Asymmetric Fragile Watermarking Using a Number Theoretic Transform

Hideaki TAMORI, Tsuyoshi YAMAMOTO
2009 IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences  
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. key words: number theoretic transform, asymmetric watermarking, fragile watermarking, image authentication
doi:10.1587/transfun.e92.a.836 fatcat:pu6nc4lup5dibees2ioo7w7daa