Image encryption method based on chaos theory and DNA splice model

Abstract

The invention discloses an image encryption method based on a chaos theory and a DNA splice model. DNA encryption belongs to a new cryptology field arising along with the DNA computation in recent years. The image encryption method is characterized in that DNA is used as an information carrier, the modern biological technology is used as an implementation tool, high storage density and high parallelization and the like of the DNA are developed, and cryptology functions of encryption, authentication, signature and the lie are realized. Because of a series of properties of wide frequency spectrum, random-like property, extreme sensitivity for structure parameters and initial state, and the like, a chaos system has the characteristic of difficult reconstruction and prediction, and is an important field of the cryptology research. By combining the advantages of the DNA cipher and the chaos theory, the invention provides an image grouping encryption technology based on a chaos and DNA splice model. The method comprises the steps of: firstly, setting a coding rule of the DNA, carrying out DNA coding and optimization on a secret image to obtain a DNA plaintext sequence and generate a corresponding chaos sequence; and setting DNA sequence grouping encryption algorithm based on the DNA splice calculation model according to the generated chaos sequence and the generated DNA plaintext sequence for realizing the information encryption of the image, thereby effectively improving the encryption effect of the information of the image.

Description

technical field [0001] The invention belongs to the field of information security, and in particular relates to an encryption method of a digital image, which is a method for encrypting a secret image in the field of information security. Background technique [0002] With the rapid development of digital technology and computer network, people can conveniently transmit various multimedia information through the network. However, because digital products are extremely easy to be copied, tampered, illegally disseminated and deliberately attacked, in order to ensure that information will not be stolen or tampered with during transmission, people are also concerned about the security of information transmission while enjoying the fast and convenient information transmission. and confidentiality put forward higher requirements. At the same time, today's world pattern has undergone earth-shaking changes, international relations have become increasingly complex, and the struggle ...

AI Technical Summary

Problems solved by technology

DNA encryption is a new field of cryptography that has emerged with the research of DNA computing in recent years. It is characterized by using DNA as an information carrier and using modern biotechnology as a tool to exploit the inherent advantages of DNA, such as high storage density and high parallelism. Realize cryptographic functions such as encryption, authentication and signature, but the existing research on DNA encryption mainly focuses on how to use DNA biological chain for encrypted storage of information, and due to the limitations of equipment and biological operation technology, this method is technically difficult not really useful

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