draft-ietf-bfd-optimizing-authentication-03.txt		draft-ietf-bfd-optimizing-authentication-04.txt
	Network Working Group M. Jethanandani		Network Working Group M. Jethanandani
	Internet-Draft Cisco Systems		Internet-Draft Cisco Systems
	Intended status: Standards Track A. Mishra		Intended status: Standards Track A. Mishra
	Expires: December 29, 2017 O3b Networks		Expires: May 25, 2018 O3b Networks
	A. Saxena		A. Saxena
	Ciena Corporation		Ciena Corporation
	M. Bhatia		M. Bhatia
	Ionos Networks		Ionos Networks
	June 27, 2017		November 21, 2017
	Optimizing BFD Authentication		Optimizing BFD Authentication
	draft-ietf-bfd-optimizing-authentication-03		draft-ietf-bfd-optimizing-authentication-04
	Abstract		Abstract
	This document describes an optimization to BFD Authentication as		This document describes an optimization to BFD Authentication as
	described in Section 6.7 of BFD [RFC5880].		described in Section 6.7 of BFD [RFC5880].
	Requirements Language		Requirements Language
	The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",		The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
	"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this		"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
	document are to be interpreted as described in RFC 2119 [RFC2119].		document are to be interpreted as described in RFC 2119 [RFC2119].
	Status of This Memo		Status of This Memo
	This Internet-Draft is submitted in full conformance with the		This Internet-Draft is submitted in full conformance with the
	provisions of BCP 78 and BCP 79.		provisions of BCP 78 and BCP 79.
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.		Drafts is at https://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on December 29, 2017.		This Internet-Draft will expire on May 25, 2018.
	Copyright Notice		Copyright Notice
	Copyright (c) 2017 IETF Trust and the persons identified as the		Copyright (c) 2017 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of		(https://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	carefully, as they describe your rights and restrictions with respect		carefully, as they describe your rights and restrictions with respect
	to this document. Code Components extracted from this document must		to this document. Code Components extracted from this document must
	include Simplified BSD License text as described in Section 4.e of		include Simplified BSD License text as described in Section 4.e of
	the Trust Legal Provisions and are provided without warranty as		the Trust Legal Provisions and are provided without warranty as
	described in the Simplified BSD License.		described in the Simplified BSD License.
	Table of Contents		Table of Contents
	1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2		1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
	skipping to change at page 6, line 18 ¶		skipping to change at page 6, line 18 ¶
	secure-sequence-numbers-00 (work in progress), May 2017.		secure-sequence-numbers-00 (work in progress), May 2017.
	[I-D.ietf-bfd-stability]		[I-D.ietf-bfd-stability]
	Mishra, A., Jethanandani, M., Saxena, A., Networks, J.,		Mishra, A., Jethanandani, M., Saxena, A., Networks, J.,
	Chen, M., and P. Fan, "BFD Stability", draft-ietf-bfd-		Chen, M., and P. Fan, "BFD Stability", draft-ietf-bfd-
	stability-00 (work in progress), May 2017.		stability-00 (work in progress), May 2017.
	[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate		[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
	Requirement Levels", BCP 14, RFC 2119,		Requirement Levels", BCP 14, RFC 2119,
	DOI 10.17487/RFC2119, March 1997,		DOI 10.17487/RFC2119, March 1997,
	<http://www.rfc-editor.org/info/rfc2119>.		<https://www.rfc-editor.org/info/rfc2119>.
	[RFC6039] Manral, V., Bhatia, M., Jaeggli, J., and R. White, "Issues		[RFC6039] Manral, V., Bhatia, M., Jaeggli, J., and R. White, "Issues
	with Existing Cryptographic Protection Methods for Routing		with Existing Cryptographic Protection Methods for Routing
	Protocols", RFC 6039, DOI 10.17487/RFC6039, October 2010,		Protocols", RFC 6039, DOI 10.17487/RFC6039, October 2010,
	<http://www.rfc-editor.org/info/rfc6039>.		<https://www.rfc-editor.org/info/rfc6039>.
