Secure Digital Content Management in Library

With the advancement of digital technologies and networks, all kinds of digital contents are stored in library and the registered users can use them in an easy way. However, piracy becomes increasingly rampant as customers can easily duplicate and redistribute the received digital content to a large audience. Therefore, how to insure the digital data of library are appropriately used has become increasingly critical, especially considering the ease of manipulating of digital data. In this paper, we discuss the problem of how to protect the copyrighted library digital data from piracy.