FairPlay allows unlimited music burns to CDs and unlimited music synchronization to iPods, but restricts listening to three Mac computers. Upon attempting to play a file, the master key stored within the file is then matched to the user key, and if successful, allows playing. When a user registers a new computer with iTunes, the device requests authorization from Apple's servers, thereby gaining a user key. The key required to decrypt the master key is called the "user key". The master key required to decrypt the audio layer is also stored in encrypted form in the MP4 container file. The layer is encrypted using the AES algorithm. 4 Steve Jobs' "Thoughts on Music" open letterįairPlay-protected files are regular MP4 container files with an encrypted AAC audio layer.3.1 RealNetworks and Harmony technology.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |