Asymmetric Fragile Watermarking Using a Number Theoretic Transform

Hideaki TAMORI; Tsuyoshi YAMAMOTO

doi:10.1587/transfun.E92.A.836

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

Online ISSN : 1745-1337
Print ISSN : 0916-8508

Special Section on Latest Advances in Fundamental Theories of Signal Processing

Asymmetric Fragile Watermarking Using a Number Theoretic Transform

Hideaki TAMORI, Tsuyoshi YAMAMOTO

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Keywords: number theoretic transform, asymmetric watermarking, fragile watermarking, image authentication

JOURNAL RESTRICTED ACCESS

2009 Volume E92.A Issue 3 Pages 836-838

DOI https://doi.org/10.1587/transfun.E92.A.836

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Abstract

We propose an asymmetric fragile watermarking technique that uses a number theoretic transform (NTT). Signature data is extracted from a watermarked image by determining correlation functions that are computed using the NTT. The effectiveness of the proposed method is evaluated by simulated detection of altering.

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