	[RFC6151] Turner, S. and L. Chen, "Updated Security Considerations		[RFC6151] Turner, S. and L. Chen, "Updated Security Considerations
	for the MD5 Message-Digest and the HMAC-MD5 Algorithms",		for the MD5 Message-Digest and the HMAC-MD5 Algorithms",
	RFC 6151, DOI 10.17487/RFC6151, March 2011,		RFC 6151, DOI 10.17487/RFC6151, March 2011,
	<http://www.rfc-editor.org/info/rfc6151>.		<https://www.rfc-editor.org/info/rfc6151>.
	[RFC6194] Polk, T., Chen, L., Turner, S., and P. Hoffman, "Security		[RFC6194] Polk, T., Chen, L., Turner, S., and P. Hoffman, "Security
	Considerations for the SHA-0 and SHA-1 Message-Digest		Considerations for the SHA-0 and SHA-1 Message-Digest
	Algorithms", RFC 6194, DOI 10.17487/RFC6194, March 2011,		Algorithms", RFC 6194, DOI 10.17487/RFC6194, March 2011,
	<http://www.rfc-editor.org/info/rfc6194>.		<https://www.rfc-editor.org/info/rfc6194>.
	6.2. Informative References		6.2. Informative References
	[Dobb96a] Dobbertin, H., "Cryptanalysis of MD5 Compress", May 1996.		[Dobb96a] Dobbertin, H., "Cryptanalysis of MD5 Compress", May 1996.
	[Dobb96b] Dobbertin, H., "The Status of MD5 After a Recent Attack",		[Dobb96b] Dobbertin, H., "The Status of MD5 After a Recent Attack",
	CryptoBytes", 1996.		CryptoBytes", 1996.
	[I-D.ietf-karp-design-guide]		[I-D.ietf-karp-design-guide]
	Lebovitz, G. and M. Bhatia, "Keying and Authentication for		Lebovitz, G. and M. Bhatia, "Keying and Authentication for
	skipping to change at page 7, line 12 ¶		skipping to change at page 7, line 12 ¶
	Hash Functions MD4, MD5, HAVAL-128 and RIPEMD", August		Hash Functions MD4, MD5, HAVAL-128 and RIPEMD", August
	2004.		2004.
	[NIST-HMAC-SHA]		[NIST-HMAC-SHA]
	National Institute of Standards and Technology, Available		National Institute of Standards and Technology, Available
	online at http://csrc.nist.gov/groups/ST/hash/policy.html,		online at http://csrc.nist.gov/groups/ST/hash/policy.html,
	"NIST's Policy on Hash Functions", 2006.		"NIST's Policy on Hash Functions", 2006.
	[RFC1321] Rivest, R., "The MD5 Message-Digest Algorithm", RFC 1321,		[RFC1321] Rivest, R., "The MD5 Message-Digest Algorithm", RFC 1321,
	DOI 10.17487/RFC1321, April 1992,		DOI 10.17487/RFC1321, April 1992,
	<http://www.rfc-editor.org/info/rfc1321>.		<https://www.rfc-editor.org/info/rfc1321>.
	[RFC2104] Krawczyk, H., Bellare, M., and R. Canetti, "HMAC: Keyed-		[RFC2104] Krawczyk, H., Bellare, M., and R. Canetti, "HMAC: Keyed-
	Hashing for Message Authentication", RFC 2104,		Hashing for Message Authentication", RFC 2104,
	DOI 10.17487/RFC2104, February 1997,		DOI 10.17487/RFC2104, February 1997,
	<http://www.rfc-editor.org/info/rfc2104>.		<https://www.rfc-editor.org/info/rfc2104>.
