G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 21/22 (2006.01) G06F 11/36 (2006.01)
Patent
CA 2646616
A method, device and system for securely managing debugging processes within a communication device, such as a set top box or other multimedia processing device. For example, a security processor (SP) within the communication device manages the lifetime (LT) of any access token issued for use in activating debugging privileges within the communication device. The security processor authenticates an issued access token and securely delivers appropriate debug authorization information to the device controller. The security processor uses its secure, internal timer to count down the lifetime and update the remaining lifetime of the issued access token during the processing of each command by the security processor. In addition to securely managing the issuance of the access token and it's remaining lifetime, the updating process reduces any impact on the normal communications within the device. The method overcomes the issue of the communication device not having a secure internal clock.
Chen Peter
Franks Bill
Medvinsky Alexander
Zhang Jiang
General Instrument Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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