Color image encryption method based on SHA-384 function, spatiotemporal chaotic system, quantum chaotic system and neural network

A SHA-384, spatiotemporal chaos technology, applied in image data processing, image data processing, instruments, etc., can solve problems such as increasing hardware overhead, not using encryption algorithms, and less periodic orbits
CN104008520BActive Publication Date: 2015-05-13HENAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN UNIVERSITY
Publication Date
2015-05-13

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Abstract

The invention relates to a color image encryption method based on an SHA-384 function, a spatiotemporal chaotic system, a quantum chaotic system and a neural network. The method includes the steps that an original color image I0 is calculated through the SHA-384 function, a Hash value is obtained as a secret key, the Hash value, a CML and one-dimension Logistic chaotic mapping are utilized for generating a chaos sequence, bit-level line-column scrambling is carried out on high four-digit images of components of three primary colors of the I0 through the chaos sequence, and a scrambled image I1 is obtained; the Logistic quantum chaotic system is utilized for generating a chaos sequence for encrypting the scrambled image, and is combined with the neural network to carry out parallel diffusion processing on all pixel values of components of three primary colors of the I1, and a final encrypted image I2 is obtained. By the method, the space of the secret key is greatly enlarged, the safety, encryption effect and secret key sensibility are higher, the attack resistance capacity is higher, the scrambling process and the encryption time are shorter, and hardware implementation is easier.
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Description

technical field

[0001] The invention relates to an encryption method, in particular to a color image encryption method based on SHA-384 function, space-time chaos system, quantum chaos system and neural network. Background technique

[0002] With the rapid development of multimedia and network technology, more and more multimedia information, such as audio, video, and especially image information, needs to be transmitted through the network, and the subsequent information security and confidentiality issues are becoming more and more important. Image information has the characteristics of large data volume, strong correlation between adjacent pixels, and high redundancy. Traditional encryption methods, such as DES, AES, and RSA, are designed for one-dimensional data and are mainly used for encryption of text information. Not suitable for encryption of image data. The chaotic system has the characteristics of randomness, determinism, ergodicity, and high sensitivity to the i...

Claims

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