Summary of Cryptographic Authentication Algorithm Implementation Requirements for Routing Protocols
RFC 6094
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RFC - Informational
(February 2011; No errata)
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2015-10-14
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RFC 6094 (Informational)
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Ron Bonica
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Internet Engineering Task Force (IETF) M. Bhatia
Request for Comments: 6094 Alcatel-Lucent
Category: Informational V. Manral
ISSN: 2070-1721 IP Infusion
February 2011
Summary of Cryptographic Authentication Algorithm Implementation
Requirements for Routing Protocols
Abstract
The routing protocols Open Shortest Path First version 2 (OSPFv2),
Intermediate System to Intermediate System (IS-IS), and Routing
Information Protocol (RIP) currently define cleartext and MD5
(Message Digest 5) methods for authenticating protocol packets.
Recently, effort has been made to add support for the SHA (Secure
Hash Algorithm) family of hash functions for the purpose of
authenticating routing protocol packets for RIP, IS-IS, and OSPF.
To encourage interoperability between disparate implementations, it
is imperative that we specify the expected minimal set of algorithms,
thereby ensuring that there is at least one algorithm that all
implementations will have in common.
Similarly, RIP for IPv6 (RIPng) and OSPFv3 support IPsec algorithms
for authenticating their protocol packets.
This document examines the current set of available algorithms, with
interoperability and effective cryptographic authentication
protection being the principal considerations. Cryptographic
authentication of these routing protocols requires the availability
of the same algorithms in disparate implementations. It is desirable
that newly specified algorithms should be implemented and available
in routing protocol implementations because they may be promoted to
requirements at some future time.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Bhatia & Manral Informational [Page 1]
RFC 6094 Crypto Reqs for Routing Protocols February 2011
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6094.
Copyright Notice
Copyright (c) 2011 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
(http://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.
Table of Contents
1. Introduction ....................................................3
2. Intermediate System to Intermediate System (IS-IS) ..............4
2.1. Authentication Scheme Selection ............................4
2.2. Authentication Algorithm Selection .........................5
3. Open Shortest Path First Version 2 (OSPFv2) .....................5
3.1. Authentication Scheme Selection ............................6
3.2. Authentication Algorithm Selection .........................6
4. Open Shortest Path First Version 3 (OSPFv3) .....................7
5. Routing Information Protocol Version 2 (RIPv2) ..................7
5.1. Authentication Scheme Selection ............................7
5.2. Authentication Algorithm Selection .........................8
6. Routing Information Protocol for IPv6 (RIPng) ...................8
7. Security Considerations .........................................9
8. Acknowledgements ................................................9
9. References .....................................................10
9.1. Normative References ......................................10
9.2. Informative References ....................................10
Bhatia & Manral Informational [Page 2]
RFC 6094 Crypto Reqs for Routing Protocols February 2011
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