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High-capacity image encryption domain information hiding method

A technology of information hiding and encryption domain, which is applied in image data processing, image data processing, instruments, etc., to achieve the effect of simple technical solution and improved embedded capacity

Active Publication Date: 2020-06-19
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increasing demand of users for the security of their own private data, there are still many problems in the aspects of reversibility, embedding capacity, and algorithm execution efficiency of encrypted domain information hiding, which need further research.

Method used

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  • High-capacity image encryption domain information hiding method
  • High-capacity image encryption domain information hiding method
  • High-capacity image encryption domain information hiding method

Examples

Experimental program
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Effect test

Embodiment Construction

[0065] The present invention will be further described in detail in conjunction with specific embodiments now.

[0066] In this embodiment, Matlab is used as the software platform to realize the design of the scheme of the present invention by programming; the standard test image "Lena" of 512×512 is selected as the carrier image in the implementation process, and the threshold value T=8 is assumed.

[0067] A large-capacity image encryption domain information hiding method, the specific operation steps are as follows:

[0068] Ⅰ. Calculation of prediction difference and generation of label map, including the following steps:

[0069] The first step is to read in a carrier image I with a size of 512×512;

[0070] The second step is the calculation process of the forecast difference:

[0071] (1) In the carrier image, mark the current pixel as x(i,j);

[0072] (2) Use the Median Edge Detector to calculate the predicted value px(i,j) of the current pixel, as shown in formula ...

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Abstract

The invention belongs to the technical field of information hiding, and aims to provide a high-capacity encrypted domain information hiding method capable of separating a carrier image decryption process from a secret data extraction process. According to the specific technical scheme, the high-capacity image encryption domain information hiding method is composed of the following four parts: 1, calculation of a prediction difference value and generation of a label map; 2, encrypting a carrier image; 3, storing a prediction difference value and embedding secret information; 4, reversible recovery of the carrier image and lossless extraction of secret information; the whole technical scheme is simple and easy to implement, information such as user copyright, identity authentication or content retrieval can be hidden in the encrypted image according to different requirements of a user for image protection, and management of copyright protection, security authentication, retrieval, classification and the like of the image is achieved.

Description

technical field [0001] The invention relates to the technical field of information hiding, and specifically relates to a large-capacity image encryption domain information hiding method. Background technique [0002] With the popularization of cloud computing, more and more image data involving personal privacy are stored and processed on open cloud platforms, such as credit records, medical records, court records, private property records, military and commercial information, etc. How to protect the security of these private data has become one of the most important and urgent research topics at present. Traditional encryption algorithms can convert user data into ciphertext for transmission and storage in the network, thereby hiding the content of user data well; information hiding technology can hide certain secret information (such as copyright, identity authentication, etc.) In the ciphertext, so as to realize the management of ciphertext data retrieval, classification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00G06F21/60
CPCG06T1/0021G06F21/602Y02D30/50
Inventor 刘丽王安红李志宏吕琪韩宇峥
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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