Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ciphertext domain multi-bit reversible information hiding method

An information hiding, multi-bit technology, applied in the field of multi-bit reversible information hiding in the ciphertext domain, which can solve the problems of distortion of decryption results and primary problems.

Inactive Publication Date: 2016-06-01
ENG UNIV OF THE CHINESE PEOPLES ARMED POLICE FORCE
View PDF10 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing ciphertext domain reversible information hiding technology has many difficulties and problems in terms of effectively ensuring large-capacity data embedding, reversible recovery of carrier data, and undetectability under the premise of realizing separable steganography, because modern encryption algorithms require plaintext The minimal change of will also spread to the entire ciphertext space, and the design of the reversible algorithm is often independent of the encryption algorithm, so that the more encrypted data is modified during the embedding process, the greater the distortion of the decryption result will be
In addition, the encrypted data has the characteristics of uniform distribution in the statistical sense. The existing reversible steganography algorithm in the ciphertext domain ensures that the statistical characteristics remain unchanged before and after embedding, that is, the research on the ability to resist steganalysis is still relatively elementary.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ciphertext domain multi-bit reversible information hiding method
  • Ciphertext domain multi-bit reversible information hiding method
  • Ciphertext domain multi-bit reversible information hiding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0051] The invention discloses a multi-bit reversible information hiding method in a cipher text domain. By re-encoding the cipher text data based on the R-LWE (Ring-Learning With Errors) public key cryptographic algorithm, users can embed multi-ary information in the cipher text. For the ciphertext after embedding information, the user can effectively extract the hidden information by using the steganographic key, and recover the data before encryption without error by using the decryption key, and the extraction process can be separated from the decryption process.

[0052] Specifically include the following steps.

[0053] Step 1, parameter setting and data preprocessing.

[0054] (1) Select a security parameter k>1 which is a natural number, n=2 k , ring R q All elements and operation ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a ciphertext domain multi-bit reversible information hiding method capable of effectively ensuring large volume embedment of data, reversible recovery of carrier data and undetectability of embedded information on the premise of meeting separable steganography. The method comprises the following steps: 1, parameter setting and data pre-processing; 2, encryption and information embedment; and 3, decryption and information extraction. By recoding ciphertext data based on an R-LWE (Ring Learning with Errors) public key cipher algorithm, a user can embed multi-ary information based on ciphertext domain operation to realize data encryption. After the information is embedded, the user can effectively extract the hidden information with a steganographic key and recover the data before encryption without errors by using a decryption key. Compared with the existing ciphertext domain steganography, the method has the advantages that error-free decryption of the embedded ciphertext and effective extraction of the hidden information can be realized, and the decryption and extraction processes are separable.

Description

technical field [0001] The invention relates to information hiding, information encryption and ciphertext domain data processing technology, in particular to a multi-bit reversible information hiding method in ciphertext domain. Background technique [0002] Since its birth in the 1990s, information hiding has played an increasingly important role in the field of information security. However, most steganography algorithms permanently damage the data in the original carrier signal while embedding secret information, and introduce certain distortion. However, these distortions are unacceptable in some applications that require high data authentication and restore the original carrier without distortion, such as remote medical diagnosis, encrypted data annotation in the cloud environment, military and legal affairs, etc. In military, medical and other fields, not only secret information has extremely high value, but also original carrier signal is indispensable. For example,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L9/08G06T1/00
CPCG06T1/0021H04L9/0844H04L9/0861
Inventor 张敏情柯彦苏婷婷段俊逸
Owner ENG UNIV OF THE CHINESE PEOPLES ARMED POLICE FORCE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products