Clarification of Enrollment over Secure Transport (EST): transfer encodings and ASN.1
draft-richardson-lamps-rfc7030est-clarify-05

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LAMPS Working Group                                        M. Richardson
Internet-Draft                                  Sandelman Software Works
Intended status: Standards Track                               T. Werner
Expires: May 6, 2020                                             Siemens
                                                                  W. Pan
                                                     Huawei Technologies
                                                       November 03, 2019

   Clarification of Enrollment over Secure Transport (EST): transfer
                          encodings and ASN.1
              draft-richardson-lamps-rfc7030est-clarify-05

Abstract

   This document updates RFC7030: Enrollment over Secure Transport (EST)
   to resolve some errata that was reported, and which has proven to
   have interoperability when RFC7030 has been extended.

   This document deprecates the specification of "Content-Transfer-
   Encoding" headers for EST endpoints, providing a way to do this in an
   upward compatible way.  This document additional defines a GRASP
   discovery mechanism for EST endpoints, and specifies requirements for
   them.

   Finally, this document fixes some syntactical errors in ASN.1 that
   was presented.

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
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   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 May 6, 2020.

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

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   4.  Changes to EST endpoint processing  . . . . . . . . . . . . .   3
   5.  Clarification of ASN.1 for Certificate Attribute set. . . . .   4
     5.1.  CSR Attributes Response . . . . . . . . . . . . . . . . .   4
   6.  Clarification of error messages for certificate enrollment
       operations  . . . . . . . . . . . . . . . . . . . . . . . . .   6
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   6
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     11.2.  Informative References . . . . . . . . . . . . . . . . .   7
   Appendix A.  ASN.1 Module . . . . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   [RFC7030] defines the Enrollment over Secure Transport, or EST
   protocol.

   This specification defines a number of HTTP end points for
   certificate enrollment and management.  The details of the
   transaction were defined in terms of MIME headers as defined in
   [RFC2045], rather than in terms of the HTTP protocol as defined in
   [RFC2616] and [RFC7230].

   [RFC2616] and later [RFC7231] Appendix A.5 has text specifically
   deprecating Content-Transfer-Encoding.

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   [RFC7030] calls it out this header incorrectly.

   [I-D.ietf-anima-bootstrapping-keyinfra] extends [RFC7030], adding new
   functionality, and interop testing of the protocol has revealed that
   unusual processing called out in [RFC7030] causes confusion.