Design and Realization of Differential Power Analysis for DES
The paper introduces Differential Power Analysis(DPA) attack of the decrypt encrypted circuits with DES is one particularly powerful type of Side Channel Attacks(SCA).All its theories are based upon the physical characters,power consumption models and data-dependent power consumption of CMOS logic gates which form the integrated circuits(ICs).The paper introduces the design and realization of DPA attacks for encrypted systems with DES against a concrete circuit.In experiments,48-bit key in the 56-bit effective key of DES encryption algorithm is detected successfully.It comes gradually and closely into ultimate target of the attack.The result indicates that DES encrypted systems without some extra protective measures can't resist the attacks of DPA,because of the leakages from the physical signals and the difference of power consumption while processing the different data of ICs.