Bundle Protocol Security Specification
draft-ietf-dtn-bpsec-05

Document Type Active Internet-Draft (dtn WG)
Last updated 2017-07-02
Replaces draft-birrane-dtn-sbsp
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Delay-Tolerant Networking                                     E. Birrane
Internet-Draft                                               K. McKeever
Intended status: Standards Track                                 JHU/APL
Expires: January 2, 2018                                    July 1, 2017

                 Bundle Protocol Security Specification
                        draft-ietf-dtn-bpsec-05

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.

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   This Internet-Draft will expire on January 2, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Birrane & McKeever       Expires January 2, 2018                [Page 1]
Internet-Draft   Bundle Protocol Security Specification        July 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Supported Security Services . . . . . . . . . . . . . . .   3
     1.2.  Specification Scope . . . . . . . . . . . . . . . . . . .   4
     1.3.  Related Documents . . . . . . . . . . . . . . . . . . . .   5
     1.4.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   5
   2.  Design Decisions  . . . . . . . . . . . . . . . . . . . . . .   6
     2.1.  Block-Level Granularity . . . . . . . . . . . . . . . . .   6
     2.2.  Multiple Security Sources . . . . . . . . . . . . . . . .   7
     2.3.  Mixed Security Policy . . . . . . . . . . . . . . . . . .   7
     2.4.  User-Selected Cipher Suites . . . . . . . . . . . . . . .   8
     2.5.  Deterministic Processing  . . . . . . . . . . . . . . . .   8
   3.  Security Blocks . . . . . . . . . . . . . . . . . . . . . . .   8
     3.1.  Block Definitions . . . . . . . . . . . . . . . . . . . .   8
     3.2.  Uniqueness  . . . . . . . . . . . . . . . . . . . . . . .   9
     3.3.  Target Multiplicity . . . . . . . . . . . . . . . . . . .   9
     3.4.  Target Identification . . . . . . . . . . . . . . . . . .  10
     3.5.  Block Representation  . . . . . . . . . . . . . . . . . .  10
     3.6.  Abstract Security Block . . . . . . . . . . . . . . . . .  11
     3.7.  Block Integrity Block . . . . . . . . . . . . . . . . . .  14
     3.8.  Block Confidentiality Block . . . . . . . . . . . . . . .  15
     3.9.  Block Interactions  . . . . . . . . . . . . . . . . . . .  16
     3.10. Cipher Suite Parameter and Result Identification  . . . .  17
     3.11. BSP Block Example . . . . . . . . . . . . . . . . . . . .  18
   4.  Canonical Forms . . . . . . . . . . . . . . . . . . . . . . .  19
   5.  Security Processing . . . . . . . . . . . . . . . . . . . . .  20
     5.1.  Bundles Received from Other Nodes . . . . . . . . . . . .  20
       5.1.1.  Receiving BCB Blocks  . . . . . . . . . . . . . . . .  20
       5.1.2.  Receiving BIB Blocks  . . . . . . . . . . . . . . . .  21
     5.2.  Bundle Fragmentation and Reassembly . . . . . . . . . . .  22
   6.  Key Management  . . . . . . . . . . . . . . . . . . . . . . .  22
   7.  Security Policy Considerations  . . . . . . . . . . . . . . .  23
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  24
     8.1.  Attacker Capabilities and Objectives  . . . . . . . . . .  24
     8.2.  Attacker Behaviors and BPSec Mitigations  . . . . . . . .  25
       8.2.1.  Eavesdropping Attacks . . . . . . . . . . . . . . . .  25
       8.2.2.  Modification Attacks  . . . . . . . . . . . . . . . .  26
       8.2.3.  Topology Attacks  . . . . . . . . . . . . . . . . . .  27
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