Method and system for preventing revocation denial of service attacks

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 9338009
SERIAL NO

11743533

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Methods and systems for preventing revocation denial of service attacks are disclosed and may include receiving and decrypting a command for revoking a secure key utilizing a hidden key, and revoking the secure key upon successful verification of a signature. The command may comprise a key ID that is unique to a specific set-top box. A key corresponding to the command for revoking the secure key may be stored in a one-time programmable memory, compared to a reference, and the security key may be revoked based on the comparison. The command for revoking the secure key may be parsed from a transport stream utilizing a hardware parser. The method and system may also comprise generating a command for revoking a secure key. The command may be encrypted and signed utilizing a hidden key and may comprise a key ID that is unique to a specific set-top box.

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Patent Owner(s)

  • BROADCOM CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dellow, Andrew Minchinhampton, GB 54 399
Rodgers, Stephane San Diego, US 34 319

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