An ACME Profile for Generating Delegated STAR Certificates

Document Type Expired Internet-Draft (acme WG)
Last updated 2019-06-16 (latest revision 2018-12-13)
Replaces draft-sheffer-acme-star-delegation
Stream IETF
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo proposes a profile of the ACME protocol that allows the owner of an identifier (e.g., a domain name) to delegate to a third party access to a certificate associated with said identifier. A primary use case is that of a CDN (the third party) terminating TLS sessions on behalf of a content provider (the owner of a domain name). The presented mechanism allows the owner of the identifier to retain control over the delegation and revoke it at any time by cancelling the associated STAR certificate renewal with the ACME CA. Another key property of this mechanism is it does not require any modification to the deployed TLS ecosystem.


Yaron Sheffer (
Diego Lopez (
Antonio Pastor (
Thomas Fossati (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)