Media file copyright protection method and system

[0086] Please refer to Figure 2-Figure 5 , the present embodiment provides a method for copyright protection of media files, which can effectively prevent copyright-protected media files from being disseminated indiscriminately, ensure that they are circulated in authorized channels, and at the same time accurately locate the source of illegal duplication.

[0087] The method of this embodiment may specifically include the following steps:

[0088] S1: Randomly generate an encryption key and an identity identifier uniquely corresponding to the user according to the user's personal account information.

[0089] Specifically, when a user applies for registration with the server, after filling in key personal account information, such as a mobile phone number with a unique identifier, the server will randomly generate a uniquely corresponding account number based on the user's personal account information. The encryption key is used for subsequent encryption of media files; in thi

[0150] This embodiment corresponds to Embodiment 1, and provides a protection system for media files, including a server and a first program; the first program can implement the following steps when called by a processor at the server:

[0151] Randomly generate an encryption key and an identity identifier uniquely corresponding to the user according to the user's personal account information;

[0152] After receiving a user-triggered download instruction for a media file, encrypting the media file using an encryption key corresponding to the user;

[0153] Writing the identity identifier corresponding to the user into the media file through steganography.

[0154] The protection system also includes a client and a second program, the second program can implement the following steps when called by the processor of the client:

[0155] The client receives an open instruction corresponding to the one media file;

[0156] The client tries to obtain the encryption key corresponding