Unlock instant, AI-driven research and patent intelligence for your innovation.

Image encryption method based on controlled alternate quantum walk and DNA sequence operation

A DNA sequence and encryption method technology, applied in the field of information security, can solve the problems of high computational complexity, low security, and loss in frequency-domain image encryption

Active Publication Date: 2020-04-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Space domain image encryption has low computational complexity but low security, and frequency domain image encryption has high security but high computational complexity and loss

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Image encryption method based on controlled alternate quantum walk and DNA sequence operation
  • Image encryption method based on controlled alternate quantum walk and DNA sequence operation
  • Image encryption method based on controlled alternate quantum walk and DNA sequence operation

Examples

Experimental program
Comparison scheme
Effect test

example

[0079] 1. Select N here 1 =N 2 =49, k=16, making N 1 ×N 2 ×16=38416. Randomly select two parameters θ in the range (0,π / 2) 0 = π / 3, θ 1 = π / 5 generates two unitary coin toss operations

[0080] with

[0081] 2. Select the seed|Φ 0 >=1 / 2[1;1], information value:

[0082] m 0 =0100100001000101010011000100110001001111010101110100111101010010010011000100010001001001010011000100111101010110010001010101010001001000010001010101011101001111010100100100110001000100

[0083] Perform controlled alternating quantum walks on a closed plane of size 49×49. The evolution of the whole system takes place in a Hilbert space , the initial state is |Ψ 0 >=|0,0> p |Φ 0 >, according to the binary string of the information value, perform the unitary operation U=S y CS x C, where coin toss operation C is C 0 or C 1 , walking operation S x , S y for

[0084]

[0085]

[0086] When the tth bit of the binary string is 0, the unitary operation U is performed in the tth step, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an image encryption method based on controlled alternate quantum walk and DNA sequence operation. The pixel value of an original image is changed by performing DNA sequence addition operation on a key matrix, and the pixel position is perturbed and arranged by a random number sequence after probability distribution processing generated by the controlled alternate quantum walk. The scheme provided by the invention has a good encryption effect. The method is highly sensitive to a secret key, can resist common attacks such as statistical attacks and differential attacks, and is high in safety, so that the method is a reliable image encryption method.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a scheme for image encryption using random numbers generated based on controlled alternate quantum walks and DNA sequence operations. Background technique [0002] Existing image encryption is usually realized by image encryption technology in airspace and image encryption in frequency domain. Airspace image encryption technology encrypts uncompressed images, and its feature is to operate on images as two-dimensional data. The typical method of airspace image encryption technology is to use discrete chaos encryption technology. The frequency-domain image encryption technology is encrypted based on a certain compression format or compression technology, such as JPEG, arithmetic coding, wavelet compression technology, etc. Space domain image encryption has low computational complexity but low security, and frequency domain image encryption has high securi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/32H04N1/44H04L9/08G06F21/60
CPCG06F21/602H04L9/0852H04L9/0869H04N1/32272H04N1/44
Inventor 李丹燕婷钱灵
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS