A new Request for Comments is now available in online RFC libraries.
RFC 9444
Title: Automated Certificate Management Environment (ACME)
for Subdomains
Author: O. Friel,
R. Barnes,
T. Hollebeek,
M. Richardson
Status: Standards Track
Stream: IETF
Date: August 2023
Mailbox: [email protected],
[email protected],
[email protected],
[email protected]
Pages: 20
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-acme-subdomains-07.txt
URL: https://www.rfc-editor.org/info/rfc9444
DOI: 10.17487/RFC9444
This document specifies how Automated Certificate Management
Environment (ACME) can be used by a client to obtain a certificate
for a subdomain identifier from a certification authority.
Additionally, this document specifies how a client can fulfill a
challenge against an ancestor domain but may not need to fulfill a
challenge against the explicit subdomain if certification authority
policy allows issuance of the subdomain certificate without explicit
subdomain ownership proof.
This document is a product of the Automated Certificate Management Environment
Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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