Using Secure DNS to Associate Certificates with Domain Names for S/MIME (RFC8162)
Original Publication Date: 2017-May-01
Included in the Prior Art Database: 2017-Jun-01
Internet Society Requests For Comment (RFCs)
P. Hoffman: AUTHOR [+1]
S/MIME [RFC5751] messages often contain a certificate (some messages contain more than one certificate). These certificates assist in authenticating the sender of the message and can be used for encrypting messages that will be sent in reply. In order for the S/MIME receiver to authenticate that a message is from the sender identified in the message, the receiver's Mail User Agent (MUA) must validate that this certificate is associated with the purported sender. Currently, the MUA must trust a trust anchor upon which the sender's certificate is rooted and must successfully validate the certificate. There are other requirements on the MUA, such as associating the identity in the certificate with that of the message, that are out of scope for this document.
Internet Engineering Task Force (IETF) P. Hoffman Request for Comments: 8162 ICANN Category: Experimental J. Schlyter ISSN: 2070-1721 Kirei AB May 2017
Using Secure DNS to Associate Certificates with Domain Names for S/MIME
This document describes how to use secure DNS to associate an S/MIME user's certificate with the intended domain name, similar to the way that DNS-Based Authentication of Named Entities (DANE), RFC 6698, does for TLS.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation.
This document defines an Experimental Protocol for the Internet community. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 7841.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc8162.
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Schlyter Experimental [Page 1]
RFC 8162 DNS-Based Authentication for S/MIME May 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Experiment Goal . . . . . . . . . . . . . . . . . . . . . 3
2. The SMIMEA Resource Record . . . . . . . . . . . . . . . ....