A Fragile Digital Image Authentication Scheme Inspired by Wet Paper Codes

Article type: Research Article

Authors: Chang, Chin-Chen | Chou, Yung-Chen

Affiliations: Department of Information Engineering and Computer Science, Feng Chia University, Taichung 40724, Taiwan, R.O.C. [email protected] | Department of Computer Science and Information Engineering, Asia University, Taichung 41354, Taiwan, R.O.C. [email protected]

Note: [] Address for correspondence: No. 100 Wenhwa Rd., Seatwen, Taichung 40724, Taiwan, R.O.C.

Abstract: Image authentication is an important research topic of maintaining the integrity of digital image contents. Fragile image authentication is the technique for achieving the goal of image content integrity maintenance. This article presents a fragile image authentication scheme based on the concept of wet paper codes. The proposed scheme modifies dry pixels on an image to conceal an image signature. The proposed authentication scheme can exactly detect the tampered area on a tampered image. For saving computation cost of signature embedding, an exclusive-or operation is used in the proposed authentication scheme. The experimental results show that the proposedmethod not only has good visual quality of an authorized image but also successfully detects tampered areas on a tampered image.

Keywords: Data hiding, image authentication, signature, wet paper codes

DOI: 10.3233/FI-2009-0002

Journal: Fundamenta Informaticae, vol. 90, no. 1-2, pp. 17-26, 2009