One-time pad optical image encryption and decryption method based on fractional order quantum chaos

Abstract

Based on fractional-order quantum chaos, an encryption and decryption method of a one-time dense optical image is disclosed, and the invention relates to the technical field of optical information security, which can solve the non-linear security defects of the existing optical image encryption technology, as well as security vulnerabilities that are not resistant to known and selective plaintextattacks. The method makes up for the security defect that the linear characteristic of the traditional optical image encryption technology is insufficient, and the fractional-order quantum chaotic system has a higher key dimension, the quantum chaotic system is a new type of nano-device, which is composed of quantum dots and quantum cellular automata. The random phase template generated by the encryption method is related to plaintext, that is, when the encrypting party encrypts different plaintext images, the random phase template generated by the encrypting party is different even if the user keys used are the same.

Description

technical field [0001] The invention relates to the technical field of optical information security, in particular to a one-time encryption and decryption method for optical images based on fractional order quantum chaos and deformed fractional Fourier transform. Background technique [0002] With the rapid development of information technology, some encryption methods that use physical quantities such as optical signals and quantum signals to carry information and undergo physical transformations have emerged as the times require. The data volume of image files is large, and the efficiency of encrypting images with traditional encryption methods is low. The optical information system has strong parallel processing capabilities, fast data processing speed, and the greater the amount of information processed, the greater the advantage over electronic information systems. obvious. The parameters of the optical information system can also be used as the user key to increase th...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a one-time cipher based on fractional quantum chaos in order to solve the security flaws of the existing optical image encryption technology, such as the lack of nonlinearity, and the security loopholes that cannot resist known plaintext attacks and chosen plaintext attacks, resulting in low efficiency. Optical Image Encryption and Decryption Method

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