Digital forensics-oriented anomaly steganalysis method and system

Abstract

The invention discloses a digital forensics-oriented anomaly steganalysis method and a system. The method comprises the following steps: 1, obtaining to-be-obtained analyze data in a detection material; 2, carrying out analysis of anomaly on the to-be-obtained analyze data; 3, judging whether the to-be-obtained analyze data is abnormal or not; 4, marking anomaly data as suspicion, moving the suspicion to an observation region to be isolated, and generating an anomaly detection report; 5, carrying out anomaly steganalysis on the to-be-obtained analyze data or the suspicion; 6, judging the probability of the data object analyzed in 5 with abnormal steganalysis; and 7, generating an anomaly steganalysis evaluating report and revealing an anomaly analytic result and an anomaly steganalysis evaluating report. The method disclosed by the invention jointly applies a characteristic analysis method and a method for statistical analysis method to carry out anomaly steganalysis on the to-be-obtained analyze data, so that a digital forensics-oriented anomaly steganalysis scheme can be effectively satisfied, thereby improving the steganalysis speed in the digital forensics process and enhancing the precision of steganalysis.

Description

technical field [0001] The invention belongs to the technical field of digital forensics, and in particular relates to an abnormal steganography detection and analysis method and system for digital forensics. Background technique [0002] The analysis process of digital forensics is a key step in forensics. In most cases, the abnormal steganographic detection and analysis process of forensic analysis data depends on the personal judgment and experience accumulation of forensic personnel, and some appraisers choose to use two or more steganographic methods. Writing analysis tools for forensics, however, the subjective judgment of forensics personnel and the irregularity of analysis tools are difficult to guarantee the objective authenticity of the digital forensics process. As a result, the availability and accuracy of forensic identification results are prone to disputes from various perspectives. [0003] As a countermeasure against steganography, the task of steganalysis ...

AI Technical Summary

Problems solved by technology

[0002] The analysis process of digital forensics is a key step in forensics. In most cases, the abnormal steganography detection and analysis process of forensic analysis data depends on the personal judgment and experience accumulation of forensic personnel, and some appraisers choose to use two or more steganographic methods. Writing analysis tools for forensics, however, the subjective judgment of forensics personnel and the irregularity of analysis tools are difficult to guarantee the objective authenticity of the digital forensics process

As a result, the availability and accuracy of forensic identification results are prone to disputes on various fronts

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