METHOD AND APPARATUS FOR SECURE MEASUREMENT CERTIFICATION
First Claim
1. A device comprising:
- (a) a sensor;
(b) a time generator;
(c) a computing device, comprising a computer processor and a memory, said computing device being in communication with the sensor and with the time generator, and said computing device configured for;
receiving a first signal from the sensor, the first digital signal being based at least in part on a physical measurement from the sensor,receiving a second signal from the time generator, the second signal being based at least in part on a time from the time generator,generating an augmented measurement based on the first signal and the second signal, andperforming a cryptographic operation on at least a portion of the augmented measurement to generate a certified measurement; and
(d) an output device, coupled to the computing device, for writing the certified measurement in response to a certified measurement request.
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Accused Products
Abstract
The invention relates to methods and apparatuses for acquiring a physical measurement, and for creating a cryptographic certification of that measurement, such that its value and time can be verified by a party that was not necessarily present at the measurement.
The certified measurement may also include corroborative information for associating the actual physical measurement process with the certified measurement. Such corroborative information may reflect the internal or external state of the measurement certification device, as well as witness identifiers of any persons that may have been present at the measurement acquisition and certification.
The certification may include a signal receiver to receive timing signals from a satellite or other external source. The external timing signals may be used to generate the time included in the certified measurement, or could be used to determine the location of the measurement certification device for inclusion in the certified measurement.
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Citations
13 Claims
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1. A device comprising:
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(a) a sensor; (b) a time generator; (c) a computing device, comprising a computer processor and a memory, said computing device being in communication with the sensor and with the time generator, and said computing device configured for; receiving a first signal from the sensor, the first digital signal being based at least in part on a physical measurement from the sensor, receiving a second signal from the time generator, the second signal being based at least in part on a time from the time generator, generating an augmented measurement based on the first signal and the second signal, and performing a cryptographic operation on at least a portion of the augmented measurement to generate a certified measurement; and (d) an output device, coupled to the computing device, for writing the certified measurement in response to a certified measurement request. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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receiving, by a computing device from a sensor device, a first signal that is based at least in part on a physical measurement; receiving, by the computing device from a time generator device, a second signal that is based at least in part on a time; generating, by the computing device, an augmented measurement based at least in part on the first signal and the second signal; and performing, by the computing device using a cryptographic processor, a cryptographic operation on at least a portion of the augmented measurement to generate a certifiable measurement. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification