Bidirectional mobile streaming media digital copyright protection method and system

The invention relates to a bidirectional mobile streaming media digital copyright protection method, which supports the sharing and participating mechanism of multimedia resources. A bidirectional mobile streaming media digital copyright protection system consists of an authentication registration module, a resource acquisition module and a resource sharing module, wherein (1) the authentication registration module sets the two processes of local authentication and terminal registration; the local authentication process comprises the steps of checking a user name and a password hash value and performing terminal registration if the user name is consistent with the password hash value; and in the terminal registration process, a user terminal is subjected to remote authentication and identity registration by four-time information exchange with an authentication center and a server so as to finish functions such as user ID registration, user terminal key updating, play list acquisition and the like; (2) the resource acquisition module acquires copyright objects and media contents in the server through the user terminal; and (3) the resource sharing module realizes the media resource sharing function of the user terminal, namely media resources of the user terminal are uploaded to the server and the corresponding copyright objects are submitted so as to realize the media resource sharing among user terminals.