Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cylindrical surface diffraction and interference principle-based image encryption method

An encryption method and cylinder technology, which is applied in the field of information security technology and information optics, can solve the hidden dangers of encryption system security and other problems, and achieve good anti-attack ability, good security, and anti-attack effects

Active Publication Date: 2019-03-08
SICHUAN UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, recent studies have shown that there is a "contour appearance problem" in the phase plate obtained directly by the interference method, that is, when any phase plate as the encryption result is placed in the decryption device, the contour of the original image can be obtained on the output surface. There is a great hidden danger in the security of such an encryption system.

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
  • Cylindrical surface diffraction and interference principle-based image encryption method
  • Cylindrical surface diffraction and interference principle-based image encryption method
  • Cylindrical surface diffraction and interference principle-based image encryption method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] A typical embodiment of an image encryption method based on the principle of cylindrical diffraction and interference of the present invention will be described in detail below, and the present invention will be further described in detail. It is necessary to point out here that the following examples are only used for further explanation of the present invention and cannot be understood as limiting the scope of protection of the present invention. Those skilled in the art have made some non-essential improvements to the present invention based on the above-mentioned content of the present invention. And adjustments still belong to the protection scope of the present invention.

[0024] The specific implementation of the method of the present invention is as follows:

[0025] (1) The image encryption process (such as figure 1 Shown) is divided into the following steps:

[0026] (I) The image to be encrypted (I) is combined with the random phase plate (R1) to form a complex am...

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, aiming at system security hidden danger of an image encryption technology based on an optical interference principle, provides a cylindrical surface diffraction and interference principle-based image encryption method. According to the method, a traditional interference principle-based image encryption method is improved, and an image is encrypted into two pure phase plates by replacing Fresnel diffraction or Fraunhofer diffraction with cylindrical surface diffraction. An inside-out propagation model and an outside-in propagation model of the cylindrical surface diffraction area pair of natural asymmetric diffraction processes, and the cylindrical surface diffraction process is introduced, so that the image encryption method disclosed by the invention solves the "contour display problem", the attack of an iterative recovery algorithm can be resisted, and the security of an encryption system is greatly improved.

Description

Technical field [0001] The invention relates to an information security technology and the field of information optics, especially an image encryption method. Background technique [0002] The application of optical interference principle for image encryption is a hot topic in the field of optical information security research in recent years. In 2008, Zhang Yan and other scholars of Capital Normal University first proposed an image encryption method based on the principle of optical interference [Y. Zhang, B. Wang. Optical image encryption based on interference [J]. Opt.Lett., 2008, 33(21 ): 2443-2445.], using the interference principle to analytically encrypt an image into two phase plates, only using a light intensity detector, such as CCD, can easily obtain the decryption result on the output surface of the decryption system. However, recent studies have shown that the phase plate obtained directly by the interference method has a "contour display problem", that is, when any...

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): H04N1/32
CPCH04N1/32144H04N1/32272
Inventor 王君陈旭东吴超
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products