The IESG has approved the following document:
- 'Network Time Security for the Network Time Protocol'
  (draft-ietf-ntp-using-nts-for-ntp-28.txt) as Proposed Standard

This document is the product of the Network Time Protocol Working Group.

The IESG contact persons are √Čric Vyncke and Suresh Krishnan.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-ntp-using-nts-for-ntp/





Technical Summary

This memo specifies Network Time Security (NTS), a mechanism for    using 
Transport Layer Security (TLS) and Authenticated Encryption with Associated 
Data (AEAD) to provide cryptographic security for the client-server mode of the 
Network Time Protocol (NTP).

NTS is structured as a suite of two loosely coupled sub-protocols. The first 
(NTS-KE) handles initial authentication and key establishment over TLS.  The 
second handles encryption and authentication during NTP time synchronization 
via extension fields in the NTP packets, and holds all required state only on 
the client via opaque cookies.

Working Group Summary

The document has clear working group consensus for publication, and has been 
reviewed by several WG participants since its initial adoption as a working 
group item. 

Document Quality

This document has been reviewed and revised several times during its 
development. There were no specific external expert reviews conducted; however, 
security area review was specifically solicited. 
 
Personnel

Karen O'Donoghue is the Document Shepherd.  Suresh Krishnan is the Responsible 
Area Director. 

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