CAJ | 학술논문

自1999年Kocher等人提出针对智能卡中DES的差分功耗攻击（DPA）以来，针对DPA的各种防御策略也被大量的提出，Masking就是其中一种简单、高效的方法。文献［2］中Akkar提出了一种改进的Masking方法，然而，本文基于实际的智能卡芯片对该方法成功进行了攻击试验。实验结果表明该方法并不能抵抗DPA的攻击。以此类推，文献［7］中提出的仅对密钥K进行掩码的方法亦不能抵抗DPA的攻击。
자1999년Kocher등인제출침대지능잡중DES적차분공모공격（DPA）이래，침대DPA적각충방어책략야피대량적제출，Masking취시기중일충간단、고효적방법。문헌［2］중Akkar제출료일충개진적Masking방법，연이，본문기우실제적지능잡심편대해방법성공진행료공격시험。실험결과표명해방법병불능저항DPA적공격。이차유추，문헌［7］중제출적부대밀약K진행엄마적방법역불능저항DPA적공격。
Since Differential Power Analysis （DPA） on DES in smartcards was firstly published by Kocher et al. in 1999, many countermeasures have been proposed to protect cryptographic algorithms from the attack, of which masking is an efficient and easily implemented method. In [2], Akkar and Giraud introduced the transformed masking method, an alternative countermeasure to the DPA. However, in this paper, authors conducted a successful Differential Power Analysis DPA attacks on a Triple Data Encryption Standard TDES hardware implementation on smartcard. The experiment resuits prove that the transformed masking method is not sufficiently to resist the attack of DPA and the same, the DES implementation of masking on key in [7] will also be vulnerable to the corresponding attacks above.