HMAC authentication for the Babel routing protocol
draft-ietf-babel-hmac-06
The information below is for an old version of the document |
Document |
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Active Internet-Draft (babel WG)
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Authors |
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Clara Do
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Weronika Kolodziejak
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Juliusz Chroboczek
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Last updated |
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2019-06-20
(latest revision 2019-06-07)
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Replaces |
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draft-do-babel-hmac
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Stream |
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IETF
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Intended RFC status |
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Proposed Standard
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Formats |
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pdf
htmlized (tools)
htmlized
bibtex
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Reviews |
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Stream |
WG state
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Submitted to IESG for Publication
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Document shepherd |
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Donald Eastlake
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Shepherd write-up |
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Show
(last changed 2019-03-12)
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IESG |
IESG state |
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AD Evaluation::AD Followup
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Martin Vigoureux
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Send notices to |
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Donald Eastlake <d3e3e3@gmail.com>
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Network Working Group C. Do
Internet-Draft W. Kolodziejak
Obsoletes: 7298 (if approved) J. Chroboczek
Intended status: Standards Track IRIF, University of Paris-Diderot
Expires: December 22, 2019 June 20, 2019
HMAC authentication for the Babel routing protocol
draft-ietf-babel-hmac-06
Abstract
This document describes a cryptographic authentication mechanism for
the Babel routing protocol that has provisions for replay avoidance.
This document updates RFC 6126bis and obsoletes RFC 7298.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on December 22, 2019.
Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Do, et al. Expires December 22, 2019 [Page 1]
Internet-Draft HMAC authentication for Babel June 2019
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Applicability . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Assumptions and security properties . . . . . . . . . . . 3
1.3. Specification of Requirements . . . . . . . . . . . . . . 4
2. Conceptual overview of the protocol . . . . . . . . . . . . . 4
3. Data Structures . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. The Interface Table . . . . . . . . . . . . . . . . . . . 6
3.2. The Neighbour table . . . . . . . . . . . . . . . . . . . 6
4. Protocol Operation . . . . . . . . . . . . . . . . . . . . . 7
4.1. HMAC computation . . . . . . . . . . . . . . . . . . . . 7
4.2. Packet Transmission . . . . . . . . . . . . . . . . . . . 8
4.3. Packet Reception . . . . . . . . . . . . . . . . . . . . 8
4.4. Expiring per-neighbour state . . . . . . . . . . . . . . 12
5. Packet Format . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1. HMAC TLV . . . . . . . . . . . . . . . . . . . . . . . . 12
5.2. PC TLV . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3. Challenge Request TLV . . . . . . . . . . . . . . . . . . 13
5.4. Challenge Reply TLV . . . . . . . . . . . . . . . . . . . 14
6. Security Considerations . . . . . . . . . . . . . . . . . . . 14
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 16
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.1. Normative References . . . . . . . . . . . . . . . . . . 16
9.2. Informational References . . . . . . . . . . . . . . . . 17
Appendix A. Incremental deployment and key rotation . . . . . . 17
Appendix B. Changes from previous versions . . . . . . . . . . . 18
B.1. Changes since draft-ietf-babel-hmac-00 . . . . . . . . . 18
B.2. Changes since draft-ietf-babel-hmac-01 . . . . . . . . . 18
B.3. Changes since draft-ietf-babel-hmac-02 . . . . . . . . . 18
B.4. Changes since draft-ietf-babel-hmac-03 . . . . . . . . . 18
B.5. Changes since draft-ietf-babel-hmac-04 . . . . . . . . . 19
B.6. Changes since draft-ietf-babel-hmac-05 . . . . . . . . . 19
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 19
1. Introduction
By default, the Babel routing protocol trusts the information
contained in every UDP datagram that it receives on the Babel port.
An attacker can redirect traffic to itself or to a different node in
the network, causing a variety of potential issues. In particular,
an attacker might:
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