DNA one-time pad image encryption method based on multiple keys

An encryption method and key technology, applied in the usage of multiple keys/algorithms, encryption devices with shift registers/memory, secure communication through chaotic signals, etc., can solve problems such as difficulty in storage, and achieve high security, Satisfactory histogram effect, large key space effect

Active Publication Date: 2020-11-24
DALIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Solved the problem that the one-time pad is difficult to store in garbled code books, and realized the encryption effect of the one-time pad

Method used

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  • DNA one-time pad image encryption method based on multiple keys
  • DNA one-time pad image encryption method based on multiple keys
  • DNA one-time pad image encryption method based on multiple keys

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Embodiment Construction

[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such ...

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Abstract

The invention provides a DNA one-time pad image encryption method based on multiple secret keys, and the method comprises the steps: obtaining four encryption parameters through the calculation of two-dimensional discrete cosine transform, two-dimensional inverse discrete cosine transform, two-dimensional discrete Fourier transform and two-dimensional inverse discrete Fourier transform according to a to-be-encrypted image; taking the four encryption parameters as initial values of four chaos respectively to generate four chaotic sequences; selecting a natural DNA sequence, and processing the four chaotic sequences by using the natural DNA sequence to obtain two diffusion matrixes and two scrambling matrixes; and alternately performing two rounds of diffusion operation and two rounds of scrambling operation on the to-be-encrypted image to obtain an encrypted image. According to the invention, the initial values of all chaotic functions are obtained by calculating the original image information, so that the differential attack can be well resisted. Meanwhile, the problem that one-time pad messy codebooks are difficult to store is solved by utilizing massive DNA sequences, the one-time pad encryption effect is achieved, and the security of the encryption method is improved to a great extent.

Description

technical field [0001] The invention relates to the fields of multimedia information security and image encryption, in particular to a DNA one-time pad image encryption method based on multiple keys. Background technique [0002] With the advent of the era of big data, a large number of digital images are generated every day, and these images carry a large amount of information. People rely on the Internet to transmit image information. This delivery method is not only free from geographical restrictions, but also efficient and fast, and can save a lot of money at the same time. However, due to the flaws in the network itself, such as protocols and systems, people have to consider how to improve the security of image information while enjoying the convenience brought by network transmission. Image encryption technology is proposed to prevent important image information from being illegally stolen or tampered with. At present, image encryption technology has been widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/14H04L9/06H04L9/00G06F21/60
CPCH04L9/14H04L9/0631H04L9/001G06F21/602Y02D30/50
Inventor 周士华王宾
Owner DALIAN UNIV
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