File formats:

Status:

PROPOSED STANDARD

Updates:

RFC 5905

Authors:

A. Malhotra
S. Goldberg

Stream:

IETF

Source:

ntp (int)

Cite this RFC: TXT  |  XML  |   BibTeX

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

Discuss this RFC: Send questions or comments to the mailing list ntp@ietf.org

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, states that NTP packets should be authenticated by appending NTP data to a 128-bit key and hashing the result with MD5 to obtain a 128-bit tag. This document deprecates MD5-based authentication, which is considered too weak, and recommends the use of AES-CMAC as described in RFC 4493 as a replacement.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.