Hardware implementation device and method for Fruit-80 ultra-lightweight encryption algorithm

Abstract

The invention discloses a hardware implementation device and method for a Fruit-80 ultra-lightweight encryption algorithm. The hardware implementation device comprises a key rotation function, a nonlinear feedback shift register, a linear feedback shift register, a key stream output function and a state control unit. The key rotation function is used for providing two key correlation bits; each of the nonlinear feedback shift register and the linear feedback shift register comprises a nonlinear feedback function and a linear feedback function; the key stream output function extracts the internal states of the nonlinear feedback shift register and the linear feedback shift register in each round, and generates a key stream for encryption; and the state control unit is used for coordinating the state updating of the nonlinear feedback shift register and the linear feedback shift register in the password stage of the device. According to the hardware implementation device and method disclosed by the invention, the hardware resource occupation of the Fruit-80 ultra-lightweight sequence cipher can be reduced, and the throughput rate of the Fruit-80 ultra-lightweight sequence cipher can be improved to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of encryption algorithms, in particular to a hardware implementation device and method for the Fruit-80 ultra-lightweight encryption algorithm. Background technique [0002] Lightweight cryptography has become one of the research hotspots in cryptography in recent years due to its advantages of high security and compact design, and has attracted much attention in the field of Internet of Things security applications. Traditional lightweight serial ciphers, such as Grain, Trivium, and WG series, have short key lengths and extremely compact internal states, so hardware and software implementations are highly efficient. However, this sequence cipher with only 80-bit key length is easily broken by time-memory-data compromise attack (TMDTO). The Sprout sequence cipher provides a new idea for ultra-lightweight cipher design. The key rotation function is added to enable the key to participate in the internal state...

AI Technical Summary

Problems solved by technology

[0004] As an ultra-lightweight cipher, Fruit-80 has a more compact internal state than traditional ciphers, and has strong application prospects in miniaturized terminals. However, there is currently no Fruit-80 hardware implementation strategy for multiple scenarios.

Images