چکیده (انگلیسی):

Digital watermarking is a copyright protection technique used to embed specific data in a cover file to prevent illegal use. In this research invisible digital watermarking based on the text information contained in a webpage has been proposed. Watermarks are based on predefined semantic and syntactic rules, which are encrypted and then converted into whitespace using binary controlled characters before embedding into a webpage. Structural means of HTML (Hyper Text Markup Language) are used as a cover file to embed the formulated watermarks. Proposed system has been validated against various attacks to find optimum robustness.