Differential power attack testing method for DES (data encryption standard) algorithm circuit

Abstract

The invention discloses a differential power attack testing method for a DES algorithm circuit. A DES algorithm is a widely-applied grouping symmetric encryption algorithm. According to the method, a differential power attack test is performed on the DES algorithm circuit at a design stage, and the method comprises the steps as follows: (1), functional simulation and acquisition of a power consumption sample; (2), preprocessing of the power consumption sample; (3), acquisition of a hypothetical power consumption sample; and (4) calculation of correlation coefficients and analysis of attack results. According to the differential power attack testing method, only varying power consumption points are sampled, a large number of power consumption sample data are saved, the power attack calculation amount is reduced substantially, the method has the advantages of high evaluation efficiency and high speed, and above all, the power attack test can be performed at the circuit design stage, so that the anti-attack capability of a password circuit is evaluated in advance, and the redesign risk of the DES circuit after assembly line production of chips is reduced.

Description

technical field [0001] The invention relates to the field of information security of integrated circuits, in particular to a differential power consumption attack test method of a DES cryptographic algorithm circuit. Background technique [0002] Entering the 21st century, with the rapid development of science and technology, social informatization has become the general trend, life has become informatized, digitized and networked, and people's dependence on information is constantly increasing. With the development of computer, network, communication technology and integrated circuit technology, security chips are widely used in various needs such as new generation IC (integrated circuit) bank cards, smart cards for access control systems in residential or corporate environments, and voice encryption chips in mobile phones. in an information security environment. Because the circuit structure inside the integrated circuit is very complex, and it has the characteristics of ...

AI Technical Summary

Problems solved by technology

Some scholars use the simulation attack method designed by mathematical modeling. Although the attack is efficient and the cost is low, its accuracy is very low, the reliability of the result is not high, and it is not suitable for verifying the anti-power analysis characteristics of the cryptographic algorithm circuit.

[0007] To sum up, in the prior art, the power consumption attack method for cryptographic algorithm circuits implemented by FPGA and ASIC has the defects of high cost, difficult implementation, and long verification cycle, and the simulation attack method designed by mathematical modeling method has low precision. , the defect of poor reliability

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