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Light chaos-based color image encrypted transmission method and system thereof

A technology for encrypted transmission and color image, applied in the field of optical security communication and image encryption, it can solve the problems of limited application scope and work efficiency, high loss, low bandwidth, etc., and achieve the effect of low loss, high bandwidth and long distance.

Active Publication Date: 2017-05-31
SOUTHWEST UNIVERSITY
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  • Claims
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Problems solved by technology

However, electrical chaos will be limited by electronic circuits, leading to problems such as low bandwidth, large attenuation, and high loss, which greatly limits the scope of its application and work efficiency.

Method used

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  • Light chaos-based color image encrypted transmission method and system thereof
  • Light chaos-based color image encrypted transmission method and system thereof
  • Light chaos-based color image encrypted transmission method and system thereof

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Embodiment Construction

[0033] In order to understand the present invention better, below in conjunction with accompanying drawing, embodiment of the present invention is described in further detail:

[0034] A method for encrypted transmission of color images based on optical chaos, said method comprising the following steps:

[0035] Encryption steps: first read in the original image, make the original image go through the preprocessing part to divide it, then perform scrambling encryption and diffusion encryption on the image, use the chaotic laser output as its chaotic sequence, extract the chaotic key from it, and convert the chaotic The key is mixed with the key input by the user to obtain the encryption key, thereby completing the encryption process of the image and obtaining the encrypted image;

[0036] Decryption steps: first read in the encrypted image, then make the encrypted image go through scrambling decryption and diffusion decryption, and combine the chaotic key to decrypt the encryp...

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Abstract

The present invention discloses a light chaos-based color image encrypted transmission method and a system thereof. The system comprises a laser module, an image encryption module and an image decryption module. First, a laser generates chaos output under the action of light feedback, and an encrypted key is extracted from a generated chaos signal; a scrambling and diffusion encryption processing is performed on an original image through 3D cat mapping and Logistic chaos mapping and other methods; and an encrypted image is transmitted in an optical fiber by using a chaos concealment technology, and then the encrypted image is decrypted correspondingly, so as to recover the original image. The color image encrypted transmission method and the system thereof have high security and fast transmission speed.

Description

technical field [0001] The invention relates to the fields of optical security communication and image encryption, in particular to a method and system for encrypted transmission of color images based on optical chaos. Background technique [0002] With the development of modern science and technology, the information age has arrived. People send and obtain information faster and faster, and there are more and more ways. While the information age brings comfort and convenience to people's lives, it also causes problems such as easy copying, tampering, and leakage of information. In military, transportation, economy, politics, education, media and other fields, a huge amount of image information will be generated every second, some of which are very valuable and need to be highly confidential. Therefore, the security and confidentiality of image information has become very important, and the method and method of image encryption transmission have become the focus of people's...

Claims

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Application Information

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IPC IPC(8): H04N1/32H04L9/00G06T1/00
CPCH04L9/001H04N1/32272G06T1/00
Inventor 解宜原刘波成刘玉珠
Owner SOUTHWEST UNIVERSITY
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