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Status:

PROPOSED STANDARD

Updates:

RFC 5905

Updated by:

RFC 9748

Authors:

A. Malhotra
S. Goldberg

Stream:

IETF

Source:

ntp (int)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC8573

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Other actions:Submit Errata  | Find IPR Disclosures from the IETF  | View History of RFC 8573

Abstract

The Network Time Protocol (NTP), as described in RFC 5905, statesthat NTP packets should be authenticated by appending NTP data to a128-bit key and hashing the result with MD5 to obtain a 128-bit tag.This document deprecates MD5-based authentication, which isconsidered too weak, and recommends the use of AES-CMAC as describedin RFC 4493 as a replacement.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.