Deezer Master Decryption Key Work Official

No. It is a session credential . If your premium account expires, the ARL token becomes useless. If Deezer bans the token, you cannot decrypt new tracks.

Deezer stores its music files in an encrypted format (often Blowfish or AES). The "master key" is a static string of characters used by the application to decrypt these files during playback. Decryption Process deezer master decryption key work