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Image encryption method and device, image decryption method and device, electronic equipment and medium

An encryption method and image technology, applied in image data processing, image data processing, computer security devices, etc., can solve the problems of complex encryption and decryption process, and achieve the effect of ensuring reliability and realizing dynamic encryption.

Pending Publication Date: 2021-12-14
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present disclosure is to provide an image encryption method, image decryption method, device, storage medium and electronic equipment, at least to a certain extent, to overcome the problem that the realization of the encryption and decryption process in the related art is relatively complicated

Method used

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  • Image encryption method and device, image decryption method and device, electronic equipment and medium
  • Image encryption method and device, image decryption method and device, electronic equipment and medium
  • Image encryption method and device, image decryption method and device, electronic equipment and medium

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Embodiment Construction

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0037] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities ...

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PUM

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Abstract

The invention provides an image encryption method and device, an image decryption method and device, electronic equipment and a medium, and relates to the technical field of image encryption. The image encryption method comprises the following steps: acquiring an image feature value of a to-be-encrypted image; generating a reversible execution encryption matrix based on the image feature value; partitioning a pixel matrix of the to-be-encrypted image based on the number of rows and / or the number of columns of the encryption execution matrix to obtain a plurality of partitioned pixel matrixes; multiplying each block pixel matrix by the encryption execution matrix to obtain a plurality of encryption blocks; and assembling the plurality of encrypted blocks based on the sequence of the blocks to generate an encrypted image. According to the technical scheme, the reliability of encryption operation and the security of the encrypted image are ensured, the implementation process of encryption is simplified, and operation is easy.

Description

technical field [0001] The present disclosure relates to the technical field of image encryption, and in particular to an image encryption method, an image decryption method, a device, electronic equipment, and a storage medium. Background technique [0002] Currently used encryption methods for image transmission include chaotic matrix encryption, etc. Chaotic matrix encryption generates multiple sets of chaotic sequences by introducing inverse affine transformation on the integer domain, combined with two-dimensional logistic chaotic maps, and these chaotic sequences are controlled to realize pixel Scrambling transformation and gray value replacement are used to realize image encryption. Although it has good security, the encryption and decryption process based on chaotic matrix encryption is relatively complicated, and a relatively complicated key string is required to be able to decrypt correctly. [0003] It should be noted that the information disclosed in the above ba...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06F21/60
CPCG06T1/0021G06F21/602
Inventor 董伯平刘庆详赵庆明
Owner CHINA TELECOM CORP LTD
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