Digital watermark is perceptually invisible information embedded in the video. This embedding is done by an encoder using a secret key. The watermark can carry information about owner or recipient of the video or the video itself or some additional information like video caption, date etc

We enunciate the need for watermarking database relations to deter their piracy, identify the unique characteristics of relational data which pose new challenges for watermarking, and provide desirable properties of a watermarking system for relational data. A watermark can be applied to any

Digital watermarks have recently been proposed for the purposes of copy protec-tion and copy deterrence for multimedia content. In copy deterrence, a content owner (seller) inserts a unique watermark into a copy of the content before it is sold to a buyer. If the buyer sells unauthorized copies

unique watermark into the encrypted flows by slightly adjusting the timing of selected packets. The unique watermark that is embedded in the encrypted flow gives us a number of advantages over passive timing based correlation in resisting timing perturbations by the attacker.

. By injecting unique watermark into the inter-packet timing domain of a packet flow, we are able to make any sufficiently long flow uniquely identifiable even if 1) it is disguised by substantial amount of

-governance implementation requires all digital documents issued by the government is protected from illegal attacks attempting to modify the original contents. This paper proposes a method for uniquely watermarking images, including photographs and biometric images collected from the public by various government agencies

information unique to the copyright owner, the creator of the document or the authorized consumer. This paper presents various watermark attack. Watermark attack is any processing (ability of unauthorized users) that may remove, detect and estimate, write or modify the raw watermarking bits (watermark

Abstract — The rapid growth of digital multimedia technologies brings tremendous attention to the field of digital watermarking. One application for digital watermarking is fingerprinting. The owner or the distributor of the multimedia data can insert unique watermarks into copies for different

In this paper we describe a scheme in which each receiver of a multicast session receives a stream with a different, unique watermark, while still retaining the scalability of multicast. The watermarked streams can be used to trace those users who make unauthorized copies of a stream

The rapid growth of digital multimedia technologies brings tremendous attention to the field of digital watermarking. The owner or the distributor of the digital images can insert unique watermark into copies for different customers or receivers, which will be helpful to identify the source