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Opportunistic Security: Some Protection Most of the Time (RFC7435)

IP.com Disclosure Number: IPCOM000240101D
Original Publication Date: 2014-Dec-01
Included in the Prior Art Database: 2015-Jan-01
Document File: 22 page(s) / 27K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

V. Dukhovni: AUTHOR

Abstract

1.1. Background

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This is the abbreviated version, containing approximately 10% of the total text.

Internet Engineering Task Force (IETF)                       V. Dukhovni Request for Comments: 7435                                     Two Sigma Category: Informational                                    December 2014 ISSN: 2070-1721

         Opportunistic Security: Some Protection Most of the Time

Abstract

   This document defines the concept "Opportunistic Security" in the    context of communications protocols.  Protocol designs based on    Opportunistic Security use encryption even when authentication is not    available, and use authentication when possible, thereby removing    barriers to the widespread use of encryption on the Internet.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc7435.

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.

Dukhovni                      Informational                     [Page 1]
 RFC 7435                 Opportunistic Security            December 2014

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2      1.1.  Background  . . . . . . . . . . . . . . . . . . . . . . .   2      1.2.  A New Perspective . . . . . . . . . . . . . . . . . . . .   3    2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5    3.  Opportunistic Security Design Principles  . . . . . . . . . .   5    4.  Example: Opportunistic TLS in SMTP  . . . . . . . . . . . . .   8    5.  Operational Considerations  . . . . . . . . . . . . . ....