Bit plane image compression encryption algorithm based on hyperchaotic system and DNA coding

Abstract

The invention provides a novel multi-process image compression encryption algorithm which is based on a super Lorenz system and is simultaneously combined with a two-dimensional compressed sensing algorithm, an image bit plane decomposition method and DNA coding. The method mainly comprises the following steps of: sampling a plain text image by adopting a compressed sensing algorithm according to a compression ratio, obtaining four groups of pseudo-random sequences with specified lengths through a super Lorenz system based on the compressed image, decomposing the compressed image to obtain eight bit planes, scrambling the eight bit planes by combining integers of the pseudo-random sequences respectively, performing DNA coding on the scrambled image and the integer pseudo-random sequence, and performing exclusive or operation based on DNA coding on the scrambled image and the integer pseudo-random sequence to obtain a cipher text image. The encryption algorithm provided by the invention has very strong plain text correlation, and the execution efficiency of the algorithm is also improved while the security is ensured.

Description

technical field [0001] The invention relates to the technical field of image encryption, in particular to a bit-plane image compression and encryption method based on a hyperchaotic system and DNA coding. Background technique [0002] Since the 1990s, the rapid development of computer-based information science and technology has brought great changes to people's lives. At the same time, the media for information storage and dissemination are gradually moving towards diversification and convenience. Digital images have gradually replaced text and become one of the most important ways of information storage and transmission in today's society due to their rich information storage capabilities, intuitive information expression capabilities, and ease of network transmission. [0003] Therefore, with the rapid development of computer science and technology today, encryption algorithms for digital images have gradually become a research hotspot. [0004] However, in recent years,...

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Problems solved by technology

[0004] However, in recent years, individuals and organizations have suffered losses due to the leakage of image information. This is due to the huge differences between digital images and text in storage methods and file encoding. Traditional methods such as AES, DES, and RSA Encryption standards or techniques do not provide effective protection for information stored in digital images

At the same time, due to the limitation of computer computing power and the slow development of theories and standards related to digital image encryption, some old digital image encryption algorithms often have insufficient security and cannot resist deciphering attacks from outside.

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