AN ENCRYPTED TRANSMISSION METHOD AND EQUIPMENT SYSTEM FOR PREVENTING COPYING THE DATA RESOURCE

摘要

A method and system of copy prevented encrypted transmission of data resources are provided by the present invention. The method includes the following steps: a client apparatus sends a file downloading request for a data file to a network server. The network server transmits an invoke request to a data resource server. The data resource server transmits the data file to the network server; after performing a third encryption on the data file, the network server transmits the encrypted data file to the client apparatus via a network. The client apparatus decrypts the data file upon receipt of the data file. The system includes a server apparatus and a client apparatus, wherein the client apparatus includes a decryptor and a read apparatus; the server apparatus includes an encryptor and a data file storage, the encryptor is used for encrypting the data file and transmitting a corresponding decryption key for the client apparatus. The present invention improves data file transmission security and decreases the possibility of copying and decrypting the data file.