Collision in double random phase encoding
Guohai Situ, David S. Monaghan, Thomas J. Naughton, John T. Sheridan, Giancarlo Pedrini, and Wolfgang Osten
Opt. Commun. 281(20), 5122-5125 (2008)
© Elsevier.
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Abstract
Collision is a situation that occurs when two or more distinct inputs into a security system produce identical outputs, which is undesirable in some security applications. This is especially true of the applications
of watermarking and authentication. In this manuscript we present a study of the collision property of double random phase encoding. We show that one can produce meaningful collisions from the cyphertext of a watermark embedded in a host image by use of phase retrieval techniques.
Keywords: Double random phase encoding, Collision, Cryptanalysis, Phase retrieval.
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