{
  "number": 8573,
  "title": "Message Authentication Code for the Network Time Protocol",
  "authors": [
    "A. Malhotra",
    "S. Goldberg"
  ],
  "published": "2019-06",
  "status": "Proposed Standard",
  "stream": "IETF",
  "area": "int",
  "working_group": "ntp",
  "pages": 5,
  "formats": [
    "TXT",
    "HTML"
  ],
  "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.",
  "keywords": [
    "NTP"
  ],
  "draft": "draft-ietf-ntp-mac-06",
  "doi": "10.17487/RFC8573",
  "updates": [
    "RFC5905"
  ],
  "updated_by": [
    "RFC9748"
  ],
  "urls": {
    "html": "https://rfc.dk/rfc8573/",
    "text": "https://rfc.dk/rfc8573.txt",
    "rfc_editor": "https://www.rfc-editor.org/rfc/rfc8573",
    "datatracker": "https://datatracker.ietf.org/doc/rfc8573/"
  },
  "text_modified": "2019-06-24T02:45:16.582607025Z"
}