DocumentCode :
3193836
Title :
Security evaluation of a perceptual image hashing scheme based on virtual watermark detection
Author :
Zhou, Jiantao ; Au, Oscar C.
Author_Institution :
Department of ECE, Hong Kong University of Science and Technology, HK
fYear :
2011
fDate :
11-15 July 2011
Firstpage :
1
Lastpage :
6
Abstract :
This paper evaluates the security of a recently proposed perceptual image hashing scheme based on virtual watermark detection. Under the known-hash attack where the attacker has access to several image/hash vector pairs, we show that the task of estimating the virtual watermark sequences serving as the secret key can be formulated as a simple convex optimization problem, and hence, can be solved efficiently. More specifically, we demonstrate that satisfactory level of estimation accuracy of a watermark sequence of length m could be achieved from approximately 2 · m image/hash vector pairs on average. Experimental results using artificial data and real image data are also provided to verify the effectiveness of our proposed attack approaches.
Keywords :
Perceptual image hashing; convex optimization; image authentication; multimedia security;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia and Expo (ICME), 2011 IEEE International Conference on
Conference_Location :
Barcelona, Spain
ISSN :
1945-7871
Print_ISBN :
978-1-61284-348-3
Electronic_ISBN :
1945-7871
Type :
conf
DOI :
10.1109/ICME.2011.6011882
Filename :
6011882
Link To Document :
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