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Ipsecme Status Pages

IP Security Maintenance and Extensions (Active WG)
Sec Area: Eric Rescorla, Benjamin Kaduk | 2008-Jul-08 —  
Chairs
 
 


2018-09-17 charter

IP Security Maintenance and Extensions (ipsecme)
------------------------------------------------

 Charter

 Current Status: Active

 Chairs:
     David Waltermire <david.waltermire@nist.gov>
     Tero Kivinen <kivinen@iki.fi>

 Security Area Directors:
     Benjamin Kaduk <kaduk@mit.edu>
     Eric Rescorla <ekr@rtfm.com>

 Security Area Advisor:
     Eric Rescorla <ekr@rtfm.com>

 Mailing Lists:
     General Discussion: ipsec@ietf.org
     To Subscribe:       https://www.ietf.org/mailman/listinfo/ipsec
     Archive:            https://mailarchive.ietf.org/arch/browse/ipsec/

Description of Working Group:

  The IPsec suite of protocols includes IKEv1 (RFC 2409 and associated
  RFCs, IKEv1 is now obsoleted), IKEv2 (RFC 7296), and the IPsec
  security architecture (RFC 4301). IPsec is widely deployed in VPN
  gateways, VPN remote access clients, and as a substrate for
  host-to-host, host-to-network, and network-to-network security.

  The IPsec Maintenance and Extensions Working Group continues the work
  of the earlier IPsec Working Group which was concluded in 2005. Its
  purpose is to maintain the IPsec standard and to facilitate discussion
  of clarifications, improvements, and extensions to IPsec, mostly to
  ESP and IKEv2. The working group also serves as a focus point for
  other IETF Working Groups who use IPsec in their own protocols.

  The current work items include:

  IKEv1 using shared secret authentication was partially resistant to
  quantum computers. IKEv2 removed this feature to make the protocol
  more usable. The working group will add a mode to IKEv2 or otherwise
  modify the shared-secret mode of IKEv2 to have similar or better quantum
  resistant properties to those of IKEv1.

  Split-DNS is a common configuration for VPN deployments in which only
  one or a few private DNS domains are accessible and resolvable via the
  tunnel. Adding new configuration attributes to IKEv2 for configuring
  Split-DNS would allow more deployments to adopt IKEv2. This
  configuration should also allow verification of the domains using
  DNSSEC. Working group will specify needed configuration attributes for
  IKEv2.

  Currently, widely used counter mode based ciphers send both the ESP
  sequence number and IV in the form of a counter, as they are very
  commonly the same. There has been interest to work on a document that
  will compress the packet and derive IV from the sequence number
  instead of sending it in separate field. The working group will
  specify how this compression can be negotiated in the IKEv2, and
  specify how the encryption algorithm and ESP format is used in this
  case.

  The Group Domain of Interpretation (GDOI - RFC 6407) is an IKEv1-based
  protocol for negotiating group keys for both multicast and unicast
  uses. The Working Group will develop an IKEv2-based alternative that
  will include cryptographic updates. A possible starting point is
  draft-yeung-g-ikev2.

  Postquantum Cryptography brings new key exchange methods. Most of
  these methods that are known to date have much larger public keys than
  conventional Diffie-Hellman public keys. Directly using these methods in
  IKEv2 might lead to a number of problems due to the increased size of
  initial IKEv2 messages. The working group will analyze the possible
  problems and develop a solution, that will make adding Postquantum key
  exchange methods more easy. The solution will allow post quantum key
  exchange to be performed in parallel with (or instead of) the existing
  Diffie-Hellman key exchange.

  A growing number of use cases for constrained networks - but not
  limited to those networks - have shown interest in reducing ESP (resp. IKEv2)
  overhead by compressing ESP (resp IKEv2) fields. The WG will define
  extensions of ESP and IKEv2 to enable ESP header compression.

  Possible starting points are draft-mglt-ipsecme-diet-esp,
  draft-mglt-ipsecme-ikev2-diet-esp-extension,
  draft-smyslov-ipsecme-ikev2-compression and
  draft-smyslov-ipsecme-ikev2-compact.

  RFC7427 allows peers to indicate hash algorithms they support, thus
  eliminating ambiguity in selecting a hash function for digital
  signature authentication. However, advances in cryptography lead to a
  situation when some signature algorithms have several signature
  formats. A prominent example is RSASSA-PKCS#1 v 1.5 and RSASSA-PSS; however
  it is envisioned that the same situation may repeat in future with
  other signature algorithms. Currently IKE peers have no explicit way
  to indicate to each other which signature format(s) they support. That
  leads to interoperability problems. The WG will investigate the
  situation and come up with a solution that allows peers to deal with
  the problem in an interoperable way.

  RFC7296 defines a generic notification code that is related to a
  failure to handle an internal address failure. That code does not
  explicitly allow an initiator to determine why a given address family
  is not assigned, nor whether it should try using another address
  family. The Working Group will specify a set of more specific
  notification codes that will provide sufficient information to the
  IKEv2 initiator about the encountered failure. A possible starting
  pointing is draft-boucadair-ipsecme-ipv6-ipv4-codes.

  Some systems support security labels (aka security context) as one of
  the selectors of the SPD. This label needs to be part of the IKE
  negotiation for the IPsec SA. Non-standard implementations exist for
  IKEv1 (formerly abusing IPSEC Security Association Attribute 10, now
  using private space IPSEC Security Association Attribute 32001). The
  work is to standarize this for IKEv2, in a way that will be backwards
  compatible with old implementations, meaning it must not require any
  changes to implementations not supporting this.


Goals and Milestones:
  Apr 2018 - IETF Last Call on Split-DNS Configuration for IKEv2
  Apr 2018 - IETF Last Call on Implicit IV in IPsec
  May 2018 - IETF Last Call on partially quantum resistant IKEv2
  Oct 2018 - The internal address failure indication in IKEv2 to IESG
  Dec 2018 - The ESP on contrained network to IESG
  Dec 2018 - G-DOI for IKEv2 to IESG
  Jan 2019 - The security labels support for IKEv2 to IESG
  Mar 2019 - Signature algorithm negotiation for IKEv2 to IESG
  May 2019 - Postquantum cryptography document for IKEv2 to IESG


All charter page changes, including changes to draft-list, rfc-list and milestones:



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