Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/6846
Title: Identification and recovery of JPEG files with missing fragments
Authors: Sencar, Hüsrev T.
Memon, Nasir
Keywords: File recovery
Fragmentation
JPEG/JFIF
Huffman code tables
Issue Date: 2009
Publisher: Elsevier Sci Ltd
Source: 9th Annual DFRWA Conference 2009 -- AUG 17-19, 2009 -- Montreal, CANADA
Abstract: Recovery of fragmented files proves to be a challenging task for encoded files like JPEG. In this paper, we consider techniques for addressing two issues related to fragmented JPEG file recovery. First issue concerns more efficient identification of the next fragment of a file undergoing recovery. Second issue concerns the recovery of file fragments which cannot be linked to an existing image header or for which there is no available image header. Current file recovery approaches are not well suited to deal with these practical issues. In addressing these problems, we utilize JPEG file format specifications. More specifically, we propose a technique based on bit sequence matching to identify fragments created by the same Huffman code tables. We also address the construction of a pseudo header needed for recovery of stand-alone file fragments. Some experimental results are provided to support our claims. (C) 2009 Digital Forensic Research Workshop. Published by Elsevier Ltd. All rights reserved.
URI: https://doi.org/10.1016/j.diin.2009.06.007
https://hdl.handle.net/20.500.11851/6846
ISSN: 1742-2876
1873-202X
Appears in Collections:Bilgisayar Mühendisliği Bölümü / Department of Computer Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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