From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: reuben.m.work@gmail.com Received: from krantz.zx2c4.com (localhost [127.0.0.1]) by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 974577fd for ; Sat, 12 May 2018 23:02:37 +0000 (UTC) Received: from mail-io0-x232.google.com (mail-io0-x232.google.com [IPv6:2607:f8b0:4001:c06::232]) by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 0a209bab for ; Sat, 12 May 2018 23:02:37 +0000 (UTC) Received: by mail-io0-x232.google.com with SMTP id t23-v6so11084386ioc.10 for ; Sat, 12 May 2018 16:05:39 -0700 (PDT) Return-Path: Received: from subterfuge.localnet ([2605:a601:93b:400:6e62:6dff:fe57:a551]) by smtp.gmail.com with ESMTPSA id w12-v6sm3044006iog.53.2018.05.12.16.05.38 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 12 May 2018 16:05:38 -0700 (PDT) From: Reuben Martin To: WireGuard mailing list Subject: Re: Need for HW-clock independent timestamps Date: Sat, 12 May 2018 18:05:37 -0500 Message-ID: <2012819.dV4fgoeI0M@subterfuge> In-Reply-To: <793381ba-b59d-50e4-6d7b-cbe9bef91ba1@cgws.de> References: <793381ba-b59d-50e4-6d7b-cbe9bef91ba1@cgws.de> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Saturday, May 12, 2018 2:29:24 PM CDT Axel Neumann wrote: > Thanks a lot for your replies. But as you can see from my comments below > this all does not look like a valid option for many embedded use cases. Perhaps it might make sense to add functionality for WG to request a timest= amp=20 from peers and to reply to TS requests so long as they are signed with a va= lid=20 key. Implementing the WG side of a TS exchange would probably be fairly trivial,= =20 but I don=E2=80=99t know what is involved to take the received timestamp an= d use that=20 to set the system clock. That part might present a whole can of worms that= =20 Jason may not want to deal with. =2DReuben