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A New Encryption Method for Three-Dimensional Mapping Image

An encryption method and three-dimensional technology, applied in the field of information security, which can solve the problem of not being able to resist plaintext attacks.

Active Publication Date: 2021-07-06
湖南东舟信息有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it cannot defend against plaintext attacks

Method used

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  • A New Encryption Method for Three-Dimensional Mapping Image
  • A New Encryption Method for Three-Dimensional Mapping Image
  • A New Encryption Method for Three-Dimensional Mapping Image

Examples

Experimental program
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Embodiment Construction

[0054] Two-dimensional mapping principles and examples such as figure 1 , 2 shown. The image is regarded as an array, and the principle of mapping is to insert the pixels of each column of the image (array) into the adjacent pixels of the corresponding row, repeat this operation, form the original image into a pixel row, and then fold it.

[0055] For example, the pixels in the first column are sequentially inserted between the two pixels in the first row, the pixels in the second column are sequentially inserted between the two pixels in the second column, and the above process is repeated in turn to form a A straight line (row of pixels) made of pixels.

[0056] Taking a 4*4 image as an example, the pixel (1,0) in the first column is inserted between the pixels (0,0) and (0,1) in the first row, and the pixel (2,0) in the first column ) is inserted between pixels (0,1) and (0,2) of the first row, and the above process is repeated to form pixel rows: (0,0), (1,0), (0,1), (...

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Abstract

The invention provides a new three-dimensional mapping image encryption method, which belongs to the field of information security. This method uses the idea of ​​image folding and stretching, and inserts the column pixels of the square image between the adjacent pixels of the corresponding row to form a pixel row. Then, eight two-dimensional maps were obtained by using different folding methods. Then the image is divided into 8 layers according to the pixel value. These 8 two-dimensional maps are used to perform pixel scrambling operation on each layer respectively to form eight three-dimensional maps. When encrypting, the mapping combination is designed as a key. Encryption changes both pixel values ​​and positions. The present invention adopts multiple mapping combinations to encrypt at the same time, and the key space is relatively large. In addition, two-dimensional mapping is used to scramble each layer of the layered image, and the pixel position and pixel value are changed at the same time, which enhances the security of encryption. The present invention can be applied to network image encryption occasions.

Description

technical field [0001] The invention relates to a new three-dimensional mapping image encryption method, which belongs to the field of information security. Background technique [0002] With the continuous development of networks, especially wireless networks, image applications are becoming more and more extensive. But at the same time, there are more and more malicious attacks on images, and even information leakage. How to ensure image security and prevent privacy from being leaked and spread has become an important issue that many people care about. [0003] Encryption technology is the basis of information security. Encryption technologies such as DES, AES, and RSA based on text encryption have played an important role in the fields of national economy, social life, national defense and military affairs. However, unlike text information, images have a large amount of data and strong correlation between pixels. For example, an image has color, texture, shape. The e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00G06T3/00
CPCG06F21/602G06T1/00G06T3/06
Inventor 黄峰雷芳芳
Owner 湖南东舟信息有限公司