Bundle Protocol Security Specification
draft-ietf-dtn-bpsec-25

Document Type Active Internet-Draft (dtn WG)
Authors Edward Birrane  , Kenneth McKeever 
Last updated 2020-12-03 (latest revision 2020-12-01)
Replaces draft-birrane-dtn-sbsp
Stream IETF
Intended RFC status Proposed Standard
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Reviews
Stream WG state Submitted to IESG for Publication (wg milestone: Jul 2019 - Bundle Security Prot... )
Document shepherd Scott Burleigh
Shepherd write-up Show (last changed 2019-06-19)
IESG IESG state IESG Evaluation::AD Followup
Consensus Boilerplate Yes
Telechat date
Has a DISCUSS. Has enough positions to pass once DISCUSS positions are resolved.
Responsible AD Magnus Westerlund
Send notices to Scott Burleigh <Scott.C.Burleigh@jpl.nasa.gov>
IANA IANA review state IANA - Not OK
IANA expert review state Reviews assigned
IANA expert review comments Asking experts to approve Bundle Status Report Reason Codes added to document after IANA's IESG Evaluation review.
Delay-Tolerant Networking                                     E. Birrane
Internet-Draft                                               K. McKeever
Intended status: Standards Track                                 JHU/APL
Expires: June 4, 2021                                   December 1, 2020

                 Bundle Protocol Security Specification
                        draft-ietf-dtn-bpsec-25

Abstract

   This document defines a security protocol providing 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 June 4, 2021.

Copyright Notice

   Copyright (c) 2020 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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   described in the Simplified BSD License.

Birrane & McKeever        Expires June 4, 2021                  [Page 1]
Internet-Draft   Bundle Protocol Security Specification    December 2020

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 . . . . . . . . . . . . . . . . . . . . . . .   6
   2.  Design Decisions  . . . . . . . . . . . . . . . . . . . . . .   7
     2.1.  Block-Level Granularity . . . . . . . . . . . . . . . . .   7
     2.2.  Multiple Security Sources . . . . . . . . . . . . . . . .   8
     2.3.  Mixed Security Policy . . . . . . . . . . . . . . . . . .   9
     2.4.  User-Defined Security Contexts  . . . . . . . . . . . . .   9
     2.5.  Deterministic Processing  . . . . . . . . . . . . . . . .   9
   3.  Security Blocks . . . . . . . . . . . . . . . . . . . . . . .  10
     3.1.  Block Definitions . . . . . . . . . . . . . . . . . . . .  10
     3.2.  Uniqueness  . . . . . . . . . . . . . . . . . . . . . . .  10
     3.3.  Target Multiplicity . . . . . . . . . . . . . . . . . . .  12
     3.4.  Target Identification . . . . . . . . . . . . . . . . . .  13
     3.5.  Block Representation  . . . . . . . . . . . . . . . . . .  13
     3.6.  Abstract Security Block . . . . . . . . . . . . . . . . .  13
     3.7.  Block Integrity Block . . . . . . . . . . . . . . . . . .  16
     3.8.  Block Confidentiality Block . . . . . . . . . . . . . . .  17
     3.9.  Block Interactions  . . . . . . . . . . . . . . . . . . .  18
     3.10. Parameter and Result Identification . . . . . . . . . . .  20
     3.11. BSP Block Examples  . . . . . . . . . . . . . . . . . . .  20
       3.11.1.  Example 1: Constructing a Bundle with Security . . .  20
       3.11.2.  Example 2: Adding More Security At A New Node  . . .  21
   4.  Canonical Forms . . . . . . . . . . . . . . . . . . . . . . .  23
   5.  Security Processing . . . . . . . . . . . . . . . . . . . . .  24
     5.1.  Bundles Received from Other Nodes . . . . . . . . . . . .  24
       5.1.1.  Receiving BCBs  . . . . . . . . . . . . . . . . . . .  24
       5.1.2.  Receiving BIBs  . . . . . . . . . . . . . . . . . . .  25
     5.2.  Bundle Fragmentation and Reassembly . . . . . . . . . . .  26
   6.  Key Management  . . . . . . . . . . . . . . . . . . . . . . .  27
   7.  Security Policy Considerations  . . . . . . . . . . . . . . .  27
     7.1.  Security Reason Codes . . . . . . . . . . . . . . . . . .  28
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  29
     8.1.  Attacker Capabilities and Objectives  . . . . . . . . . .  30
     8.2.  Attacker Behaviors and BPSec Mitigations  . . . . . . . .  31
       8.2.1.  Eavesdropping Attacks . . . . . . . . . . . . . . . .  31
       8.2.2.  Modification Attacks  . . . . . . . . . . . . . . . .  32
       8.2.3.  Topology Attacks  . . . . . . . . . . . . . . . . . .  33
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