TICTOC Security Requirements
draft-ietf-tictoc-security-requirements-00

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Document Type Active Internet-Draft (tictoc WG)
Author Tal Mizrahi 
Last updated 2011-11-29
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TICTOC Working Group                                         Tal Mizrahi
Internet Draft                                                   Marvell
Intended status: Informational                          Karen O'Donoghue
Expires: May 2012                                                   ISOC
                                                       November 30, 2011

                       TICTOC Security Requirements
              draft-ietf-tictoc-security-requirements-00.txt

Abstract

   As time synchronization protocols are becoming increasingly common
   and widely deployed, concern about their exposure to various security
   threats is increasing. This document defines a set of requirements
   for security solutions for time synchronization protocols, focusing
   on the IEEE 1588 and NTP. This document also discusses the security
   impacts of time synchronization protocol practices, the time
   synchronization performance implications of external security
   practices, the dependencies between other security services and time
   synchronization.

Status of this Memo

   This Internet-Draft is submitted to IETF 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 May 30, 2012.

Mizrahi, O'Donoghue     Expires May 30, 2012                  [Page 1]
Internet-Draft      TICTOC Security Requirements         November 2011

Copyright Notice

   Copyright (c) 2011 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
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   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 ................................................. 3
   2. Conventions Used in this Document ............................ 4
      2.1. Terminology ............................................. 4
      2.2. Abbreviations ........................................... 4
   3. Security Threats ............................................. 4
      3.1. Packet interception and manipulation .................... 5
      3.2. Spoofing ................................................ 5
      3.3. Replay attack ........................................... 5
      3.4. Rogue master attack ..................................... 5
      3.5. Packet Interception and Removal ......................... 5
      3.6. Packet delay manipulation ............................... 5
      3.7. Cryptographic performance attacks ....................... 6
      3.8. DoS attacks ............................................. 6
      3.9. Time source spoofing (e.g. GPS fraud) ................... 6
   4. Security Requirements ........................................ 6
      4.1. Clock Identity Authentication ........................... 6
         4.1.1. Authentication and Proventication of Masters ....... 6
         4.1.2. Authentication of Slaves ........................... 7
         4.1.3. PTP: Authentication of Transparent Clocks........... 7
         4.1.4. PTP: Authentication of Announce Messages ........... 8
      4.2. Data integrity .......................................... 8
         4.2.1. PTP: Hop-by-hop vs. End-to-end Integrity Protection  8
            4.2.1.1. Hop by Hop Integrity Protection ............... 9
            4.2.1.2. End to End Integrity Protection ............... 9
      4.3. Availability ........................................... 10
      4.4. Replay Protection ...................................... 10
      4.5. Cryptographic Keys & Security Associations ............. 10
         4.5.1. Security Association .............................. 10
         4.5.2. Unicast and Multicast ............................. 10
         4.5.3. Key Freshness ..................................... 11
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