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This draft is a work item of the Operational Security Capabilities for IP Network Infrastructure Working Group of the IETF.
Title : Cryptographic Authentication Algorithm Implementation
Best Practices for Routing Protocols
Author(s) : M. Bhatia, V. Manral
Filename : draft-ietf-opsec-igp-crypto-requirements-00.txt
Pages : 10
Date : 2010-1-30
The routing protocols Open Shortest Path First version 2 (OSPFv2)
[RFC2328], Intermediate System to Intermediate System (IS-IS) [ISO]
[RFC1195] and Routing Information Protocol (RIP) [RFC2453] currently
define Clear Text and MD5 (Message Digest 5) [RFC1321] 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
[RFC4822], IS-IS [RFC5310] and OSPF [RFC5709].
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.
This document examines the current set of available algorithms with
interoperability and effective cryptographic authentication
protection being the principle 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.
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