Compressible six-dimensional non-degenerate hyperchaotic image secrecy system and method

A security method and hyper-chaotic technology, which are applied in secure communication through chaotic signals, transmission systems, image communication, etc., can solve the problems of image encryption algorithm, such as large computational load, low computational efficiency, low time series complexity, etc., to improve discrete speed, randomness, and security
CN113890722APending Publication Date: 2022-01-04HUNAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN UNIV OF SCI & TECH
Publication Date
2022-01-04

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Abstract

The invention discloses a compressible six-dimensional non-degenerate hyperchaotic image secrecy system and method. Image data are compressed at an encryption end to obtain a compression coefficient matrix, and the matrix is encrypted by combining a hyperchaotic sequence at the encryption end to obtain ciphertext data. And the decryption end sets an initial value of the hyper-chaotic system according to the key, decrypts the ciphertext data by a chaotic sequence of the hyper-chaotic system of the decryption end, and further reduces the ciphertext data to obtain a plaintext image. The encryption end and the decryption end complete encryption and decryption operations by using SOPC resources, the FPGA performs parallel acceleration on the hyperchaotic discretization process in the SOPC, and the ARM processor completes the image encryption and decryption process in combination with a chaotic sequence. According to the method, hardware resources can be effectively saved in the application process, the discretization speed of the hyperchaotic system is increased by applying the parallel computing advantages of the FPGA, and then the working efficiency of an image secrecy system is improved.
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Description

technical field

[0001] The invention relates to the field of image encryption, in particular to a compressible six-dimensional non-degeneracy hyperchaotic image encryption system and method. Background technique

[0002] With the rapid development of information technology in recent years, social production and life are closely related to the network. As an important information carrier for network transmission, images are widely used in national defense, medical, social, monitoring and other fields. Therefore, it is very important to prevent digital images from being tampered with and information leakage, and establishing a secure image confidential communication mechanism has become an urgent problem to be solved.

[0003] The high-dimensional non-degenerate chaotic system refers to the chaotic system in which the number of positive Li's exponents reaches the maximum. Chaotic systems, especially high-dimensional non-degenerate chaotic systems, have the advantages of sens...

Claims

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