Aided Design Methods for Power Analysis Resistant Implementation of Cryptographic Device
Hongyi Lu · Journal of Wuhan University · 2008
According to the identified vulnerabilities to power analysis attacks in the implementation of cryptographic device,method of quantitative evaluation of the resistibility to power analysis is proposed.So it is feasible to validate and improve the practical design during the design process.The number of power samples required to perform an attack successfully is used to measure the resistibility to power analysis.The unified definition of signal noise ratio of different power analysis attacks is proposed.To compute the signal noise ratio,the algorithm to evaluate the probability distribution of transient power consumption is presented.Based on the signal noise ratio,the number of power samples required is evaluated.Combined with the identification of vulnerabilities and quantitative evaluation,a DES coprocessor is implemented.The experiment result shows that the proposed aided design method is truly practicable.