Masking scheme against correlation power analysis on DES

With the situation that side channel attack poses a serious threat to the security of cryptographic devices, we propose a new scheme of pipelined "asymmetric masking technology" against correlation power analysis and implement it in DES algorithm. Through pipelined operation, different random masks are introduced in each round of the encryption process, so that the correlation between power consumption and processing data is disturbed and we can resist correlation power analysis. Through power simulation, we collected the standard DES, symmetric mask scheme and the power simulation curve corresponding to the proposed protection scheme, and conducted related power consumption attacks. The experimental results show that the standard DES requires 1000 power consumption curves, and the symmetric mask scheme requires 4000 power consumption curves to successfully attack. The protection scheme proposed in this paper requires 50, 000 curves to successfully attack, and the protection capability is improved by more than 10 times. We can say that scheme can achieve great protection.