The Open Cybernetics & Systemics Journal

2015, 9 : 456-463
Published online 2015 May 29. DOI: 10.2174/1874110X01509010456
Publisher ID: TOCSJ-9-456

Research on an Improved Algorithm for Image Authentication Signature AMAC

Yang Xinfeng and Wei Ke
School of Computer & Information Engineering, Nanyang Institute of Technology, Henan, 473004, P.R. China.

ABSTRACT

The IAS based on the robust signature is studied and an improved AMAC (approximate message authentication code) is proposed. In this method, all the invariable bits of the image block referring to the threshold strength of incidental manipulation are used to construct AMAC. To locate malicious manipulation, a hierarchical AMAC is constructed. The robustness under JPEG compression and AWGN is investigated and its effectiveness is demonstrated.

Keywords:

AMAC signature, image authentication, image edge, incidental manipulation, robust signature.