A hardware implementation device and method of fruit-80 ultra-lightweight encryption algorithm

Abstract

The invention discloses a hardware implementation device and method of Fruit-80 ultra-lightweight encryption algorithm, the hardware implementation device includes a key rotation function, a nonlinear feedback shift register, a linear feedback shift register, a key stream output function and State control unit; the key rotation function is used to provide two key-related bits; the nonlinear feedback shift register and the linear feedback shift register respectively contain a nonlinear feedback function and a linear feedback function; the key stream output function every round Extract the internal state of the nonlinear feedback shift register and the linear feedback shift register, and generate the key stream for encryption; the state control unit is used for the encryption stage of the device, and coordinates the states of the nonlinear feedback shift register and the linear feedback shift register renew. The hardware implementation device and method disclosed in the present invention can reduce the hardware resource occupation of the Fruit-80 ultra-lightweight serial cipher, and maximize its throughput rate.

Description

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

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.

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