Video Authentication Using Temporal Wavelet Transform

´Robust´ video-authentication schemes are strongly felt necessary in recent times for verification of video-data integrity and authenticity. These schemes should enable the originator of a video to provide the receiver with means by which the origin of the video can be authenticated, and the receiver can verify that the visual content has not been modified. This paper presents a new video-authentication scheme that generates the message authentication code (MAC) for a group of frames (GOF) using coefficients from the last but one high-pass band at full level of temporal-wavelet decomposition. Experimental results show robustness of the proposed scheme to common content-preserving manipulations while detecting malicious manipulations.