Asymmetric Fragile Watermarking Using a Number Theoretic Transform
Hideaki Tamori, Tsuyoshi Yamamoto · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2009
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.