Patent
Securing media content using interchangeable encryption key
Howard G. Pinder,Andrew D. Maholski +1 more
- 08 Jun 2007
59
TL;DR: In this paper, the authors present a system for securing media content which includes a digital media device comprising a memory associated with a secure element, which contains a private key and storage for at least one group key.
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Abstract: An embodiment of a system for securing media content includes a digital media device comprising a memory associated with a secure element. The memory contains a private key and storage for at least one group key. The private key is used to decrypt transmissions from a remote access control system that are encrypted by a corresponding public key. The digital media device further comprises logic configured to respond to a first message received from the remote access control system encrypted by the public key and including a first group key, the logic responding to the first message by decrypting the first group key and storing the first group key in the memory of the secure element. The digital media device further comprises logic configured to decrypt a content key with the first group key. The content key is used to encrypt media content stored on a medium accessible by the digital media device.
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Citations
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Hari Sivaramakrishnan,Roy Peter D'Souza,Lev Novik,Nino Bice,David Robinson +4 more
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Eric D. Hybertson
- 10 Dec 2012
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- 28 Jun 2007
TL;DR: In this paper, the first processor of a media device encrypts the escrow key with a public key of a key clearinghouse, which is stored in a storage location outside of the media device.
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