Securely establishing time values at connected devices
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United States of America Patent
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Mar 26, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jul 14, 2016
filing date -
Jul 14, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method of establishing a secure time value in a connected device. The method includes: receiving a hash of a pinset at the connected device from each independent time server in a federation, wherein the pinset is stored at the connected device as well as at the independent time servers remotely located from the connected device; receiving at the connected device a time value along with each hash of the pinset; attempting to verify the hashes of the pinset received from each of the plurality of independent time servers at the connected device; and determining at the connected device which time values received from the plurality of independent time servers are valid based on validity of the hashes.
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