Image authenticity encryption method and system

An encryption method and encryption system technology, applied in the field of image fidelity encryption method and system, can solve the problems of inconvenient storage and distribution, repetitive and cumbersome operations, etc., and achieve the effect of convenient storage and transmission and enhanced randomness

Active Publication Date: 2020-11-06
湖北鲲鹏芯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the results obtained by some existing encryption methods are complex numbers, which are not convenient for storage and distribution
For the encrypted transmission of multiple image encryption, although the existing single image encryption method can be used, this repetitive operation is too cumbersome

Method used

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  • Image authenticity encryption method and system
  • Image authenticity encryption method and system
  • Image authenticity encryption method and system

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Embodiment Construction

[0082] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0083] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention discloses an image truth-preserving encryption method and system, and the method comprises the steps: S1, dividing a to-be-encrypted image into a plurality of groups, and each group comprising two images; S2, adopting complex representation to link the two images of each group together, and using gyrator transformation to perform double random phase encryption; S3, converting the plurality of groups of complex results subjected to double random phase encryption into a plurality of groups of real number matrixes in a one-to-one correspondence manner; and S4, performing multi-resolution singular value decomposition on the plurality of groups of real number matrixes, and constructing a linear equation to obtain a final ciphertext. The method has the advantages that ciphertext data in a real number form can be generated and are convenient to store and transmit; and meanwhile, the randomness of the ciphertext is further enhanced by adopting multi-resolution singular value decomposition.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image fidelity-preserving encryption method and system. Background technique [0002] With the continuous development of image acquisition technology and equipment and multimedia communication technology, the application of digital images is becoming more and more extensive, and a large number of public or private images are transmitted through the network every day. Since the "visible" digital image content contains some private information, it may be easily obtained and subject to illegal copying, intentional modification, etc., which has always led to serious consequences. Therefore, the security of information carried by images has attracted more and more attention. [0003] Among many image content protection methods, image encryption, as an effective image content protection method, has been continuously researched since the double random phase encryption algor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/44H04L9/08
CPCH04L9/0861H04N1/44
Inventor 邵珠宏尚媛园赵晓旭丁辉王云飞
Owner 湖北鲲鹏芯科技有限公司
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