… Although authentication of multimedia content can be done through conventional … which
the multimedia content needs special hardware for copying and viewing, a digital watermark can …

… • Robustness describes if the watermark can be reliably detected after media operations.
We emphasize that robustness does not include attacks on the embedding scheme that are …

… Therefore, a digital watermark is a message that is embedded in the digital media (audio,
video, text, or … in the form of a digital watermark into digital media is called digital watermarking. …

… a provably secure authentication scheme for digital media files … fragile watermarks to embed
a digital signature of the media. … 2, we introduce media authentication schemes in Section 3. …

… of a graphical watermark database which will provide the necessary data for authentication
and copyright protection of digital media, and other domain specific studies of the watermark. …

… , digital watermarking has been proposed as a last line of defence. A digital watermark is
an … The watermark is imperceptible both perceptually and statistically. Current watermarking …

… Fragile/semi-fragile digital watermarking is about embedding a small … watermark, into the
host media so that the watermark can be extracted later from the marked media to authenticate …

… invisible spatial domain watermark insertion algorithm for which we show that the watermark
can be recovered, even if the attacker tries to manipulate the watermark with the knowledge …

… the authentication process … digital signature must introduce memory by relating several
image coefficients with the etching of a single watermark bit rather than encoding the watermark …

… a watermarked work. In the past, the security of proposed image authentication schemes based
on invertible watermarks … attacks against watermark-based image authentication systems …