[Ntp] RFC 8573 on Message Authentication Code for the Network Time Protocol
rfc-editor@rfc-editor.org Mon, 24 June 2019 02:48 UTC
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Subject: [Ntp] RFC 8573 on Message Authentication Code for the Network Time Protocol
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A new Request for Comments is now available in online RFC libraries.
RFC 8573
Title: Message Authentication Code for the
Network Time Protocol
Author: A. Malhotra,
S. Goldberg
Status: Standards Track
Stream: IETF
Date: June 2019
Mailbox: aanchal4@bu.edu,
goldbe@cs.bu.edu
Pages: 5
Characters: 10055
Updates: RFC 5905
I-D Tag: draft-ietf-ntp-mac-06.txt
URL: https://www.rfc-editor.org/info/rfc8573
DOI: 10.17487/RFC8573
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.
This document is a product of the Network Time Protocol Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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