Simple Certificate Enrolment Protocol
draft-gutmann-scep-07

Document Type Active Internet-Draft (individual)
Last updated 2017-11-29
Replaces draft-nourse-scep
Stream IETF
Intended RFC status Historic
Formats plain text xml pdf html bibtex
Stream WG state (None)
Document shepherd Carl Wallace
IESG IESG state I-D Exists
Consensus Boilerplate Yes
Telechat date
Responsible AD Kathleen Moriarty
Send notices to Carl Wallace <carl@redhoundsoftware.com>
Network Working Group                                         P. Gutmann
Internet-Draft                                    University of Auckland
Intended status: Standards Track                       November 28, 2017
Expires: June 1, 2018

                 Simple Certificate Enrolment Protocol
                         draft-gutmann-scep-07

Abstract

   This document specifies the Simple Certificate Enrolment Protocol
   (SCEP), a PKI protocol that leverages existing technology by using
   CMS (formerly known as PKCS #7) and PKCS #10 over HTTP.  SCEP is the
   evolution of the enrolment protocol sponsored by Cisco Systems, which
   enjoys wide support in both client and server implementations, as
   well as being relied upon by numerous other industry standards that
   work with certificates.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on June 1, 2018.

Copyright Notice

   Copyright (c) 2017 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of

Gutmann                   Expires June 1, 2018                  [Page 1]
Internet-Draft                    SCEP                     November 2017

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Conventions Used in This Document . . . . . . . . . . . .   4
   2.  SCEP Overview . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  SCEP Entities . . . . . . . . . . . . . . . . . . . . . .   4
       2.1.1.  Client  . . . . . . . . . . . . . . . . . . . . . . .   4
       2.1.2.  Certificate Authority . . . . . . . . . . . . . . . .   5
       2.1.3.  CA Certificate Distribution . . . . . . . . . . . . .   5
     2.2.  Client authentication . . . . . . . . . . . . . . . . . .   6
     2.3.  Enrolment authorization . . . . . . . . . . . . . . . . .   7
     2.4.  Certificate Enrolment/Renewal . . . . . . . . . . . . . .   7
       2.4.1.  Client State Transitions  . . . . . . . . . . . . . .   8
     2.5.  Certificate Access  . . . . . . . . . . . . . . . . . . .   9
     2.6.  CRL Access  . . . . . . . . . . . . . . . . . . . . . . .  10
     2.7.  Certificate Revocation  . . . . . . . . . . . . . . . . .  11
     2.8.  Mandatory-to-Implement Functionality  . . . . . . . . . .  11
   3.  SCEP Secure Message Objects . . . . . . . . . . . . . . . . .  11
     3.1.  SCEP Message Object Processing  . . . . . . . . . . . . .  13
     3.2.  SCEP pkiMessage . . . . . . . . . . . . . . . . . . . . .  13
       3.2.1.  Signed Transaction Attributes . . . . . . . . . . . .  13
         3.2.1.1.  transactionID . . . . . . . . . . . . . . . . . .  15
         3.2.1.2.  messageType . . . . . . . . . . . . . . . . . . .  15
         3.2.1.3.  pkiStatus . . . . . . . . . . . . . . . . . . . .  16
         3.2.1.4.  failInfo  . . . . . . . . . . . . . . . . . . . .  16
         3.2.1.5.  senderNonce and recipientNonce  . . . . . . . . .  17
       3.2.2.  SCEP pkcsPKIEnvelope  . . . . . . . . . . . . . . . .  17
     3.3.  SCEP pkiMessage types . . . . . . . . . . . . . . . . . .  17
       3.3.1.  PKCSReq/RenewalReq  . . . . . . . . . . . . . . . . .  17
       3.3.2.  CertRep . . . . . . . . . . . . . . . . . . . . . . .  18
         3.3.2.1.  CertRep SUCCESS . . . . . . . . . . . . . . . . .  18
         3.3.2.2.  CertRep FAILURE . . . . . . . . . . . . . . . . .  19
         3.3.2.3.  CertRep PENDING . . . . . . . . . . . . . . . . .  19
       3.3.3.  CertPoll (GetCertInitial) . . . . . . . . . . . . . .  19
       3.3.4.  GetCert . . . . . . . . . . . . . . . . . . . . . . .  20
       3.3.5.  GetCRL  . . . . . . . . . . . . . . . . . . . . . . .  21
     3.4.  Degenerate certificates-only CMS Signed-Data  . . . . . .  21
     3.5.  CA Capabilities . . . . . . . . . . . . . . . . . . . . .  21
Show full document text