Netinfo Security ›› 2015, Vol. 15 ›› Issue (4): 62-67.doi: 10.3969/j.issn.1671-1122.2015.04.011

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A Survey of Digital Passive Lossless Forensics on Forged and Altered Document

SHANG Shi-ze1, KONG Xiang-wei1(), YOU Xin-gang1,2   

  1. 1. School of Information and Communication Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
    2. Beijing Institute of Electronic Technology and Application, Beijing 100091, China
  • Received:2015-01-15 Online:2015-04-10 Published:2018-07-16

Abstract:

The examination of forged and altered document is an important part in judicial expertise. The traditional examination methods need professional testers and devices, the disadvantages include high cost, long testing time, damage on the documents, etc. In recent years, the digital passive lossless forensics on forged and altered document has been developed which only uses scanner and computer. In this paper, we first introduce the life-cycle of document and its forging and altering methods. Then, we summarize the passive lossless forensics on forged and altered document, and describe the technologies on device identification, copy paper identification and authenticity detection, respectively. We give a detailed description on the characteristics introduced by devices and altering methods, and their forensics methods. Finally, we describe the questions and challenges on digital passive lossless forensics on documents.

Key words: forged and altered document examination, digital passive lossless forensics, device identification, authenticity detection, copy paper identification

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