IETF Logo Mail Archive

Re: [quicwg/base-drafts] Example of ChaCha20-Poly1305 (#3712)

Martin Thomson <notifications@github.com> Tue, 02 June 2020 10:13 UTC

Return-Path: <noreply@github.com>
X-Original-To: quic-issues@ietfa.amsl.com
Delivered-To: quic-issues@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6D9C23A07BE for <quic-issues@ietfa.amsl.com>; Tue, 2 Jun 2020 03:13:49 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -0.983
X-Spam-Level:
X-Spam-Status: No, score=-0.983 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_24=1.618, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, PDS_BTC_ID=0.5, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=no autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UBT-0o54drcf for <quic-issues@ietfa.amsl.com>; Tue, 2 Jun 2020 03:13:48 -0700 (PDT)
Received: from out-23.smtp.github.com (out-23.smtp.github.com [192.30.252.206]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3574C3A07B1 for <quic-issues@ietf.org>; Tue, 2 Jun 2020 03:13:48 -0700 (PDT)
Received: from github-lowworker-e8b54ca.ac4-iad.github.net (github-lowworker-e8b54ca.ac4-iad.github.net [10.52.23.39]) by smtp.github.com (Postfix) with ESMTP id 78E0766045A for <quic-issues@ietf.org>; Tue, 2 Jun 2020 03:13:47 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1591092827; bh=YxPlMzbidXGX8N0cP7CtMr7j74NW0PZrDmETMnlaInU=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=su4ne1PSWJ1GgLa4HfM9/NiaYYUK5hQbQcma3xbgcPFqcEAyuq9IXU8tFKrG8nheh 1IJ0xuWpQLjp0eYVojV7KKONyinlgQHQ3oEnVwGL3fdsBiCS2kNe3fYA8UtMZ/cYQl HnGxBiRWVUUYGUrizvRCw20sSxILzGcNUxM5RezA=
Date: Tue, 02 Jun 2020 03:13:47 -0700
From: Martin Thomson <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJK5R5DAYLTM6DCEMBJ544IDVXEVBNHHCK7K3HI@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/3712/review/422535584@github.com>
In-Reply-To: <quicwg/base-drafts/pull/3712@github.com>
References: <quicwg/base-drafts/pull/3712@github.com>
Subject: Re: [quicwg/base-drafts] Example of ChaCha20-Poly1305 (#3712)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5ed6265b69e23_49303f975f8cd9682373e2"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: martinthomson
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/SCx4npHQVqciS9ORNk9i9OkZ-UU>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic-issues/>
List-Post: <mailto:quic-issues@ietf.org>
List-Help: <mailto:quic-issues-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 02 Jun 2020 10:13:49 -0000

@martinthomson commented on this pull request.



> +      73573685608597d0efcb076b0ab7a7a4
+
+ku  = HKDF-Expand-Label(server_initial_secret, "quic ku", _, 32)
+    = 1223504755036d556342ee9361d25342
+      1a826c9ecdf3c7148684b36b714881f9
+~~~
+
+The following shows the steps involved in protecting a minimal packet with an
+empty Destination Connection ID. This packet contains a single HANDSHAKE_DONE
+frame (that is, a payload of just 0x1e) and has a packet number of 0. In this
+example, a packet number of length 3 is used to avoid having to pad the payload
+of the packet; PADDING frames would be needed if the packet number is encoded
+on fewer octets.
+
+~~~
+pn                 = 0

This packet was from me reading the logs of our implementation, which sends HANDSHAKE_DONE in packet 0.  But I decided that it might be better to make this reproducible, and it wasn't THAT hard to write some JS.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/quicwg/base-drafts/pull/3712#discussion_r433768945

v2.23.0 | Report a Bug | By Email