Synchronizing Internet Clock frequency protocol (sic)

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Last updated 2020-04-30 (latest revision 2019-10-28)
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Synchronizing Internet Clock Frequency specifies a new secure method to synchronize difference clocks on the Internet, assuring smoothness (i.e., frequency stability) and robustness to man-in-the-middle attacks. In 90% of all cases, Synchronized Internet Clock Frequency is highly accurate, with a Maximum Time Interval Error less than 25 microseconds by a minute. Synchronized Internet Clock Frequency is based on a regular packet exchange and works with commodity terminal hardware.


José Alvarez-Hamelin (
David Samaniego (
Alfredo Ortega (
Ruediger Geib (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)