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Cryptographic protection of TCP Streams (tcpcrypt)
draft-bittau-tcp-crypt-04

Internet Engineering Task Force                                A. Bittau
Internet-Draft                                                  D. Boneh
Intended status: Standards Track                              M. Hamburg
Expires: August 18, 2014                             Stanford University
                                                              M. Handley
                                               University College London
                                                             D. Mazieres
                                                                Q. Slack
                                                     Stanford University
                                                       February 14, 2014

           Cryptographic protection of TCP Streams (tcpcrypt)
                     draft-bittau-tcp-crypt-04.txt

Abstract

   This document presents tcpcrypt, a TCP extension for
   cryptographically protecting TCP segments.  Tcpcrypt maintains the
   confidentiality of data transmitted in TCP segments against a passive
   eavesdropper.  It protects connections against denial-of-service
   attacks involving desynchronizing of sequence numbers, and when
   enabled, against forged RST segments.  Finally, applications that
   perform authentication can obtain end-to-end confidentiality and
   integrity guarantees by tying authentication to tcpcrypt Session ID
   values.

   The extension defines two new TCP options, CRYPT and MAC, which are
   designed to provide compatible interworking with TCPs that do not
   implement tcpcrypt.  The CRYPT option allows hosts to negotiate the
   use of tcpcrypt and establish shared secret encryption keys.  The MAC
   option carries a message authentication code with which hosts can
   verify the integrity of transmitted TCP segments.  Tcpcrypt is
   designed to require relatively low overhead, particularly at servers,
   so as to be useful even in the case of servers accepting many TCP
   connections per second.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months

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   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 18, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

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Table of Contents

   1.  Requirements Language  . . . . . . . . . . . . . . . . . . . .  5
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Idealized protocol . . . . . . . . . . . . . . . . . . . . . .  5
     3.1.  Stages of the protocol . . . . . . . . . . . . . . . . . .  5
       3.1.1.  The setup phase  . . . . . . . . . . . . . . . . . . .  6

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