DPA (Differential Power Analysis) security evaluation and countercheck method and device

Abstract

The invention relates to the field of crypto chip security and particularly relates to a DPA (Differential Power Analysis) security evaluation and countercheck method and device. In the invention, a set of automated platforms, which is suitable to multiple angles and multiple layers and integrates the functions of power-consumption sampling, leakage analysis, evaluation and countercheck, is fitted by adding a novel DPA analysis method and a countercheck method on the basis of a plurality of layers of chip development tools, power-consumption testing tools, various power-consumption leakage analysis model and the like, and the automated platform can be used for assisting chip designers to objectively and reasonably analyze and evaluate a power-consumption resistant capability in a convenient and transparent manner as much as possible. Accordingly, the DPA security evaluation and countercheck method and device disclosed by the invention have the following advantages that: 1, by adding and introducing a novel polar DPA and reverse attack analysis method in the platform, the circuit can be evaluated more reasonably; and 2, by adding a novel KANO countercheck method in the platform, a new countercheck manner is provided for a user.

Description

technical field [0001] This patent relates to the security field of cryptographic chips, in particular to a DPA security evaluation and countermeasure method and its device. [0002] Background technique [0003] Side Channel Attack (Side Channel Attack) is an analysis method that relies on physical information such as power consumption, time, and electromagnetic radiation leaked during the encryption process to crack the key. [0004] DPA (Differential Power Analysis) attack is a type of side-channel attack (SCA), which uses the relationship between power consumption, running instructions, and data being executed to attack the key. DPA attacks use a digital oscilloscope to measure the circuit board, record several power consumption curves while encrypting a large amount of random plaintext data, and divide the curve groups according to a certain bit. Correct division will result in a peak on the differential power consumption curve, thereby obtaining the key and successfu...

AI Technical Summary

Problems solved by technology

[0007] Due to the existence of side-channel attacks, it is difficult to guarantee the security of the chip, so the chip designer needs to make a reasonable evaluation of the security of the chip

Images