Robust and efficient authentication of video stream broadcasting

We present a novel authentication scheme that leverages satellite link characteristics such as low bit error rate and no packet reordering. Our approach combines watermarking and signature amortization; the computation overhead experienced on receiver sums up to two hash per block of pictures, and only one digital signature verification for the whole received stream. We propose a theoretical approach to evaluate the algorithm effectiveness, and we present simulation results to validate the proposed authentication algorithm.