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AssigneeKoninklijke Philips Electronics N.V.
InventorsPaulus Mathias Hubertus Mechtildis Antonius Gorissen, Wilhelmus Petrus Adrianus Johannus Michiels, Marcel Lambertus Leonardus Bijsterveld
Estimating the term…
A system 100 for updating cryptographic key data 120 comprises a key input 106 for receiving sequential key updates 114; and a key data updater 108 for changing a portion (116) of the cryptographic key data in response to a received one of the sequential key updates (114), the portion not including all the cryptographic key data, wherein different respective portions of the cryptographic key data are selected for respective ones of the sequential key updates. The system further comprises a content input 104 for receiving content data 112 to be processed; and a cryptographic unit 110 for cryptographic processing of the content data in dependence on the key data to obtain processed content data 118. The content input is arranged for receiving a content data stream, successive portions of the content data stream being encrypted based on successive keys corresponding to the successive key updates.
A system (100) for updating cryptographic key data (120), the system comprising
A server system (200) for providing cryptographic key updates, the server system comprising
A method of updating cryptographic key data (120), the method comprising
A method of providing cryptographic key updates, the method comprising
Dependencies are inferred from the claim text.