Actors in the ACE Architecture
draft-gerdes-ace-actors-00

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ACE Working Group                                              S. Gerdes
Internet-Draft                                   Universitaet Bremen TZI
Intended status: Informational                              May 30, 2014
Expires: December 1, 2014

                     Actors in the ACE Architecture
                       draft-gerdes-ace-actors-00

Abstract

   Constrained nodes are small devices which are limited in terms of
   processing power, memory, non-volatile storage and transmission
   capacity.  Due to these constraints, commonly used security protocols
   are not easily applicable.  Nevertheless, an authentication and
   authorization solution is needed to ensure the security of these
   devices.

   This document defines actors in the security architecture for
   authentication and authorization, analyzes the relationships between
   them, and describes their respective tasks and characteristics.  This
   knowledge will then be used to derive requirements for the
   communication between the actors.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on December 1, 2014.

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

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   (http://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Actors  . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Constrained Level Actors  . . . . . . . . . . . . . . . .   4
     3.2.  Principal Level Actors  . . . . . . . . . . . . . . . . .   5
     3.3.  Less-Constrained Level Actors . . . . . . . . . . . . . .   5
   4.  Protocol Requirements . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Constrained Level Protocols . . . . . . . . . . . . . . .   6
       4.1.1.  Cross Level Support Protocols . . . . . . . . . . . .   7
     4.2.  Less-Constrained Level Protocols  . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   7
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   Constrained nodes are small devices with limited abilities which in
   many cases are made to fulfill a single simple task.  They have
   limited system resources such as processing power, memory, non-
   volatile storage and transmission capacity and additionally in most
   cases do not have user interfaces and displays.  Due to these
   constraints, commonly used security protocols are not always easily
   applicable.

   Constrained nodes are expected to be integrated in all aspects of
   every day live and thus will be trusted with a lot of personal data.
   Without appropriate security mechanisms attackers might gain control
   over things relevant to our lives.  Authentication and authorization
   mechanisms are therefore prerequisites for a secure Internet of
   Things.

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   The Authentication and Authorization in Constrained Environments
   (ACE) Working Group aims at defining a solution for authenticated and
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