Bundle Protocol Security Specification
draft-ietf-dtn-bpsec-02

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Document Type Active Internet-Draft (dtn WG)
Last updated 2016-07-06
Replaces draft-birrane-dtn-sbsp
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Delay-Tolerant Networking                                     E. Birrane
Internet-Draft                                               K. McKeever
Intended status: Experimental                                    JHU/APL
Expires: January 7, 2017                                    July 6, 2016

                 Bundle Protocol Security Specification
                        draft-ietf-dtn-bpsec-02

Abstract

   This document defines a security protocol providing end to end data
   integrity and confidentiality services for the Bundle Protocol.

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
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   This Internet-Draft will expire on January 7, 2017.

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
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   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Birrane & McKeever       Expires January 7, 2017                [Page 1]
Internet-Draft   Bundle Protocol Security Specification        July 2016

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Motivation  . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Supported Security Services . . . . . . . . . . . . . . .   3
     1.3.  Specification Scope . . . . . . . . . . . . . . . . . . .   4
     1.4.  Related Documents . . . . . . . . . . . . . . . . . . . .   5
     1.5.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   5
   2.  Key Properties  . . . . . . . . . . . . . . . . . . . . . . .   7
     2.1.  Block-Level Granularity . . . . . . . . . . . . . . . . .   7
     2.2.  Multiple Security Sources . . . . . . . . . . . . . . . .   7
     2.3.  Mixed Security Policy . . . . . . . . . . . . . . . . . .   8
     2.4.  User-Selected Ciphersuites  . . . . . . . . . . . . . . .   8
     2.5.  Deterministic Processing  . . . . . . . . . . . . . . . .   9
   3.  Security Block Definitions  . . . . . . . . . . . . . . . . .   9
     3.1.  Block Identification  . . . . . . . . . . . . . . . . . .  10
     3.2.  Block Representation  . . . . . . . . . . . . . . . . . .  10
     3.3.  Block Integrity Block . . . . . . . . . . . . . . . . . .  13
     3.4.  Block Confidentiality Block . . . . . . . . . . . . . . .  14
     3.5.  Block Interactions  . . . . . . . . . . . . . . . . . . .  16
     3.6.  Multi-Target Block Definitions  . . . . . . . . . . . . .  17
     3.7.  Parameters and Result Fields  . . . . . . . . . . . . . .  17
     3.8.  BSP Block Example . . . . . . . . . . . . . . . . . . . .  18
   4.  Canonical Forms . . . . . . . . . . . . . . . . . . . . . . .  20
     4.1.  Technical Notes . . . . . . . . . . . . . . . . . . . . .  20
     4.2.  Primary Block Canonicalization  . . . . . . . . . . . . .  21
     4.3.  Non-Primary-Block Canonicalization  . . . . . . . . . . .  22
   5.  Security Processing . . . . . . . . . . . . . . . . . . . . .  22
     5.1.  Bundles Received from Other Nodes . . . . . . . . . . . .  23
       5.1.1.  Receiving BCB Blocks  . . . . . . . . . . . . . . . .  23
       5.1.2.  Receiving BIB Blocks  . . . . . . . . . . . . . . . .  23
     5.2.  Bundle Fragmentation and Reassembly . . . . . . . . . . .  24
   6.  Key Management  . . . . . . . . . . . . . . . . . . . . . . .  25
   7.  Policy Considerations . . . . . . . . . . . . . . . . . . . .  25
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  26
     8.1.  Attacker Capabilities and Objectives  . . . . . . . . . .  27
     8.2.  Attacker Behaviors and BPSec Mitigations  . . . . . . . .  28
       8.2.1.  Eavesdropping Attacks . . . . . . . . . . . . . . . .  28
       8.2.2.  Modification Attacks  . . . . . . . . . . . . . . . .  28
       8.2.3.  Topology Attacks  . . . . . . . . . . . . . . . . . .  29
       8.2.4.  Message Injection . . . . . . . . . . . . . . . . . .  30
   9.  Ciphersuite Authorship Considerations . . . . . . . . . . . .  30
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