Re: [quicwg/base-drafts] Discard Initial keys as soon as possible (#2045)

janaiyengar <> Tue, 04 December 2018 04:35 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 8DD80130DE9 for <>; Mon, 3 Dec 2018 20:35:28 -0800 (PST)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -9.46
X-Spam-Status: No, score=-9.46 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.46, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: (amavisd-new); dkim=pass (1024-bit key)
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id Dx6yiBZ5s3vp for <>; Mon, 3 Dec 2018 20:35:25 -0800 (PST)
Received: from ( []) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id A602F128CB7 for <>; Mon, 3 Dec 2018 20:35:25 -0800 (PST)
Date: Mon, 03 Dec 2018 20:35:24 -0800
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=pf2014; t=1543898124; bh=BTwGlR41G/dAaE67qDV/Qc5Lvb5v3y+I6TMPy1cwm4U=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=H9SLhcW5H9qukHbXH2zFdwb3kxblROL3R0V4UlEhWM2+fnyKmaGcug54syxXfQF/A 9L9LI1D5x4eWE28eI/bMajIVKFQM0gpQSyPIVqy+fzY/QwQn4Rlf8wDv6EfI9hENIV cNSSgvBzzfw7rg3MzWNRwkSOngGVtL8SBL1gKbpk=
From: janaiyengar <>
Reply-To: quicwg/base-drafts <>
To: quicwg/base-drafts <>
Cc: Subscribed <>
Message-ID: <quicwg/base-drafts/pull/2045/review/>
In-Reply-To: <quicwg/base-drafts/pull/>
References: <quicwg/base-drafts/pull/>
Subject: Re: [quicwg/base-drafts] Discard Initial keys as soon as possible (#2045)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5c06040cb54bd_46143fd8080d45c438293d"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: janaiyengar
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
Archived-At: <>
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Tue, 04 Dec 2018 04:35:28 -0000

janaiyengar commented on this pull request.

> @@ -3592,6 +3594,21 @@ and will contain a CRYPTO frame with an offset matching the size of the CRYPTO
 frame sent in the first Initial packet.  Cryptographic handshake messages
 subsequent to the first do not need to fit within a single UDP datagram.
+### Abandoning Initial Packets {#discard-initial}
+A client stops both sending and accepting Initial packets when it sends its
+first Handshake packet.  A server stops sending and accepting Initial packets
+when it receives its first Handshake packet.  Though packets might still be in
+flight or awaiting acknowledgment, no further Initial packets need to be
+exchanged beyond this point.  Initial packet protection keys are discarded (see
+Section 4.10 of {{QUIC-TLS}}) along with any loss recovery and congestion
+control state (see Sections and 6.9 of {{QUIC-RECOVERY}}).

Good points. I'd say the conservative approach is the one @martinthomson suggests. I wonder if it might be better to be more explicit about it though, but I'll save that for another PR I think.

You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub: