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

Document Type Active Internet-Draft (lamps WG)
Last updated 2020-05-26 (latest revision 2020-05-06)
Replaces draft-richardson-lamps-rfc7030est-clarify
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LAMPS Working Group                                        M. Richardson
Internet-Draft                                  Sandelman Software Works
Updates: RFC7030 (if approved)                                 T. Werner
Intended status: Standards Track                                 Siemens
Expires: November 7, 2020                                         W. Pan
                                                     Huawei Technologies
                                                            May 06, 2020

   Clarification of Enrollment over Secure Transport (EST): transfer
                          encodings and ASN.1
                 draft-ietf-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
   cause interoperability issues when RFC7030 was extended.

   This document deprecates the specification of "Content-Transfer-
   Encoding" headers for EST endpoints.  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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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 7, 2020.

Copyright Notice

   Copyright (c) 2020 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

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   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Changes to EST endpoint processing  . . . . . . . . . . . . .   3
     3.1.  Whitespace processing . . . . . . . . . . . . . . . . . .   4
   4.  Clarification of ASN.1 for Certificate Attribute set. . . . .   4
     4.1.  CSR Attributes Response . . . . . . . . . . . . . . . . .   4
   5.  Clarification of error messages for certificate enrollment
       operations  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  Updating section 4.2.3: Simple Enroll and Re-enroll
           Response  . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.2.  Updating section 4.4.2: Server-Side Key Generation
           Response  . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   7
     10.2.  Informative References . . . . . . . . . . . . . . . . .   9
   Appendix A.  ASN.1 Module . . . . . . . . . . . . . . . . . . . .  10
   Appendix B.  FAKE REFERENCES  . . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

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.  However, [RFC7030]
   incorrectly uses this header.

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   Changes to [RFC7030] to bring it inline with typical HTTP processing
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