EST Extensions
draft-turner-est-extensions-08

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Last updated 2017-06-13 (latest revision 2017-01-22)
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Network Working Group                                        Sean Turner
Internet Draft                                                     sn3rd
Intended Status: Standards Track                        January 22, 2017
Expires: July 26, 2017                                                  

                             EST Extensions
                   draft-turner-est-extensions-08.txt

Abstract

   The EST (Enrollment over Secure Transport) protocol defined a Well-
   Known URI (Uniform Resource Identifier): /.well-known/est.  EST also
   defined several path components that clients use for PKI (Public Key
   Infrastructure) services, namely certificate enrollment (e.g.,
   /simpleenroll).  In some sense, the services provided by the path
   components can be thought of as PKI management-related packages. 
   There are additional PKI-related packages a client might need as well
   as other security-related packages, such as firmware, trust anchors,
   and symmetric, asymmetric, and encrypted keys.  This document also
   specifies the PAL (Package Availability List), which is an XML
   (Extensible Markup Language) file or JSON (Javascript Object
   Notation) object that clients use to retrieve packages available and
   authorized for them.  This document extends the EST server path
   components to provide these additional services. 

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 http://datatracker.ietf.org/drafts/current/.

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   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."

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

Turner                   Expires July 26, 2017                  [Page 1]
Internet-Draft               EST Extensions             January 22, 2017

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

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Definitions  . . . . . . . . . . . . . . . . . . . . . . .  5
     1.2.  Authentication and Authorization . . . . . . . . . . . . .  6
     1.3.  TLS Cipher Suites  . . . . . . . . . . . . . . . . . . . .  6
     1.4.  URI Configuration  . . . . . . . . . . . . . . . . . . . .  6
     1.5.  Content-Transfer-Encoding  . . . . . . . . . . . . . . . .  6
     1.6.  Message Types  . . . . . . . . . . . . . . . . . . . . . .  7
     1.7.  Key Words  . . . . . . . . . . . . . . . . . . . . . . . .  9
   2.  Locate Available Packages  . . . . . . . . . . . . . . . . . .  9
     2.1.  PAL Format . . . . . . . . . . . . . . . . . . . . . . . . 10
       2.1.1.  PAL Package Types  . . . . . . . . . . . . . . . . . . 11
       2.1.2.  PAL XML Schema . . . . . . . . . . . . . . . . . . . . 16
       2.1.3.  PAL JSON Object  . . . . . . . . . . . . . . . . . . . 19
     2.2.  Request PAL  . . . . . . . . . . . . . . . . . . . . . . . 20
     2.3.  Provide PAL  . . . . . . . . . . . . . . . . . . . . . . . 20
   3.  Distribute EE Certificates . . . . . . . . . . . . . . . . . . 21
     3.1.  EE Certificate Request . . . . . . . . . . . . . . . . . . 22
     3.2.  EE Certificate Response  . . . . . . . . . . . . . . . . . 22
   4.  Distribute CRLs and ARLs . . . . . . . . . . . . . . . . . . . 22
     4.1.  CRL Request  . . . . . . . . . . . . . . . . . . . . . . . 23
     4.2.  CRL Response . . . . . . . . . . . . . . . . . . . . . . . 23
   5. Symmetric Keys, Receipts, and Errors  . . . . . . . . . . . . . 23
     5.1.  Symmetric Keys . . . . . . . . . . . . . . . . . . . . . . 23
       5.1.1.  Distribute Symmetric Keys  . . . . . . . . . . . . . . 24
       5.1.2.  Symmetric Key Response . . . . . . . . . . . . . . . . 24
     5.2.  Symmetric Key Receipts and Errors  . . . . . . . . . . . . 25
       5.2.1.  Provide Symmetric Key Receipt or Error . . . . . . . . 26
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