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Image encryption and reading methods and devices

An encryption method and image technology, applied in image data processing, image data processing, graphics and image conversion, etc., can solve problems such as low confidentiality, non-compliance, and changes in image pixel values

Inactive Publication Date: 2014-09-24
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0003] Although the existing image encryption technology based on pixel replacement is simple and easy, it does not change the pixel value of the image, and the histogram of the image does not change, so its confidentiality is not high, and it does not conform to the modern encryption system

Method used

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  • Image encryption and reading methods and devices
  • Image encryption and reading methods and devices
  • Image encryption and reading methods and devices

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Embodiment Construction

[0078] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0079] Such as figure 1 As shown, an image encryption method includes:

[0080] Step 100, performing Arnold transformation on the original image to form a scrambled image;

[0081] Step 200: Encrypt the scrambled image according to Chen's chaotic sequence to obtain a target image.

[0082] The above method first performs Arnold transformation on the image to scramble the image, and then uses Chen's chaotic sequence to encrypt the scrambled image. The whole process is simple and easy. Based on the characteristics of Chen's chaotic sequence, the key of this method is Large space, high confidentiality, difficult to be cracked.

[0083] Specifically, in the above-mentioned embodiment of the present invention, step 100 includes:

[0084] Step 110, judging...

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Abstract

The invention provides image encryption and reading methods and devices, and relates to the field of image encryption. The image encryption method comprises: performing Arnold transformation on an original image to form a scrambling image; and according to a Chen' chaotic sequence, encrypting the scrambling image to obtain an object image. According to the methods and devices provided by the invention, first of all, an image is scrambled through the Arnold transformation, then encryption processing is carried out by use of the Chen' chaotic sequence, the whole process is simple and easily implemented, the secret key space is large, and the security is high.

Description

technical field [0001] The invention relates to the field of image encryption, and in particular provides an image encryption and reading method and device. Background technique [0002] With the rapid development of network technology and multimedia technology, digital images have been widely used in people's lives, but the more widely they are used, the more important their security is. With the popularization of computers, the ways and means of deciphering are increasing day by day, and the number of crimes using computers is increasing year by year. Digital image security has become an important topic in the field of computers. Digital image encryption is an effective method to protect image security. [0003] Although the existing image encryption technology based on pixel replacement is simple and easy to implement, it does not change the pixel value of the image, and the histogram of the image does not change, so its confidentiality is not high, and it does not confo...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06T3/00
Inventor 严登华鲁帆肖伟华杨贵羽吴迪张鹏
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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