Lightweight encryption algorithm scenery implementation method, device and storage medium

Abstract

The invention discloses a lightweight cryptographic algorithm SCENERY implementation method, a lightweight cryptographic algorithm SCENERY implementation device and a storage medium. The method comprises the steps that a plaintext to be encrypted is acquired, IP1 initial replacement, a round function, key expansion and IP2 replacement are carried out in sequence, the round function comprises sequentially carrying out round key addition operation, S box replacement and M matrix replacement on data, and the key expansion comprises sequentially carrying out S box replacement, cyclic left shift, round constant addition operation and DP dynamic replacement on a key. An F function of an SPN structure is adopted as a round function, and a binary matrix M is constructed with the purpose of achieving high dependence when an F function linear layer is designed; a round constant and a key expansion intermediate result are selected as control signals for key expansion; DP dynamic replacement is carried out on a current round key expansion intermediate result to obtain a round key, which is a new key expansion mode, the relevance of single key iteration to front wheel input is reduced, the decoding difficulty is increased, the security is improved, and differential and linear attacks and algebraic attacks can be particularly and effectively resisted.

Description

technical field [0001] The invention relates to the field of computer encryption, in particular to a method, device and storage medium for realizing a lightweight cryptographic algorithm SCENERY. Background technique [0002] In recent years, small embedded devices (such as wireless sensors, smart cards, radio frequency tags) have been widely used in many fields. These devices usually have strong cost constraints, such as area, power, energy consumption in terms of hardware, etc. Since traditional cryptographic algorithms such as AES are not suitable for such extremely limited equipment, lightweight block cipher algorithms suitable for resource-constrained environments have attracted great attention from scholars. [0003] Since 2007, some papers on lightweight block cipher algorithms have been proposed in international academic circles. At present, there are some lightweight block cipher algorithms, typical representatives such as PRESETNT, Twine, Piccolo, LED, LBlock, RE...

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Problems solved by technology

[0007] The present invention provides a light-weight encryption algorithm SCENERY implementation method, device and storage medium to solve the problem of low encryption performance of light-weight block cipher algorithms and relatively simple key expansion operations in the prior art, low flexibility and vulnerability attack problem

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