Public security broadcast control media management and authentication method for recognizing non tampering integrity
A technology for media management and public security, which is applied in the fields of public keys for secure communications, user identity/authority verification, and devices for branch offices to provide special services, and can solve problems such as hidden dangers of public media terminal players.
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[0033] 1. Add media files in the media center
[0034] Encrypt the media file through the AES symmetric encryption algorithm, and add the name of the rights object file (Rights Object) corresponding to the media file before the encrypted media file; the name of the rights object file and the encrypted media file form the media encryption in the ECP package part (Content);
[0035] Use the SHA-1 and RSA algorithm to digitally sign the media encryption part (Content) generated in the previous step to generate the signature part (Signature);
[0036] Then generate a descriptive header (Header), which contains information such as media file name, file length, rights object name, digest and signature length;
[0037] Then, splicing the generated parts (Header, Content, Signature) and digesting the message of this union to generate a digest part (Digest); finally, splicing these parts (Header, Content, Signature, Digest), Compose a media ECP package and add it to the media library...
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