Re: [quicwg/base-drafts] CID's should be compared in constant time (#2477)

Jana Iyengar <> Tue, 19 February 2019 03:09 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 2B27A130DD8 for <>; Mon, 18 Feb 2019 19:09:29 -0800 (PST)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -6.597
X-Spam-Status: No, score=-6.597 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, HTML_IMAGE_ONLY_28=1.404, 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 zdPaW1Th7a6a for <>; Mon, 18 Feb 2019 19:09:27 -0800 (PST)
Received: from ( []) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id D81E1130E5A for <>; Mon, 18 Feb 2019 19:09:22 -0800 (PST)
Date: Mon, 18 Feb 2019 19:09:21 -0800
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=pf2014; t=1550545761; bh=Z8WEpRLFXBcKkVcvt81KNOyduVGLLnWXZu4rbYxoTQ0=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=NYaSNWpIjaYqulf+x71kJLwSeZTfFjMhf5VG34Xh9uiXL1WApQnCONBqxmy64idzr DCwSEZu99MkBrDjnmdUTC6fc5KmRa7ljZE9JgztgyKLgFYXOZ9iapECH1+MiZIVZGB gE4ki7x2lbf2/hV6MEQ8b20iTLSPdtOrYax7pzAk=
From: Jana Iyengar <>
Reply-To: quicwg/base-drafts <>
To: quicwg/base-drafts <>
Cc: Subscribed <>
Message-ID: <quicwg/base-drafts/issues/2477/>
In-Reply-To: <quicwg/base-drafts/issues/>
References: <quicwg/base-drafts/issues/>
Subject: Re: [quicwg/base-drafts] CID's should be compared in constant time (#2477)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5c6b7361cbefc_62283ff6cc2d45bc23674a0"; 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, 19 Feb 2019 03:09:29 -0000

I agree with @martinthomson that we've assumed decryption to be relatively cheap, and that being able to guess a CID is therefore not a particularly interesting attack.  I don't think this issue warrants any language in the spec.

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