Color image encryption method based on chaos sequence and hyper-chaos system

A technology of chaotic sequence and encryption method, which is applied in image data processing, image data processing, instruments, etc., and can solve problems such as ignoring mutual influence
CN103489151AInactive Publication Date: 2014-01-01HENAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HENAN UNIVERSITY
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a color image encryption method based on a chaos sequence and a hyper-chaos system. The color image encryption method mainly comprises the following steps: an original color image is subjected to bit level united scrambling to obtain a scrambled image; the scrambled image is decomposed into three primary color components, that is R, G and B, and the hyper-chaos system is used for generating an encryption matrix which is used for encrypting the scrambled image; all pixel values of the three primary color components of the scrambled image are changed by utilizing the encryption matrix in combination with plaintext information and information of the three primary color components, united diffusion is conducted to obtain the three primary color components of the image after the united diffusion, and therefore a final encrypted image is obtained. By means of the color image encryption method, a secret key space is greatly enlarged, the safety, the encryption effect and the sensitivity of a secret key are higher, the anti-attack ability is stronger, and hardware implementation is easier.
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Description

technical field

[0001] The invention relates to a color image encryption method based on a chaotic sequence and a hyperchaotic system. Background technique

[0002] With the wide application of multimedia information technology, multimedia data is widely spread and stored on the Internet. Therefore, in order to effectively protect user information from illegal use, the fundamental measure to be taken is information confidentiality transmission and storage. Traditional encryption algorithms such as International Data Encryption Algorithm (IDEA) and Advanced Encryption Standard (AES) are designed for one-dimensional data streams and are relatively unsuitable for image data encryption. The reason is that images Class information has the characteristics of large amount of data, strong correlation between data, and high redundancy. Therefore, when the above-mentioned traditional encryption algorithm is used for encryption, the encryption efficiency is not high.

[0003] Chaos re...

Claims

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