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Optimized secure media playback control

  • US 7,460,668 B2
  • Filed: 07/21/2004
  • Issued: 12/02/2008
  • Est. Priority Date: 07/21/2004
  • Status: Active Grant
First Claim
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1. A method for configuring a media player to manage rights to playback of media content, the media player possessing a pluratity of master keys, the method comprising:

  • randomly generating and storing a guard;

    providing registration information including the stored guard and an identifier of a master key, the registration information for use in generating configuration information and for selecting a key used to encrypt the configuration information;

    receiving the encrypted configuration information, which includes a guard, an encryption key and an associated identifier identifying the encryption key;

    decrypting the encrypted configuration information using one of the stored plurality of master keys indicated by the identifier of a master key; and

    storing the encryption key and the associated identifier in memory of the player in a case that the received guard is determined to match the stored guard.

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