An anti-dpa attack method using clock disorder technology and chaotic trigger

Abstract

The invention discloses a DPA resisting method using a clock out-of-order technology and a chaos trigger, wherein basic module units used in the method comprise a random control signal generation module, a chaos trigger module and a clock out-of-order circuit module, the random control signal generation module comprises a register group for storing a plaintext and a time counter unit, in an initial period of encryption, a pseudorandom control signal is generated through operations to the register group and the time counter unit, the clock out-of-order circuit module generates three clock signals with phase deviation through a PLL and outputs the clock signals with phase deviation according to the control signal to drive the chaos trigger module, and the chaos trigger module forms a master-slave trigger circuit with a chaos unit with a setting-to-1 function and a chaos unit without the setting-to-1 function and completes reconstruction of the circuit under a reset state. The DPA resisting method using the clock out-of-order technology and the chaos trigger, provided by the invention, can make a chaos trigger group storing key data generate chaos at a time point when the data is operated in encryption operation of many times and realize controllable change of dynamic power consumption.

Description

technical field [0001] The invention relates to the fields of information security and digital integrated circuit design, in particular to an anti-DPA attack method using clock disorder technology and chaotic trigger. Background technique [0002] Information security plays an important role in electronic banking, finance, communications, military industry and other fields. As people rely more and more on these fields, the importance of information security cannot be ignored. In order to transmit information more securely and efficiently, engineers generally integrate some encryption algorithms inside the chip to encrypt key information. The encryption algorithms proposed in recent years include DES (Data Encryption Standard, Data Encryption Standard), AES (Advanced Encryption Standard, Advanced Encryption Standard), RSA, ECC (Elliptic Curves Cryptography, Elliptic Curve Cryptography) and HASH (Hash), etc. Encryption algorithms encrypt and protect information through compl...

AI Technical Summary

Problems solved by technology

These circuits have made a great contribution to the method of resisting DPA attacks, but these methods also have certain defects, such as increasing the area or power consumption of the circuit, resulting in an increase in production costs

Images