Security analysis method and system for encryption equipment with mask combination circuit

Abstract

The invention provides a security analysis method and system for encryption equipment with a mask combination circuit. A cross-correlation analysis result between an overturning counting model and anactual measurement power consumption curve of encryption equipment is calculated; an optimized flip count model is determined, and finally, the safety performance of the encryption equipment is testedby utilizing the optimized flip counting model, so that the influence caused by the difference between the reverse annotation information obtained by simulation and the real delay in the actual circuit is eliminated, the simulation precision is improved, and the effectiveness of the flip counting model applied to the safety analysis of the encryption equipment is further improved. Meanwhile, theoptimization scheme only needs to combine with an actual measurement power consumption curve to correct the delay information in the standard delay format file so as to achieve the purpose of model optimization, and the method is simple and efficient.

Description

technical field [0001] The present application relates to the field of security analysis of encryption equipment, and more specifically, relates to a security analysis method, system, electronic equipment and storage medium for encryption equipment with mask combination circuits. Background technique [0002] Side-channel analysis is one of the most threatening analysis methods in the field of cryptanalysis, and masking is an anti-side-channel protection scheme at the algorithm level. By randomizing the intermediate value, the physical power consumption is blocked from the actual Correlation of intermediate values ​​in cryptographic algorithms. However, even if a masking scheme is provably secure, there will still be security flaws in the implementation. [0003] Existing analysis methods for masked combinational circuits are mainly divided into two categories. The first type of method analyzes the glitches generated in the circuit to obtain leaked information. The glitch i...

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Problems solved by technology

[0005] In order to solve the current problem that the accuracy of the simulation is low due to the difference between the reverse annotation information obtained by the simulation and the real delay in the actual circuit, which seriously affects the validity of the flip counting model, the present invention provides a method for Security analysis method, system, electronic equipment and storage medium of circuit encryption equipment

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