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Cryptographic Algorithms for the TCP Authentication Option (TCP-AO)
RFC 5926

Approval announcement
Draft of message to be sent after approval:


From: The IESG <>
To: IETF-Announce <>
Cc: Internet Architecture Board <>,
    RFC Editor <>, 
    tcpm mailing list <>, 
    tcpm chair <>
Subject: Protocol Action: 'Cryptographic Algorithms for TCP's Authentication Option, TCP-AO' to Proposed Standard

The IESG has approved the following document:

- 'Cryptographic Algorithms for TCP's Authentication Option, TCP-AO '
   <draft-ietf-tcpm-tcp-ao-crypto-03.txt> as a Proposed Standard

This document is the product of the TCP Maintenance and Minor Extensions Working Group. 

The IESG contact persons are Lars Eggert and Magnus Westerlund.

A URL of this Internet-Draft is:

Ballot Text

Technical Summary

  The TCP Authentication Option, TCP-AO, relies on security algorithms
  to provide authentication between two end-points.  There are many
  such algorithms available, and two TCP-AO systems cannot interoperate
  unless they are using the same algorithms.  This document specifies
  the algorithms and attributes that can be used in TCP-AO's current
  manual keying mechanism.

Document Quality

  Vendors have expressed support for this work and begun implementing
  it and sharing feedback with TCPM.


  Wesley Eddy ( is the document shepherd. Lars
  Eggert ( reviewed the document for the IESG.

RFC Editor Note

  Deficiencies in xml2rfc cause an invalid table-of-contents to be
  generated. As discussed during IETF-77, please manually recreate
  the table-of-contents.

RFC Editor Note