Network Time Protocol: Secure Network Time

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Last updated 2019-01-03 (latest revision 2018-07-02)
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The proposal specifies a means for NTP instances that can establish a TCP connection between themselves to create secure ephemeral keys. With the known weaknesses of the public-key security protocol, Autokey, which is defined by RFC 5906 [RFC5906], a replacement for Autokey that supports at least Client/Server and Symmetric modes must be provided.


Harlan Stenn (
David Mills (
Philip Prindeville (

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