A Secure Image Authentication Algorithm with Pixel-Level Tamper Localization (TA-P5)

Author(s) : Jinhai Wu (Tsinghua Univ., China) Bin Zhu (Microsoft Research Asia, China) Shipeng Li (Microsoft Research Asia, China) Fuzong Lin (Tsinghua Univ., China)

Abstract : In this paper, we use a generalized model for all the previously proposed pixel-wise authentication schemes. Then we show how this generalized model can be compromised with an oracle attack. This motivated us to develop a novel authentication scheme to be described here. The new scheme is designed to detect any changes to a signal .It consist of two mechanisms dedicated to authenticity verification for a signal and localization of tampered pixels, respectively. The scheme is secure yet maintains the tampering localization as a pixel-wise scheme. Experimental results are reported to show the accuracy of the locations of the tampered pixels reported by the proposed scheme.

Menu