Lightweight Industrial CMP Profile
draft-brockhaus-lamps-industrial-cmp-profile-00

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Last updated 2019-03-11
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Internet Engineering Task Force                             H. Brockhaus
Internet-Draft                                                  S. Fries
Updates: 4210 (if approved)                                D. von Oheimb
Intended status: Standards Track                                 Siemens
Expires: September 12, 2019                               March 11, 2019

                   Lightweight Industrial CMP Profile
            draft-brockhaus-lamps-industrial-cmp-profile-00

Abstract

   The goal of this document is to facilitate interoperability and
   automation by profiling the Certificate Management Protocol (CMP)
   [RFC4210] and the related Certificate Request Message Format (CRMF)
   [RFC4211].  It specifies a subset of CMP and CRMF focusing on typical
   uses cases relevant for managing certificates of devices in
   industrial and IoT scenarios.  To limit the overhead of certificate
   management for constrained devices only the most crucial types of
   transactions are specified as mandatory.  To foster interoperability
   also in more complex scenarios, other types of transactions are
   specified as recommended or optional.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 12, 2019.

Copyright Notice

   Copyright (c) 2019 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
   (https://trustee.ietf.org/license-info) in effect on the date of

Brockhaus, et al.      Expires September 12, 2019               [Page 1]
Internet-Draft               Lightweight CMP                  March 2019

   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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Motivation for profiling CMP  . . . . . . . . . . . . . .   3
     1.2.  Motivation for an industrial profile for CMP  . . . . . .   4
     1.3.  Existing CMP profiles . . . . . . . . . . . . . . . . . .   5
     1.4.  Compatibility with existing CMP profiles  . . . . . . . .   5
     1.5.  Scope of this document  . . . . . . . . . . . . . . . . .   6
     1.6.  Structure of this document  . . . . . . . . . . . . . . .   7
     1.7.  Convention and Terminology  . . . . . . . . . . . . . . .   7
   2.  Architecture and use cases  . . . . . . . . . . . . . . . . .   8
     2.1.  Solution architecture . . . . . . . . . . . . . . . . . .   8
     2.2.  Basic generic CMP message content . . . . . . . . . . . .   9
     2.3.  Supported use cases . . . . . . . . . . . . . . . . . . .   9
       2.3.1.  Mandatory use cases . . . . . . . . . . . . . . . . .  10
       2.3.2.  Recommended Use Cases . . . . . . . . . . . . . . . .  10
       2.3.3.  Optional use cases  . . . . . . . . . . . . . . . . .  11
     2.4.  CMP message transport . . . . . . . . . . . . . . . . . .  11
   3.  Generic parts of the PKI message  . . . . . . . . . . . . . .  12
     3.1.  General description of the CMP message header . . . . . .  13
     3.2.  General description of the CMP message protection . . . .  15
     3.3.  General description of CMP message extraCerts . . . . . .  15
   4.  End Entity focused certificate management use cases . . . . .  15
     4.1.  Requesting a new certificate from a PKI . . . . . . . . .  16
       4.1.1.  A certificate from a new PKI with signature
               protection  . . . . . . . . . . . . . . . . . . . . .  17
       4.1.2.  Update an existing certificate with signature
               protection  . . . . . . . . . . . . . . . . . . . . .  22
       4.1.3.  A certificate from a PKI with MAC protection  . . . .  24
       4.1.4.  A certificate from a legacy PKI using PKCS#10 request  25
       4.1.5.  Generate the key pair centrally at the (L)RA/CA . . .  26
       4.1.6.  Delayed enrollment  . . . . . . . . . . . . . . . . .  26
       4.1.7.  Omitted confirmation  . . . . . . . . . . . . . . . .  27
     4.2.  Revoking a certificate  . . . . . . . . . . . . . . . . .  27
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