Interface Extensions for TCP-ENO
draft-ietf-tcpinc-api-00

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Document Type Active Internet-Draft (tcpinc WG)
Last updated 2016-07-08
Replaces draft-bittau-tcpinc-api
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Network Working Group                                          A. Bittau
Internet-Draft                                                  D. Boneh
Intended status: Informational                                 D. Giffin
Expires: January 9, 2017                             Stanford University
                                                              M. Handley
                                               University College London
                                                             D. Mazieres
                                                     Stanford University
                                                                E. Smith
                                                       Kestrel Institute
                                                            July 8, 2016

                    Interface Extensions for TCP-ENO
                        draft-ietf-tcpinc-api-00

Abstract

   TCP-ENO negotiates encryption at the transport layer.  It also
   defines a few parameters that are intended to be used or configured
   by applications.  This document specifies operating system interfaces
   for access to these TCP-ENO parameters.  We describe the interfaces
   in terms of socket options, the de facto standard API for adjusting
   per-connection behavior in TCP/IP, and sysctl, a popular mechanism
   for setting global defaults.  Operating systems that lack socket or
   sysctl functionality can implement similar interfaces in their native
   frameworks, but should ideally adapt their interfaces from those
   presented in this document.

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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   This Internet-Draft will expire on January 9, 2017.

Bittau, et al.           Expires January 9, 2017                [Page 1]
Internet-Draft                 tcpinc-api                      July 2016

Copyright Notice

   Copyright (c) 2016 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  API extensions  . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Per-connection options  . . . . . . . . . . . . . . . . .   3
     2.2.  Global options  . . . . . . . . . . . . . . . . . . . . .   6
   3.  Example API mappings  . . . . . . . . . . . . . . . . . . . .   8
     3.1.  Socket options for per-connection settings  . . . . . . .   8
     3.2.  Setting System-wide options with sysctl . . . . . . . . .   8
   4.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Cookie-based authentication . . . . . . . . . . . . . . .   9
     4.2.  Signature-based authentication  . . . . . . . . . . . . .   9
   5.  Security considerations . . . . . . . . . . . . . . . . . . .  10
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   The TCP Encryption Negotiation Option (TCP-ENO)
   [I-D.ietf-tcpinc-tcpeno] permits hosts to negotiate encryption of a
   TCP connection.  One of TCP-ENO's use cases is to encrypt traffic
   transparently, unbeknownst to legacy applications.  Transparent
   encryption requires no changes to existing APIs.  However, other use
   cases require applications to interact with TCP-ENO.  In particular:

   o  Transparent encryption protects only against passive
      eavesdroppers.  Stronger security requires applications to
      authenticate a _Session ID_ value associated with each encrypted
      connection.

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