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IETF Liaison on D-H Group Repository

IETF Liaison on D-H Group Repository. Authors:. Date: 2012-07-19. Abstract. IEEE 802.11-2012 uses a registry maintained by IANA (“Group Description” for IKEv1) and requests that the registry be updated to include the “ Brainpool ” set of elliptic curves. What’s the Issue?.

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IETF Liaison on D-H Group Repository

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  1. IETF Liaison on D-H Group Repository Authors: • Date:2012-07-19 Dan Harkins, Aruba Networks

  2. Abstract • IEEE 802.11-2012 uses a registry maintained by IANA (“Group Description” for IKEv1) and requests that the registry be updated to include the “Brainpool” set of elliptic curves Dan Harkins, Aruba Networks

  3. What’s the Issue? • A new set of elliptic curves has been defined in RFC 5639 called “the Brainpool curves” • The SAE authentication algorithm uses code points from the “Group Description” IKEv1 registry maintained by IANA to conveniently identify domain parameter sets (802.11-2012, see 11.3.4.1) • IANA is considering whether or not to allocate code points to identify the domain parameter sets for these curves in the “Group Description” registry • For IEEE 802.11-2012 to use these new elliptic curves, IANA needs to assign code points Dan Harkins, Aruba Networks

  4. What’s the Mapping Like? • It maps an unsigned long, like “47”, to something like this: • p = A9FB57DBA1EEA9BC3E660A909D838D726E3BF623D52620282013481D1F6E5377 • A =7D5A0975FC2C3057EEF67530417AFFE7FB8055C126DC5C6CE94A4B44F330B5D9 • B = 26DC5C6CE94A4B44F330B5D9BBD77CBF958416295CF7E1CE6BCCDC18FF8C07B6 • x = 8BD2AEB9CB7E57CB2C4B482FFC81B7AFB9DE27E1E3BD23C23A4453BD9ACE3262 • y = 547EF835C3DAC4FD97F8461A14611DC9C27745132DED8E545C1D54C72F046997 • q = A9FB57DBA1EEA9BC3E660A909D838D718C397AA3B561A6F7901E0E82974856A7 • h = 1 • It’s much more convenient to say “47”! • A repository of good domain parameter sets exists – defined by the IETF, no need to invent another. Dan Harkins, Aruba Networks

  5. Liaison Text • The IEEE 802.11 Working Group understands that a new set of elliptic curves (the “Brainpoolcurves”) defined in RFC 5639 are proposed to be added to the Group Description IANA registry that was established for IKEv1 (RFC 2409). The IEEE 802.11 Working Group supports this proposed addition. • The code points in this registry are used by IEEE 802.11-2012 to conveniently identify domain parameter sets for use by an authentication protocol that employs discrete logarithm cryptography. • To enable support of the “Brainpool curves” in IEEE 802.11-2012, the IEEE 802.11 Working Group requests that the IETF make a request to IANA to update the IKEv1 registry named “Group Description” and assign code points for the “Brainpoolcurves”. Dan Harkins, Aruba Networks

  6. Draft Liaison Envelope • To: Paul Hoffman and YaronSheffer, IPsecme Chairman, • Russ Housley, IETF Chairman • CC: Stephen Farrell and Sean Turner, Security Area Co-Directors, • Dorothy Stanley, IEEE 802.11 Liaison to the IETF • <Body of Liaison from next slide> • Signed: Bruce Kramer, 802.11 WG Chairman Dan Harkins, Aruba Networks

  7. Liaison Motion • Motion: • Request the IEEE 802.11 WG chair transmit the liaison on slide 5 of “11-12-0970-00-0000-ietf-liaison-on-diffie-hellman-groups.potx” to the IETF Security Area Directors and any persons he deems appropriate. • Moved: Dan Harkins, Seconded: <name> • Result: y-n-a Dan Harkins, Aruba Networks

  8. References • IEEE 802.11-2012, section 11.3.4.1 • RFC 5639 • http://www.iana.org/assignments/ipsec-registry • (Group Description registry) Dan Harkins, Aruba Networks

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