<?xml version="1.0" encoding="UTF-8"?>
<reference anchor="I-D.urien-tls-im-trusted-exporter" target="https://datatracker.ietf.org/doc/html/draft-urien-tls-im-trusted-exporter-00">
   <front>
      <title>TLS 1.3 Identity Module Trusted Exporter</title>
      <author initials="P." surname="Urien" fullname="Pascal Urien">
         <organization>Telecom Paris</organization>
      </author>
      <date month="May" day="28" year="2026" />
      <abstract>
	 <t>   The Transport Layer Security (TLS) 1.3 protocol supports external
   Pre-Shared Keys (PSKs), which are provisioned out of band. A PSK
   binder, included in the ClientHello message, is computed as an HMAC
   over a transcript hash using a key called the Finished External Key
   (FEK). For the &quot;PSK with (EC)DHE&quot; key exchange mode, where Diffie-
   Hellman is performed over either finite fields or elliptic curves,
   the Handshake Secret (HS) is computed from the (EC)DHE shared secret
   using HKDF-Extract with a key called the Derived Secret Key (DSK),
   which is derived from the PSK. A TLS identity module SHOULD be used
   to protect procedures involving keys bound to the PSK, such as the
   FEK or the DSK. TLS defines keying material exporters, which rely on
   secrets produced during the handshake protocol. This draft
   introduces an Exporter Trusted Key (ETK), which is securely stored
   and used within a TLS identity module. The ETK transforms exporter
   secrets into trusted values that cannot be recovered by TLS
   software. A trusted exporter is similar to the legacy TLS exporter,
   but it uses an additional trusted secret.



	 </t>
      </abstract>
   </front>
   <seriesInfo name="Internet-Draft" value="draft-urien-tls-im-trusted-exporter-00" />
   
</reference>
