IJERT-EMS
IJERT-EMS

Image Authentication using JPEG Headers


Image Authentication using JPEG Headers
Authors : Parthiban. R
Publication Date: 10-04-2014

Authors

Author(s):  Parthiban. R

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol. 3 - Issue 4 (April- 2014)

e-ISSN:   2278-0181

Abstract

Evidence, in general is that which provides direct proof of the truth of an assertion. An obstacle in the digital evidence investigation is the investigator’s ability to determine whether the pictures in question have been altered and finding the true source of the image. It is evident that smart phones are becoming the main camera of choice by many people and JPEG is the most commonly used image format by mobile phones owing to high compression value and less memory consumption. A JPEG [10] image that is produced by a camera does not just contain a picture, it also has metadata associated in its header. Metadata provides information about the image. EXIF [3] is a standard which is commonly used in mobile devices to write metadata into images. In this paper, we propose a solution to identify the device, which uses the image metadata. The proposed method has two phases; the first phase will embed the hash value of the device’s IMEI into the JPEG metadata. Each device will be associated with unique IMEI [7] number hence by storing the hash of the IMEI to the image metadata we can uniquely identify the device from which the image was taken. Second phase is analysis of the metadata, during the analysis the device’s IMEI will be checked against the image metadata where the device’s IMEI is stored.

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