| 摘要 |
A method of an existing media device for distributing a media key to a new media device joining a local area network or revoking an existing media key. For distributing a media key, a set of key generation counter ("KGC") values are received from the media devices ( 1010 ). Each value is then voted on based on the network keys utilized by the existing media device ( 1012 ). Next, all votes for each value are gathered from the media devices ( 1012 ). A popular values is determined from the set of values ( 1014 ). To revoke a media key, a NONCE is encrypted with the network key ( 1104 ). The encrypted NONCE is then distributed to media devices of the local area network ( 1108 ). Next, votes are gathered from the media devices of the local area network ( 1110 ). All votes are received from media devices that are able to decrypt the NONCE using the media key. |
