英语翻译在电子图书版权保护应用中,将代表著作权人身份的特定信息（即数字水印）,按照某种方式植入电子图书中,在产生版权纠纷

In the practice of copyright protection of e-books, certain information(e。g。 digital watermark) of the copyright owner is embedded into the e-book in a certain way。 When a copyright dispute arises, the watermark can be extracted with relevant algorithm designed by the lawful publisher/vendor, so as to certify the title of right, find out the channel of disclosure, insure the copyright owner against menace of illegal copies。Please write a program with C++ in A environment, which embeds and extracts specific type of watermark into and from e-books saved in Word document format。