Power attack prevention method oriented at AES algorithm and circuit achieving method thereof

Abstract

The invention provides a power attack prevention method oriented at an AES algorithm and a circuit achieving method of the power attack prevention method oriented at the AES algorithm. According to the basic principle, a control module and redundancy registers are added to an AES algorithm circuit. The AES algorithm selects the position of a register storing middle calculation data in each turn according to a zone bit generated by the control module, so that the middle data of each turn of encryption operation are alternatively stored in the different registers, the Hamming distance of the middle data of the AES algorithm is effectively hidden, and the AES algorithm can resist power analysis attacks based on a Hamming distance model. The power attack prevention method oriented at the AES algorithm and the circuit achieving method of the power attack prevention method oriented at the AES algorithm have the advantages of being high in flexibility, small in area cost, high in power attack resistance and the like, and provide a good resolution scheme for designing safe chips.

Description

technical field [0001] The invention relates to the technical fields of integrated circuit hardware implementation and information security, in particular to an anti-power consumption attack method for advanced encryption algorithm (Advanced Encryption Standard, AES) hardware circuits. Background technique [0002] With the rapid development of Internet technology and information technology, information encryption technology has very important applications in many fields. Information security products represented by cryptographic devices have penetrated into all aspects of national security and people's lives. Various cryptographic chips based on algorithms such as AES and RSA have been extensively researched and developed. [0003] With the development of information technology, cryptographic chips are also facing more and more security risks. In recent years, side-channel attack (Side-Channel Attack, SCA, also known as "side-channel attack") has become a new cryptographic...

AI Technical Summary

Problems solved by technology

At the same time, the implementation of power consumption analysis attack is relatively simple, and the attack efficiency is very high, which is an important threat to the security of cryptographic algorithm circuits.

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