Message Authentication Codes for the Network Time Protocol
draft-aanchal4-ntp-mac-03
| Document | Type | Replaced Internet-Draft (ntp WG) | |
|---|---|---|---|
| Authors | Aanchal Malhotra , Sharon Goldberg | ||
| Last updated | 2017-04-29 (Latest revision 2016-10-26) | ||
| Replaced by | RFC 8573 | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Intended RFC status | (None) | ||
| Formats |
Expired & archived
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| Stream | WG state | Adopted by a WG | |
| Document shepherd | (None) | ||
| IESG | IESG state | Replaced by draft-ietf-ntp-mac | |
| Consensus boilerplate | Unknown | ||
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
https://www.ietf.org/archive/id/draft-aanchal4-ntp-mac-03.txt
Abstract
The Network Time Protocol (NTP) RFC 5905 [RFC5905] uses a message authentication code (MAC) to cryptographically authenticate its UDP packets. Currently, NTP packets are authenticated by appending a 128-bit key to the NTP data, and hashing the result with MD5 to obtain a 128-bit tag. However, as discussed in [BCK] and [RFC6151], this is not a secure MAC. As such, this draft considers different secure MAC algorithms for use with NTP, evaluates their performance, and recommends the use of CMAC-AES [RFC4493]. We also suggest deprecating the use of MD5 as defined in [RFC5905] for authenticating NTP packets.
Authors
Aanchal Malhotra
Sharon Goldberg
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)