Trusted real time clock
First Claim
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1. For use with a real time clock that keeps a wall time, a method comprising detecting a possible attack against the real time clock, and updating a status store to indicate a possible attack against the real time clock.
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Abstract
Methods, apparatus and computer readable medium are described that attempt increase trust in a wall time provided by a real time clock. In some embodiments, a detector detects activities that may be associated with attacks against the real time clock. Based upon whether the detector detects a possible attack against the real time clock, the computing device may determine whether or not to trust the wall time provided by the real time clock.
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Citations
30 Claims
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1. For use with a real time clock that keeps a wall time, a method comprising
detecting a possible attack against the real time clock, and updating a status store to indicate a possible attack against the real time clock.
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10. A chipset comprising
a real time clock to keep a wall time, a status store to indicate whether a possible attack against the real time clock was detected, and a detector to detect a possible attack against the real time clock and to update the status store based upon whether a possible attack against real time clock was detected.
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16. A computing device comprising
memory to store a plurality of instructions, a real time clock to provide a wall time, a processor to obtain the wall time from the real time clock in response to processing the plurality of instructions, and a detector to indicate to the processor whether a possible attack against the real time clock has been detected.
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21. A machine-readable medium comprising a plurality of instructions that in response to being executed result in a computing device
determining that an attack against a real time clock of the computing device has been detected, and responding to the attack against the real time clock.
Specification