Mobile DRM system based on a three-step user authentication process

With the development of communication network technology, many studies are being conducted on content protection techniques in the mobile digital contents area as well. In this paper, a mobile DRM system is presented for protection of digital contents based on a three-step authentication process. In this approach, we constructed a secure digital contents distribution system through a three-step user authentication process. For robust user authentication, we reinforced the security of the contents using the AES algorithm in the first and second authentication processes.