Method and device for storing and transmitting information using digital images

A digital image and information transmission technology, applied in the field of information transmission, can solve the problem of low security in the application of information hiding technology, achieve the effect of effective transmission and storage of information, and solve the problem of forgery

Active Publication Date: 2017-03-29
AEROSPACE INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the information hiding technology used for integrity protection, the original secret information used to verify the integrity and the digital carrier embedded in the original secret information are stored and transmitted separately, which makes the original secret information and the digital carrier containing the secret information forged become possible, so that the application security of information hiding technology is not high, and there is no method to solve this problem in the prior art

Method used

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  • Method and device for storing and transmitting information using digital images
  • Method and device for storing and transmitting information using digital images
  • Method and device for storing and transmitting information using digital images

Examples

Experimental program
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Embodiment 1

[0020] The method for storing and transmitting information by using a digital image in the embodiment of the present invention includes two processes of embedding information in the digital image and extracting information from the digital image. The foregoing information is usually secret information, and the following uses secret information as an example to illustrate the embodiments of the present invention.

[0021] The specific processing flow of a method for embedding secret information in a digital image provided by this embodiment is as follows figure 1 As shown, the following processing steps are included:

[0022] Step 11, the embodiment of the present invention selects a digital image as a digital carrier embedded with secret information.

[0023] A color digital image can be represented by a three-dimensional grayscale image. For example, a color digital image can be represented in RGB three-dimensional space, and any dimension can be considered as a grayscale im...

Embodiment 2

[0044] The specific processing flow of a method for extracting secret information from digital images provided by this embodiment is as follows: figure 2 As shown, the following processing steps are included:

[0045] Step 21. After receiving the pixel value sequence of the above-mentioned digital image containing secret information, the receiver extracts the first 4 bits of the embedded data sequence and calculates the length of the embedded data sequence according to the user password, and converts the above user password into and calculates The obtained embedded data sequence is a binary password sequence consisting of 0 and 1 bits of the same length, and then, according to the specific numbers (ie 0 or 1) in the above password sequence, determine the 8 of each pixel value in the above pixel value sequence in turn. The location and specific number of embedded secret information in a binary number of bits.

[0046]For example, if the first number in the above password sequ...

Embodiment 3

[0055] This embodiment provides a device for storing and transmitting secret information using digital images, and its specific structure is as follows: image 3 As shown, the following modules are included:

[0056] The data decomposition module 31 is used to decompose the digital image data into a sequence of pixel values, convert each pixel value in the sequence of pixel values ​​into a binary number with a set number of bits, and convert the secret information into a binary number to be embedded. data sequence;

[0057] A data mapping module 32, configured to correspond to the numbers to be embedded in the data sequence and the pixel values ​​in the pixel value sequence according to the set data mapping rules;

[0058] The data embedding module 33 is configured to embed each number in the data sequence to be embedded into a binary number corresponding to a corresponding pixel value according to a set data embedding rule.

[0059] Specifically, the data decomposition modu...

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Abstract

The embodiment of the invention provides a method and a device for utilizing a digital image to store and transmit information. The method mainly comprises that: digital image data are decomposed into pixel value sequences, each pixel value in the pixel value sequences is converted into a binary number with a preset number of bits, and information is converted into binary data sequences to be embedded; numbers in the data sequences to be embedded and the pixel values in the pixel value sequences are corresponded according to a preset data mapping rule; and each number in the data sequences to be embedded is embedded into the corresponding binary number of the corresponding pixel value according a preset data embedding rule. Hiding and encryption technologies are combined so that the secret information is stored in the digital image and integrity of the secret information and the digital image is protected. Therefore, a problem of forgery caused by separation of the secret information and digital carriers comprising the secret information in information hiding for realizing integrity of the digital image can be solved.

Description

technical field [0001] The invention relates to the technical field of information transmission, in particular to a method and device for storing and transmitting information by using digital images. Background technique [0002] Information hiding technology is a covert communication technology that uses the redundant features of digital carriers to add secret information to digital carriers without being noticed. The main purpose of information hiding technology is to use the digital carrier as the medium to hide secret information and prevent it from being illegally extracted. [0003] In the information hiding technology used for integrity protection, the original secret information used to verify the integrity and the digital carrier embedded in the original secret information are stored and transmitted separately, which makes the original secret information and the digital carrier containing the secret information forged become possible, so that the application securi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00H04L9/06H04N5/913
Inventor 舒南飞于志强唐凌吴渊丁瑶王杰斌王芳
Owner AEROSPACE INFORMATION
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