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Image encryption method and device and image decryption method and device

An encryption method and image technology, which is applied in the computer field, can solve the problems of original image image characteristics, original image distortion, and image visual effects.

Inactive Publication Date: 2022-05-10
HUNDSUN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the original image is implicitly encrypted to hide the copyright information or custom private information in the original image to prevent the original image from being stolen. However, this method will change the image characteristics of the original image, resulting in The image features are affected, which in turn distorts the original image and affects the visual effect of the image

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  • Image encryption method and device and image decryption method and device
  • Image encryption method and device and image decryption method and device
  • Image encryption method and device and image decryption method and device

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Embodiment Construction

[0041] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the specification. However, this specification can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of this specification, so this specification is not limited by the specific implementations disclosed below.

[0042] Terms used in one or more embodiments of this specification are for the purpose of describing specific embodiments only, and are not intended to limit one or more embodiments of this specification. As used in one or more embodiments of this specification and the appended claims, the singular forms "a", "the", and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present specification refers t...

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Abstract

The embodiment of the invention provides an image encryption method and device and an image decryption method and device. The image encryption method comprises the following steps: receiving a to-be-encrypted image and a self-defined key sequence; carrying out encryption processing on the self-defined key sequence based on an encryption template to obtain an encrypted digital sequence; decomposing the to-be-encrypted image to obtain an image feature vector of the to-be-encrypted image; performing fusion processing on the encrypted digital sequence and the image feature vector of the to-be-encrypted image to generate an encryption matrix of the to-be-encrypted image; the target encrypted image is generated based on the encryption matrix, the encryption process is simple in calculation, the encryption process is also simple, and the quality of the original image can be guaranteed on the premise that the visual effect of the image is not affected.

Description

technical field [0001] The embodiments of this specification relate to the field of computer technology, and in particular to an image encryption method and an image decryption method. Background technique [0002] With the advent of the era of big data and cloud computing, people pay more and more attention to data, especially the protection awareness of copyright data. Commercial pictures and videos have become the core assets of data companies. The illegal copying, modification, and use of copyright pictures violate the rights and interests of the owners. Especially in the financial scene, the phenomenon of forging private or company electronic seals to falsify materials also occurs from time to time. At present, the original image is implicitly encrypted to hide the copyright information or custom private information in the original image to prevent the original image from being stolen. However, this method will change the image characteristics of the original image, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/10G06F21/60G06F21/64H04L9/40
CPCG06F21/10G06F21/602G06F21/64H04L63/0428
Inventor 王旭伟张良友成帆杜博纶张硕余家林
Owner HUNDSUN TECH
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