DPA Attacks on Transformed Masking Method
LI Qi-rui, Cec Huada · Journal of Beijing Electronic Science and Technology Institute · 2011
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 results 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.