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.
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references
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