The Copyright Protection Of Electronic Books Based On The Usb Key

The issue uses USB KEY easy to carry and the only USBKEYID in the world feature combined with DES encryption algorithm, protect ebook from piracy. Because the decryption key is sent not by the network and stop hacker access to the decryption key via the network. The password is encrypted by MD5 algorithm. The issue has three ways copyrighted, first only the legitimate user can open the reader. Second different legitimate users can not open their ebook with each other. Third the legitimate user only has to read and user experience features such as:change the font type, color, size, keyword search and other functions without copy, paste, modify and so on. The security of my copyright protection system in ebook safeguards the interests of authors and publishers.