Prevention Of Watermarking Attacks Using Cryptography Method

Abstract: As the need for information over network is high the security for such information is necessary when the information is shared over network or retrieved from network. Media files which are shared in networking sites and other areas must be highly protected to prevent files from hackers. Watermarking is a prevention technique used for preventing media files like images, audio & video files etc. The paper shows the detailed information about providing authentication or security for media data which are shared over internet. This research provides the information about the file encryption using AES algorithm and watermarking using DCT Algorithm. The image is taken for testing and the study shows the idea of using combination of cryptographic algorithm and watermarking algorithm in securing media informations. The image is encrypted and then the enciphered or encrypted image embedded into cover file and finally covered image is watermarked. The result of the process is watermarked image.

Keywords: Watermarking, Types of Watermarking, Digital Watermarking, Watermarking Attacks, Discrete Cosine Transform technique (DCT), AES Algorithm and its operations.