的同时,完成了针对该密码系统的攻击实验及实验效果分析,实验结果表明该方法是有效的,与传统 DEMA 方法相比,该方法能用更少的样本成功恢复 DES 密码芯片的密钥,并能提高攻击成功率.
위탐구전자신호설루적비밀신식,장다비특차분전자분석(M-DEMA)응용우밀마심편적전자방로공격.재분석CMOS전로직접전자복사궤리적기출상,설계병탑건료DES미공제기(AT89C52)밀마계통적근장전자복사신호채집여분석평태.재상세천석 M-DEMA 공격방법적동시,완성료침대해밀마계통적공격실험급실험효과분석,실험결과표명해방법시유효적,여전통 DEMA 방법상비,해방법능용경소적양본성공회복 DES 밀마심편적밀약,병능제고공격성공솔.
In order to research for secret information leakage by electromagnetic signal, use multiple-bit differential electromagnetic analysis (M-DEMA) is applied to side channel attacks (SCA) in code chip. Based on analysis the principle of direct electromagnetic radiations for complementary metal-oxide-semiconductor (CMOS) circuit. A near-field electromagnetism radiations signals acquisition and analysis platform of DES microcontroller (AT89C52) code system is designed and constructed. Introduce M-DEMA attack method in detail, realize the attack test and test results analysis. The experimental results show that the method is effective, compared with conventional DEMA method, this method can use less traces successfully extract the secret key of DES cryptographic device, and can improve the success rate of attacks.