Design Scheme of Copyright Management System based on Cryptography and Digital Watermarking

In recent years, piracy has become a common practice in the film and gaming industry. Previously, films were pirated, copied and distributed using compact disks (CDs), but now pirated content is shared online. In the gaming industry, competitors and fans often copy textures, characters, maps, and other content from each other. The proposed method aims to address the issue of piracy that occurs within the industry by proposing a security framework that uses cryptography for encryption and digital watermarking techniques for identification. Content creators usually have to share their work with other developers or creators in a work environment, which makes the content vulnerable to piracy. The aim of the proposed work is to put the created content into this security framework, encrypt it, and embed an invisible watermark specific to that user when sharing it with others. If any other creator needs that content, they can request it through the license server, and it will be decrypted using the keys from the server. The proposed method ensures that leaked content will have the watermark, which can help identify the person who leaked it, be it a city map in a game or a scene from a movie. This article will explain the methodologies used in this approach in detail.