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Encryption domain reversible information hiding method based on dual binary tree extension and public key encryption

A public key encryption and double binary tree technology, which is applied in homomorphic encryption communication, image communication, secure communication devices, etc., can solve problems such as unguaranteed, long ciphertext extension, and good image quality

Active Publication Date: 2019-10-15
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the public key encryption used by the current existing methods is that the ciphertext extension is too long and cannot guarantee good image quality at high embedding rates

Method used

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  • Encryption domain reversible information hiding method based on dual binary tree extension and public key encryption
  • Encryption domain reversible information hiding method based on dual binary tree extension and public key encryption
  • Encryption domain reversible information hiding method based on dual binary tree extension and public key encryption

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Embodiment Construction

[0086] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0087] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily defined to include all aspects of the present invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0088] combine figure 1 , figure 2 , the present invention refers to a method for reversible information hiding in...

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Abstract

The invention discloses an encryption domain reversible information hiding method based on dual binary tree extension and public key encryption. The method comprises the steps of performing pixel overflow prevention preprocessing on an original image; reducing pixels on the two sides of the pixel histogram of the original image according to the number of layers of the double binary tree; dividingthe original image into a plurality of 2 * 2 first image blocks; encrypting an original image by adopting a homomorphic encryption public key encryption system, embedding secret information into a ciphertext image by utilizing a dual-binary tree traversal and prediction error extension method, and achieving image recovery and information extraction in a ciphertext domain and / or a plaintext domainaccording to a data hiding key and a decryption key. According to the encryption domain reversible information hiding method based on dual binary tree extension and public key encryption, the aspects of encryption cost, secret information embedding capacity, decrypted image quality and the like are greatly improved.

Description

technical field [0001] The present invention relates to the field of encrypted domain reversible information hiding technology and image content security technology, in particular to an encrypted domain reversible information hiding method based on double binary tree expansion and public key encryption. Background technique [0002] With the rapid development and application of cloud computing, a large amount of image information is stored on cloud servers, and Internet users can easily and quickly access media information on cloud storage, resulting in a rapid increase in the number and utilization of images. However, in the open and complex cloud environment, the protection of image content has become increasingly prominent. In order to realize information hiding and lossless recovery of carrier image in cloud environment, reversible information hiding technology in encrypted domain is proposed. In this technology, the image provider encrypts the image and uploads it to t...

Claims

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Application Information

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IPC IPC(8): H04N19/122H04N19/176H04N19/182H04N19/467H04N19/96H04L9/00
CPCH04L9/008H04N19/122H04N19/176H04N19/182H04N19/467H04N19/96
Inventor 熊礼治董丹萍
Owner NANJING UNIV OF INFORMATION SCI & TECH
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