ACME Integrations
draft-friel-acme-integrations-01

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Network Working Group                                           O. Friel
Internet-Draft                                                 R. Barnes
Intended status: Standards Track                                   Cisco
Expires: January 3, 2020                                   July 02, 2019

                           ACME Integrations
                    draft-friel-acme-integrations-01

Abstract

   This document outlines multiple advanced use cases and integrations
   that ACME facilitates without any modifications or enhancements
   required to the base ACME specification.  These use cases are not
   immediately obvious from reading the ACME specification and thus are
   explicitly documented here.  The use cases include ACME issuance of
   subdomain certificates, and ACME integration with EST and TEAP.

Status of This Memo

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   This Internet-Draft will expire on January 3, 2020.

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
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   include Simplified BSD License text as described in Section 4.e of

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

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  ACME Issuance of Subdomain Certificates . . . . . . . . . . .   3
   4.  ACME Integration with EST . . . . . . . . . . . . . . . . . .   5
   5.  ACME Integration with BRSKI . . . . . . . . . . . . . . . . .   8
   6.  ACME Integration with TEAP  . . . . . . . . . . . . . . . . .  10
   7.  ACME Integration with TEAP-BRSKI  . . . . . . . . . . . . . .  13
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   10. Informative References  . . . . . . . . . . . . . . . . . . .  16
   Appendix A.  Comments . . . . . . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   ACME [RFC8555] defines a protocol that a certificate authority (CA)
   and an applicant can use to automate the process of domain name
   ownership validation and X.509 (PKIX) certificate issuance.  The
   protocol is rich and flexible and enables multiple use cases that are
   not immediately obvious from reading the specification.  This
   document explicitly outlines multiple advanced ACME use cases
   including:

   o  ACME issuance of subdomain certificates

   o  ACME integration with EST [RFC7030]

   o  ACME integration with BRSKI
      [I-D.ietf-anima-bootstrapping-keyinfra]

   o  ACME integration with TEAP [RFC7170]

   o  ACME integration with TEAP-BRSKI draft-lear-eap-teap-brski

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

   The following terms are used in this document:

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   o  BRSKI: Bootstrapping Remote Secure Key Infrastructures
      [I-D.ietf-anima-bootstrapping-keyinfra]

   o  CA: Certificate Authority

   o  CMC: Certificate Management over CMS

   o  CSR: Certificate Signing Request

   o  EST: Enrollment over Secure Transport [RFC7030]

   o  FQDN: Fully Qualified Domain Name

   o  RA: PKI Registration Authority

   o  TEAP: Tunneled Extensible Authentication Protocol [RFC7170]

3.  ACME Issuance of Subdomain Certificates
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