Re: [quicwg/base-drafts] Encrypting Retry token (#3274)

Dmitri Tikhonov <notifications@github.com> Tue, 03 December 2019 15:50 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 BC8B71200A1 for <quic-issues@ietfa.amsl.com>; Tue, 3 Dec 2019 07:50:48 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.454
X-Spam-Level:
X-Spam-Status: No, score=-6.454 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_20=1.546, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham 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 BSV6M8djyu_Q for <quic-issues@ietfa.amsl.com>; Tue, 3 Dec 2019 07:50:47 -0800 (PST)
Received: from out-22.smtp.github.com (out-22.smtp.github.com [192.30.252.205]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 548F512006B for <quic-issues@ietf.org>; Tue, 3 Dec 2019 07:50:47 -0800 (PST)
Received: from github-lowworker-2ef7ba1.ac4-iad.github.net (github-lowworker-2ef7ba1.ac4-iad.github.net [10.52.16.66]) by smtp.github.com (Postfix) with ESMTP id 90B79A03B2 for <quic-issues@ietf.org>; Tue, 3 Dec 2019 07:50:46 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1575388246; bh=UCB6Z4xHP2PgViFBFD7uLZOyauq/iqTs/uG0bTsABOg=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=dgn7cyjGa3TQIFcPbHC0O0OmWLfVKv2Ws8Fl8zpNwG/6PZuuILjoTzwGpEv1aDM1o I/DcclA+kmGQxl3BC6oLMOXAeg0AfgQfon680Oh/cuCoRRZZ6oIyND3TnAchjaaJNw cTcEUf3XUVfB49KIwof8J9jwJY+p1ERRbkKKVs7k=
Date: Tue, 03 Dec 2019 07:50:46 -0800
From: Dmitri Tikhonov <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJK47SMZ66BRFDZCRFUN36O3NNEVBNHHB7CUNWA@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/issues/3274/561229121@github.com>
In-Reply-To: <quicwg/base-drafts/issues/3274@github.com>
References: <quicwg/base-drafts/issues/3274@github.com>
Subject: Re: [quicwg/base-drafts] Encrypting Retry token (#3274)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5de684567fef9_e483fc7018cd964112572"; charset=UTF-8
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: dtikhonov
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/zFpHyS5z4LRzgRuGus5vEZRyCVo>
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, 03 Dec 2019 15:50:49 -0000

What about the cost to the recipient of the Retry packet?  Currently, it is as simple as [looking up the token in a hash](https://github.com/litespeedtech/lsquic/blob/7ee4152504cba5b0a4b79ed9eab2cf8134128975/src/liblsquic/lsquic_engine.c#L1211).  IIUC, encrypting the token would replace the hash lookup with a decryption operation?

-- 
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/issues/3274#issuecomment-561229121