Novel low-resource efficient lightweight Surge block cipher implementation method

Abstract

The invention discloses a novel low-resource efficient lightweight Surge block cipher implementation method. The method comprises the steps that the Surge block length is designed to be of a 64-bit type, and the secrete key length is designed to be of the 64-bit type, the 80-bit type and the 128-bit type on the basis of the SPN structure; a secrete key is in a non-extensible mode; five modules of a round function are combined in a new mode, the encryption sequence is constant addition, round key addition, S-box replacement, row shifting and column mixing transformation, and column mixing transformation does not exist in the last round; a constant addition transformation module operates a round constant in each round; according to the round constant selection combination, 0, 1, 2 and 3 are selected as the high bits, the combination of one odd number, one even number, one even number and one add number from 0 to 15 is selected as the low bits, and the obtained combinatorial numbers are randomly fixed into a permutation; a column mixing transformation module utilizes the (0,1,2 and 4) combination which facilitates hardware implementation for forming a matrix, and hardware is constructed on a galois field GF (24) to obtain the friendly matrix. The experimental result shows that the occupied area resources are smaller, meanwhile, the encryption performance is good and the known attacks can be resisted compared with existing lightweight ciphers of the SPN structure.

Description

technical field [0001] The invention relates to a method for realizing a lightweight Surge block cipher. Background technique [0002] The block cipher algorithm uses the same key for encryption and decryption, which is fast, easy to implement, and easy to achieve synchronization. The transmission error of one cipher group will not affect other groups, and the loss of a ciphertext group will not affect the decryption of subsequent groups. Impact, that is, transmission errors will not spread, so it is widely used in various software and hardware security systems. With the development and popularization of the Internet of Things technology, many devices in the Internet of Things have low computing power, small storage space, and limited resources, such as smart cards, RFID tags, sensor nodes, pay TV cards, smart meter cards, etc.; among these devices Traditional block encryption algorithms cannot be well applied. [0003] Currently, block ciphers mainly have two structures: ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for implementing a lightweight Surge block cipher, the purpose of which is to overcome the problems of heavy resource occupation, low efficiency, low encryption performance and vulnerability to attacks of the lightweight block cipher algorithm in the prior art

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