Color image encryption method based on cellular neural network hyperchaos and DNA sequence

Abstract

The invention belongs to the technical field of information security, and particularly relates to a color image encryption method based on cellular neural network hyperchaos and a DNA sequence. The method provided by the invention comprises the steps of separating red, green and blue three primary color components of a color plaintext image; updating and generating parameters and initial values of a six-order cellular neural network hyperchaotic system and a Logistic-Sine mapping system through the plaintext image, respectively carrying out iterative operation on the two chaotic systems, and obtaining red, green and blue components of an encrypted image according to a DNA encoding rule and a DNA decoding rule; and finally, changing the pixel values of the encrypted image through key stream and a bitwise XOR operation to obtain a final ciphertext image. The decryption is a reverse operation of the encryption process. Compared with the existing image encryption method, the color image encryption method provided by the invention has the advantages of high security, good encryption effect, strong robustness, no information loss and the like, and thus being capable of being widely used in military, remote sensing, remote medical treatment, commerce and other fields.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a color image lossless encryption method based on hyperchaos and DNA sequences. Background technique [0002] With the rapid development of information science and network technology, more and more digital media content such as text, images, audio, video, etc. are widely disseminated on the Internet, and how to ensure the security of digital media information has become an important and urgent issue . Digital image encryption is an important part of multimedia information security, and has been widely concerned and deeply studied by scholars at home and abroad. Due to the inherent characteristics of digital images, such as large data volume, strong correlation between adjacent pixels, and high redundancy, traditional encryption algorithms such as DES, AES, and RSA are not suitable for digital image encryption. [0003] In recent years, people have found...

AI Technical Summary

Problems solved by technology

The implementation of the early DNA encryption algorithm required sophisticated instruments and expensive experimental materials

In 2009, Kang proposed a pseudo-DNA encryption algorithm in the document "ApseudoDNA cryptography method" [arXiv:0903.2693,2009], which realizes the encryption of information by simulating DNA calculations on computers, and does not require a real biological experiment environment, but the method only applies to text encryption

[0005] In order to overcome the defects of the existing image encryption algorithm based on DNA calculation, the present invention proposes a robust color image encryption algorithm using the sixth-order cellular neural network hyperchaos and DNA sequence operation

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