CRYPTOGRAPHY IN DIGITAL MULTIMEDIA BASED ON VLSI

Abstract

Watermarking in digital cryptography is a technique which allows somebody else to add hidden copyright notices or otherVerification messages to digital audio, video, or image signals and documents. Such a message is a group of bits describing information pertaining to the signal or to the author of the signal (name, place, etc.). The technique takes its name from watermarking of paper or money as a security measure. There are different techniques used to perform watermarking. Various comprehensive investigations on the existing watermarking technologies have been accomplished. In the current paper we are going to present the different review of the video watermarking. In this paper we proposed FPGA Implementation for DCT based video watermarking system.