[Lake] Re: New Version Notification for draft-selma-lake-additional-messages-00.txt
Göran Selander <goran.selander@ericsson.com> Tue, 03 November 2026 08:52 UTC
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From: Göran Selander <goran.selander@ericsson.com>
To: lake <lake@ietf.org>
Thread-Topic: New Version Notification for draft-selma-lake-additional-messages-00.txt
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Date: Tue, 03 Nov 2026 08:52:19 +0000
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Subject: [Lake] Re: New Version Notification for draft-selma-lake-additional-messages-00.txt
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Hi, We uploaded a new draft on generic additional messages for LAKE/EDHOC, beyond those defined by the method. This supports, for example, use cases when there is a need to carry additional External Authorization Data (EAD) or to convey protected success indications when required by method or deployment, such as when using EAP. The construction is straightforward: same format as message_4 in RFC 9528 but encrypted with keys derived from the final exporter. Comments are most welcome! Can we have a short slot on the IETF 127 agenda, for presentation and potential discussion? Göran From: internet-drafts@ietf.org <internet-drafts@ietf.org> Date: Monday, 2 November 2026 at 21:19 To: Göran Selander <goran.selander@ericsson.com>; John Mattsson <john.mattsson@ericsson.com>; Subject: New Version Notification for draft-selma-lake-additional-messages-00.txt A new version of Internet-Draft draft-selma-lake-additional-messages-00.txt has been successfully submitted by Göran Selander and posted to the IETF repository. Name: draft-selma-lake-additional-messages Revision: 00 Title: Additional Messages in Lightweight Authenticated Key Exchange (LAKE) Date: 2026-11-02 Group: Individual Submission Pages: 16 URL: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Farchive%2Fid%2Fdraft-selma-lake-additional-messages-00.txt&data=05%7C02%7Cgoran.selander%40ericsson.com%7Cde56150299224a8cc56808df391e8a8c%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639292475480730897%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=U6mNC1yM3QTiUz4FKkU2xAjf4GgjEVxxWhHcMlZHTSU%3D&reserved=0<https://www.ietf.org/archive/id/draft-selma-lake-additional-messages-00.txt> Status: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-selma-lake-additional-messages%2F&data=05%7C02%7Cgoran.selander%40ericsson.com%7Cde56150299224a8cc56808df391e8a8c%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639292475480758434%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=sIj4ZF%2FgWXL63zJlpEHlKNP2vYyGlnhRy99eTHj6nvE%3D&reserved=0<https://datatracker.ietf.org/doc/draft-selma-lake-additional-messages/> HTML: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Farchive%2Fid%2Fdraft-selma-lake-additional-messages-00.html&data=05%7C02%7Cgoran.selander%40ericsson.com%7Cde56150299224a8cc56808df391e8a8c%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639292475480778385%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=uiH1yo2Wy25R%2FaHHVpHZyuzz5bHlihpqWVIX3LKQ1Pk%3D&reserved=0<https://www.ietf.org/archive/id/draft-selma-lake-additional-messages-00.html> HTMLized: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-selma-lake-additional-messages&data=05%7C02%7Cgoran.selander%40ericsson.com%7Cde56150299224a8cc56808df391e8a8c%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639292475480797477%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=LtZsi7kzebg51jJ67oS8E9M%2BId%2F%2Fr21Obcc4kkPjcGc%3D&reserved=0<https://datatracker.ietf.org/doc/html/draft-selma-lake-additional-messages> Abstract: The Lightweight Authenticated Key Exchange (LAKE) protocol supports methods with different numbers of messages and different security properties. The methods defined in the original specification, RFC 9528, consist of three mandatory messages and an optional fourth message. This document defines a generic mechanism for additional protected messages, message_n, where n is greater than the highest message number defined for the method in use. The format of each message_n is identical to that of message_4 in RFC 9528, except that its encryption key and initialization vector are derived using the LAKE_Exporter. This mechanism allows applications to include any number of additional protected messages in a LAKE session, for example, to carry additional External Authorization Data (EAD) and to convey protected success indications when required by a method or deployment, such as EAP-LAKE. This document updates RFC 9528. The IETF Secretariat
- [Lake] Re: New Version Notification for draft-sel… Göran Selander