	[RFC4086] Eastlake 3rd, D., Schiller, J., and S. Crocker,		[RFC4086] Eastlake 3rd, D., Schiller, J., and S. Crocker,
	"Randomness Requirements for Security", BCP 106, RFC 4086,		"Randomness Requirements for Security", BCP 106, RFC 4086,
	DOI 10.17487/RFC4086, June 2005,		DOI 10.17487/RFC4086, June 2005,
	<http://www.rfc-editor.org/info/rfc4086>.		<https://www.rfc-editor.org/info/rfc4086>.
	[RFC4822] Atkinson, R. and M. Fanto, "RIPv2 Cryptographic		[RFC4822] Atkinson, R. and M. Fanto, "RIPv2 Cryptographic
	Authentication", RFC 4822, DOI 10.17487/RFC4822, February		Authentication", RFC 4822, DOI 10.17487/RFC4822, February
	2007, <http://www.rfc-editor.org/info/rfc4822>.		2007, <https://www.rfc-editor.org/info/rfc4822>.
	[RFC5310] Bhatia, M., Manral, V., Li, T., Atkinson, R., White, R.,		[RFC5310] Bhatia, M., Manral, V., Li, T., Atkinson, R., White, R.,
	and M. Fanto, "IS-IS Generic Cryptographic		and M. Fanto, "IS-IS Generic Cryptographic
	Authentication", RFC 5310, DOI 10.17487/RFC5310, February		Authentication", RFC 5310, DOI 10.17487/RFC5310, February
	2009, <http://www.rfc-editor.org/info/rfc5310>.		2009, <https://www.rfc-editor.org/info/rfc5310>.
	[RFC5709] Bhatia, M., Manral, V., Fanto, M., White, R., Barnes, M.,		[RFC5709] Bhatia, M., Manral, V., Fanto, M., White, R., Barnes, M.,
	Li, T., and R. Atkinson, "OSPFv2 HMAC-SHA Cryptographic		Li, T., and R. Atkinson, "OSPFv2 HMAC-SHA Cryptographic
	Authentication", RFC 5709, DOI 10.17487/RFC5709, October		Authentication", RFC 5709, DOI 10.17487/RFC5709, October
	2009, <http://www.rfc-editor.org/info/rfc5709>.		2009, <https://www.rfc-editor.org/info/rfc5709>.
	[RFC5880] Katz, D. and D. Ward, "Bidirectional Forwarding Detection		[RFC5880] Katz, D. and D. Ward, "Bidirectional Forwarding Detection
	(BFD)", RFC 5880, DOI 10.17487/RFC5880, June 2010,		(BFD)", RFC 5880, DOI 10.17487/RFC5880, June 2010,
	<http://www.rfc-editor.org/info/rfc5880>.		<https://www.rfc-editor.org/info/rfc5880>.
	[RFC6234] Eastlake 3rd, D. and T. Hansen, "US Secure Hash Algorithms		[RFC6234] Eastlake 3rd, D. and T. Hansen, "US Secure Hash Algorithms
	(SHA and SHA-based HMAC and HKDF)", RFC 6234,		(SHA and SHA-based HMAC and HKDF)", RFC 6234,
	DOI 10.17487/RFC6234, May 2011,		DOI 10.17487/RFC6234, May 2011,
	<http://www.rfc-editor.org/info/rfc6234>.		<https://www.rfc-editor.org/info/rfc6234>.
	[SHA-1-attack1]		[SHA-1-attack1]
	Wang, X., Yin, Y., and H. Yu, "Finding Collisions in the		Wang, X., Yin, Y., and H. Yu, "Finding Collisions in the
	Full SHA-1", 2005.		Full SHA-1", 2005.
	[SHA-1-attack2]		[SHA-1-attack2]
	Wang, X., Yao, A., and F. Yao, "New Collision Search for		Wang, X., Yao, A., and F. Yao, "New Collision Search for
	SHA-1", 2005.		SHA-1", 2005.
	Authors' Addresses		Authors' Addresses
End of changes. 18 change blocks.
	18 lines changed or deleted		18 lines changed or added
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