Share Email Print

Journal of Electronic Imaging

Content authentication for printed images utilizing high capacity data hiding
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

Authentication of content in printed images poses a challenge that cannot be addressed by conventional digital signature schemes because under the analog transport provided by the printing channel the verifier does not have access to the original digital content in pristine form. We present a method for cryptography-based authentication of the content in printed images that also provides the capability for identifying localized changes made by informed malicious attackers—key functionality that is missing in print scan robust hashes that have traditionally been used for print content authentication. The proposed method operates by embedding, within the printed image, an authentication signature that consists of an encrypted thumbnail of the image using a high capacity data hiding method for halftone images. To authenticate the content, the embedded signature is extracted from a scan of the printed image and, after decryption, compared with the printed content. An implementation of the method that incorporates human or automated verification and identifies potential local tampering by informed malicious attackers is developed and successfully demonstrated.

Paper Details

Date Published: 26 July 2013
PDF: 14 pages
J. Electron. Imag. 22(3) 033006 doi: 10.1117/1.JEI.22.3.033006
Published in: Journal of Electronic Imaging Volume 22, Issue 3
Show Author Affiliations
Orhan Bulan, Univ. of Rochester (United States)
Gaurav Sharma, Univ. of Rochester (United States)

© SPIE. Terms of Use
Back to Top