PERMISSION HIERARCHY-BASED METHOD AND SYSTEM FOR SHARING AND RECONSTRUCTING SECRET IMAGE

Title:

PERMISSION HIERARCHY-BASED METHOD AND SYSTEM FOR SHARING AND RECONSTRUCTING SECRET IMAGE

Document Type and Number:

WIPO Patent Application WO/2023/109710

Kind Code:

A1

Abstract:

A permission hierarchy-based method and system for sharing and reconstructing a secret image. The method comprises: acquiring a secret image, and setting related parameters of the secret image according to a permission hierarchy-based image secret sharing method (S101); sharing the secret image according to a Chinese remainder theorem method to obtain shadow images, the shadow images comprising core shadow images and non-core shadow images (S102); and selecting a preset number of core shadow images and non-core shadow images for reconstruction, so that the secret image can be reconstructed, wherein the preset number is not less than a second parameter, and the number of core shadow images comprised in the preset number of images is equal to a first parameter (S103). The core shadow images and the non-core shadow images are obtained by means of the Chinese remainder theorem-based and permission hierarchy-based method for sharing a secret image, so that a secret image sharing process is securer; an original secret image can be losslessly reconstructed by means of the core shadow images and the non-core shadow images which satisfy a certain reconstruction condition, so that the recovery process of the original secret image is simpler.

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Inventors:

LIU ZUQUAN (CN)
ZHU GUOPU (CN)
CHANG JIE (CN)

Application Number:

PCT/CN2022/138201

Publication Date:

June 22, 2023

Filing Date:

December 09, 2022

Export Citation:

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Assignee:

SHENZHEN INST ADV TECH (CN)
SHENZHEN INST OF ADV TECH CAS (CN)

International Classes:

G06T1/00

Foreign References:

CN114418818A	2022-04-29
CN106980791A	2017-07-25
CN103414839A	2013-11-27
AU2021104272A4	2021-09-09
US20190213711A1	2019-07-11
CN111177746A	2020-05-19

Other References:

"Master's Thesis", 1 March 2018, NORTH CHINA ELECTRIC POWER UNIVERSITY, CN, article LIU, ZUQUAN: "Research on Image Secret Sharing Method with Essential Participants", pages: 1 - 60, XP009546186

Attorney, Agent or Firm:

BEIJING ZHONG XUN TONG DA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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