Quantum image encryption method based on image association dissection

Abstract

Disclosed is a quantum image encryption method based on image association dissection. A quantum-state superposition and measurement principle is used to establish correlation between image pixels. An image is dissected into superposition of a series of characteristic sub-images. Conversion operations are performed on the characteristic sub-images stored in a complete binary-tree digit group through use of a random phase door and a quantum rotating door and then a plurality of superpositions are performed on all the images through quantum-state superposition so as to obtain a cipher image. Schmidt orthogonal dissection is performed on the quantum random phase door, the quantum rotating door, a coefficient matrix and the cipher image so as to obtain a standard orthogonal ground state which is then used as a key. The quantum image encryption method based on the image association dissection has a larger key space so that strong attacks can be resisted and combination of a quantum-mechanical theory and an image encryption technology is realized. The method has classical information theory security and quantum information theory security so that quantum image encryption surpasses restriction of classical image encryption and compared with classical images, quantum images are higher in security.

Description

technical field [0001] The patent of the present invention belongs to the field of information security technology, and particularly relates to quantum image encryption technology. Background technique [0002] With the development of digital products and the Internet, people are increasingly dependent on network systems and network information resources, making network information security issues increasingly prominent. Therefore, information security technology has attracted much attention, and encryption technology is the core of information security. As a special information carrier, image is widely used in various fields due to its characteristics of intuition, vividness and image. Image data is generally relatively large, and it is time-consuming to complete image processing tasks. Therefore, it will be a dream to use more powerful quantum computers to effectively complete image processing tasks. [0003] The world's first programmable general-purpose quantum computer...

AI Technical Summary

Problems solved by technology

However, many problems that should be involved in quantum image encryption have not been resolved, such as the complete transformation set of quantum images and the physical and information theory models of quantum image security.

In order to maintain the superiority of quantum image encryption, the patent of the present invention proposes a quantum image encryption method based on image correlation decomposition. This method not only guarantees the security of classical information theory of quantum image encryption algorithm, but also has the security of quantum information theory, which can enhance the encryption system. In addition, the quantum image encryption scheme with a larger key space makes the brute force attack invalid

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