Minimum distortion information hiding method and system based on lattice theory and medium

An information hiding and minimal technology, applied in the field of information hiding, can solve the problem that the middleman cannot detect the existence, and achieve the effect of saving calculation amount and high calculation efficiency

Pending Publication Date: 2022-01-18
JINAN UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, ECG steganography in the care system would hide data collected from body sensors within the ECG signal so that a man in the middle would not even be able to detect its presence

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
  • Minimum distortion information hiding method and system based on lattice theory and medium
  • Minimum distortion information hiding method and system based on lattice theory and medium
  • Minimum distortion information hiding method and system based on lattice theory and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Considering that the embedded data points do not necessarily have to be quantized to a grid for correct decoding in the absence of additive white noise attacks, moving the carrier signal to any point inside the Voronoi region of the grid is sufficient for subsequent decoding . Based on this idea, the present invention proposes a lattice-based minimum distortion information hiding method, which can realize minimum distortion within the framework of lattice-based information hiding methods. The present invention does not quantize the carrier information into lattice points, but chooses one of two moving modes according to different embedded information, that is, the carrier signal either remains static or only moves to the boundary of the Voronoi region of the lattice point. This design is feasible for any lattice base and any specified information rate.

[0054] There are many ways to move to the Voronoi area of ​​the grid point. The present invention proposes a simple ...

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 discloses a lattice theory based minimum distortion information hiding method and system and a medium. The method comprises the following steps of: obtaining a carrier signal vector, an embedded message and a group of nested lattices in an N-dimensional space through data initialization; calculating a lattice point closest to the carrier signal vector according to different secret information; calculating the difference value between the grid point and the carrier signal vector, and determining the position of the carrier information after the information is embedded; embedding a to-be-embedded message into the carrier signal vector and transmitting the to-be-embedded message; and extracting the secret information from the secret-containing carrier. According to the method, the carrier signal is moved into the Voronoi region of the lattice point in a minimum distance manner, so that the distortion caused by embedding is minimum while the embedding rate which is the same as that of quantization index modulation can be ensured, and the method is suitable for application scenes which have low requirements on robustness and pursue low distortion. In addition, according to the method, the movement distance is calculated by moving to the Packing space boundary of the grid point and utilizing the Packing radius, so that the calculation amount is saved, and the method has relatively high calculation efficiency.

Description

technical field [0001] The invention belongs to the technical field of information hiding, and in particular relates to a minimum distortion information hiding method, system and medium based on lattice theory. Background technique [0002] Quantization index modulation is a commonly used information hiding algorithm. The algorithm first modulates the index value of the quantizer according to the watermark information, and then quantizes the carrier signal according to the quantizer corresponding to the index value. Its essence is to adjust the carrier value to the specified quantization level, so as to obtain higher robustness. But in some applications, robustness is not a primary concern. For example, electrocardiogram steganography in the care system would hide data collected from body sensors within an electrocardiogram signal so that a man-in-the-middle would not even be able to detect its presence. Usually, the attack is passive. For this application scenario, info...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06F21/64
CPCG06F21/602G06F21/64
Inventor 吕善翔林洁妮覃俊仁娄舒婷徐萌许丽卿谭晓青向岷
Owner JINAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products