Key derivation system

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United States of America Patent

PATENT NO 8843765
APP PUB NO 20140098953A1
SERIAL NO

13648613

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Abstract

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A device generates a content key that depends upon device security state information. For example, the device may retrieve a first content key and a security state, and then derive a content key using the first content key and the security state. Accordingly, if the security state is incorrect, then the generated content key is incorrect, and the device cannot decrypt content provided to the device.

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Patent Owner(s)

  • NXP B.V.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dellow, Andrew Minchinhampton, GB 54 560

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