Word document data transfer based on digital watermarking

Word document data transfer based on digital watermarking is a method for protecting the work document information with secret, belonging to the field of computer information security. The invention aims to protect the security and the integrity of the information of the document with secret and prevent reading, deleting, copying, duplicating and editing the information of the document with secret without authorization. The invention adopts the digital watermarking and data transfer technology, so that the user, without authorization, can not read the real document contents but read a document with information without secret, which is generated by a Hash mapping table. Therefore, the document without secret generated by the generated Hash mapping table hides the information of the document with secret. The invention is convenient to operate, high in stability and security and has broad prospect in the field of protecting the information of the word document with secret.