Algorithm of encrypted chip with anti-attack advanced encryption standard

Abstract

The invention discloses an arithmetic of encryption chips preventing attacking advanced encryption standards, which relates to the technology field of information security. The mechanism of the arithmetic is that the intermediate data to be used by DPA are covered through exclusive or operation of input initial data and one random number; the key of the Masking lies in that all the data in the middle are revised by the data can be finally restored and output. Therefore, the design needs two data channels, one is used for normal encryption processing of necessary revised encrypted data and the other is used for processing of random number to restore and output real data in the two channels by simple exclusive-or at last. The invention has the characteristics of relative safety, easy realization, no statistic analysis rules and final restoration of output data.

Description

technical field [0001] The invention relates to information security technology, in particular to an algorithm technology for an anti-attack advanced encryption standard AES encryption chip. Background technique [0002] With the development of integrated circuit analysis technology, the security of chips, especially security chips themselves, is increasingly threatened. How to effectively protect the integrity, confidentiality and validity of important or sensitive data in security chips is related to the national economic, political, cultural and military aspects. Due to the particularity of the security chip, the country generally cannot obtain the internationally advanced security chip and its related technologies, of course, including the defense attack and analysis technology for the security chip. In order to enhance the security of the national security chip itself, it is very important to independently research high-performance algorithms and new circuit structures...

AI Technical Summary

Problems solved by technology

Use the noise generator to generate random noise and add it to the signal terminal that may be attacked to reduce the signal-to-noise ratio of power analysis, thus making the attack method of power analysis more difficult

However, there are some defects in this method, and the attacker can complete the attack on the hardware through more sampling and signal processing.

Due to its advantages in average power consumption, peak energy signal, and electromagnetic radiation, asynchronous circuits also play a role in resisting power consumption analysis, but because asynchronous circuits themselves are not widely used in chip design, related design software It is not very complete, which brings a lot of trouble to the application of asynchronous circuits in security chips

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