Simple Certificate Enrollment Protocol
draft-nourse-scep-23

Internet Engineering Task Force                         M. Pritikin, Ed.
Internet-Draft                                                 A. Nourse
Intended status: Historic                                    J. Vilhuber
Expires: March 10, 2012                               Cisco Systems, Inc
                                                       September 7, 2011

                 Simple Certificate Enrollment Protocol
                          draft-nourse-scep-23

Abstract

   This document specifies the Simple Certificate Enrollment Protocol
   (SCEP), a Public Key Infrastructure (PKI) communication protocol
   which leverages existing technology by using PKCS#7 and PKCS#10 over
   HTTP.  SCEP is the evolution of the enrollment protocol developed by
   VeriSign, Inc. for Cisco Systems, Inc. It now enjoys wide support in
   both client and a Certification Authority implementations.

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   This Internet-Draft will expire on March 10, 2012.

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Pritikin, et al.         Expires March 10, 2012                 [Page 1]
Internet-Draft                    SCEP                    September 2011

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5
     1.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  6
   2.  SCEP Overview  . . . . . . . . . . . . . . . . . . . . . . . .  6
     2.1.  SCEP Entities  . . . . . . . . . . . . . . . . . . . . . .  6
       2.1.1.  Requester  . . . . . . . . . . . . . . . . . . . . . .  6
       2.1.2.  Certification Authority  . . . . . . . . . . . . . . .  7
       2.1.3.  Registration Authority . . . . . . . . . . . . . . . .  8
     2.2.  Requester authentication . . . . . . . . . . . . . . . . .  8
     2.3.  Enrollment authorization . . . . . . . . . . . . . . . . .  9
     2.4.  CA/RA Certificate Distribution . . . . . . . . . . . . . . 11
     2.5.  Certificate Enrollment . . . . . . . . . . . . . . . . . . 11
       2.5.1.  Client State Transitions . . . . . . . . . . . . . . . 12
     2.6.  Certificate Access . . . . . . . . . . . . . . . . . . . . 14
     2.7.  CRL Access . . . . . . . . . . . . . . . . . . . . . . . . 14
     2.8.  Certificate Revocation . . . . . . . . . . . . . . . . . . 15
   3.  SCEP Secure Message Objects  . . . . . . . . . . . . . . . . . 16
     3.1.  SCEP pkiMessage  . . . . . . . . . . . . . . . . . . . . . 17
       3.1.1.  Signed Transaction Attributes  . . . . . . . . . . . . 18
         3.1.1.1.  transactionID  . . . . . . . . . . . . . . . . . . 18
         3.1.1.2.  messageType  . . . . . . . . . . . . . . . . . . . 19
         3.1.1.3.  pkiStatus  . . . . . . . . . . . . . . . . . . . . 19
         3.1.1.4.  failInfo . . . . . . . . . . . . . . . . . . . . . 19
         3.1.1.5.  senderNonce and recipientNonce . . . . . . . . . . 20