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Digital forensic image verification system

a verification system and digital technology, applied in the field of digital forensic image verification system, can solve the problems of inability to use evidence, inability to provide digital forensic technology whereby authenticity is verified, and difficulty in using sound and images, etc., to achieve the effect of greatly reducing the load applied in generating a first hash value by an imaging device and greatly reducing the load applied in generating a second hash value by an image storage devi

Inactive Publication Date: 2018-12-27
HANWHA TECHWIN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for verifying if an image has been tampered with using two hash values - one generated by the camera and one generated by the storage device. This reduces the processing load on the storage device and ensures quicker verification. The invention can help to prevent unauthorized access to images and improve security measures.

Problems solved by technology

As described above, in digital forensics, evidence cannot be used when it is not objectively proved that the evidence has not been forged or altered in collecting and analyzing the evidence.
Thus, it is difficult to verify the authenticity of the sound and the images during the transfer of the sound and the images from the image storage device to the system.
Furthermore, there is no digital forensic technology whereby authenticity is provided to verify forgery / alteration and conduct a backup using hash values by an imaging device and an image storage device.

Method used

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Experimental program
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first embodiment

[0047]FIG. 1 is a block diagram of a digital forensic image verification system according to an embodiment of the present disclosure. The digital forensic image verification system includes an imaging device 100 and an image storage device 200.

[0048]In more detail, the imaging device 100 includes an imaging unit 110, a first hash value generator 120, a muxing unit 130, and a transmitting unit 140 as illustrated in FIG. 2.

[0049]The imaging unit 110 of the imaging device 100 produces sound and an image.

[0050]The first hash value generator 120 of the imaging device 100 generates a first hash value for the sound and the image at intervals of a certain time.

[0051]For example, as illustrated in FIG. 3, when it is assumed that sound and an image are produced from 12:01:00 to 12:01:03 and the certain time is 1 second, the first hash value generator 120 may generate a 1-1 hash value from 12:01:00 to 12:01:01, a 1-2 hash value from 12:01:01 to 12:01:02, and a 1-3 hash value from 12:01:02 to 1...

second embodiment

[0088]Another embodiment of the present disclosure will be described with reference to FIG. 6. The digital forensic image verification system according to the present embodiment includes an imaging device 300 and an image storage device 400.

[0089]The imaging device 300 includes an imaging unit 310, a first hash value generator 320, and a transmitting unit 340.

[0090]The imaging unit 310 produces an image. However, embodiments are not limited thereto and the imaging unit 310 may produce sound together with the image.

[0091]The first hash value generator 320 generates a first hash value for a part of the image produced by the imaging unit 310. Thus, load applied to the first hash value generator 320 may be more reduced than when a first hash value for the entire image produced by the imaging unit 310 is generated.

[0092]As a method of generating a first hash value for a part of the image, which is produced by the imaging unit 310, by the first hash value generator 320, the first hash val...

third embodiment

[0101]A digital forensic image verification system according to the present embodiment is differentiated from the digital forensic image verification system according to the second embodiment, in terms of a first hash value generator and a second hash value generator. The present embodiment will be described with reference to FIG. 6. In the following description regarding the present embodiment, the first hash value generator and the second hash value generator are assigned the same reference numerals as those according to the second embodiment.

[0102]The digital forensic image verification system according to the present embodiment includes an imaging device 300 and an image storage device 400.

[0103]The imaging device 300 includes an imaging unit 310, a first hash value generator 320, and a transmitting unit 340. The image storage device 400 includes a receiving unit 410, a second hash value generator 420, and a controller 440.

[0104]The imaging unit 310 produces an image. However, e...

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Abstract

A digital forensic image verification system according to an embodiment of the present disclosure includes an imaging device having a imaging unit configured to produce an image, a first hash value generator configured to generate a first hash value for the image, and a transmitting unit configured to transmit the image and the first hash value; and an image storage device having a receiving unit configured to receive the image and the first hash value from the imaging device, a second hash value generator configured to generate a second hash value for the image, and a controller configured to compare the first hash value and the second hash value with each other.

Description

TECHNICAL FIELD[0001]The present disclosure relates to a digital forensic image verification system, and more particularly, to a digital forensic image verification system in which an imaging device which captures an image generates a first hash value and transmits it to an image storage device, and the image storage device generates a second hash value and verifies whether the image has been forged or altered by comparing the first hash value and the second hash value with each other.BACKGROUND ART[0002]Digital forensics is a branch of security service which is used to verify a fact occurring, based on digital materials stored in a digital medium such as a computer, and is related to collecting and analyzing scientific evidence used in a criminal investigation.[0003]As described above, in digital forensics, evidence cannot be used when it is not objectively proved that the evidence has not been forged or altered in collecting and analyzing the evidence. Thus, techniques for verifyi...

Claims

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Application Information

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IPC IPC(8): G06F21/64H04L9/32G06F11/14G06K9/00
CPCG06F21/64H04L9/3252H04L9/3242G06F11/1469G06K9/00926G06K2009/00946H04N21/2351H04N5/913H04N21/235H04N7/1675H04N7/167H04N5/77G06V40/50G06V40/155
Inventor KIM, WON-KUGSHIN, JIN-KYO
Owner HANWHA TECHWIN CO LTD
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