Received: by 2002:ab2:7b86:0:b0:1f7:5705:b850 with SMTP id q6csp427973lqh; Sat, 4 May 2024 06:55:42 -0700 (PDT) X-Forwarded-Encrypted: i=3; AJvYcCXe9YnjY7u6GafxdZNImo5vXAbZwNW7YZA1hWBldrkkwyx2F9g+P8eQPtti7WTJx45K9csUM1FPVjY1Zl2zz+e3pvmrss/Le/g6nfFNmw== X-Google-Smtp-Source: AGHT+IFCSKCA4keqqcrKLJk8Ix+YHQNcv7Q0B//g5XVdi1HpaHuoC9DLZWZ7sirrjk0o/Ot503GW X-Received: by 2002:a05:6358:4423:b0:18e:b042:3257 with SMTP id z35-20020a056358442300b0018eb0423257mr6848197rwc.16.1714830941901; Sat, 04 May 2024 06:55:41 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1714830941; cv=pass; d=google.com; s=arc-20160816; b=PfOvy5QTV94xDTwDxTw9MA4Y4YktWoF3bPNrsj8SQeCSyC6gbAR9ulp/B+cgNVWJh+ CvL9bifjyPvG4kd4XbuVhG1T81QA19QsjYyawSMAfNu73lmu6y7cBF17bZms7Fifgm94 glqek+pf9btQto8RXJuuXCUpzEQjb/jYRTTpbk1vM6Ryw3j8G/cN8Pjac0delH5KsHMv BYASMpzuhDH/SImPspF2DlORX8o6OtUVNEa4XGTCkTwVTyTbrd+0CWplafIsziBuQPF7 DYpo9bcmGW+JG2VxNKN5z1M6Gjzk3n3+lOw1CWK7zZpZs5p/EcHk8kPqNlRvq97Rxexv 3xTg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=user-agent:in-reply-to:content-disposition:mime-version :list-unsubscribe:list-subscribe:list-id:precedence:references :message-id:subject:cc:to:from:date:feedback-id:dkim-signature :dkim-signature; bh=Dr6moDwcHaVY/M5vimL+8X/TwtPDRUKWxK9/5v3fnZc=; fh=18b9CJ6+Ahx0rqv8hBtjbLP3Gri4QRCJZsV9ok61/XE=; b=jjAhJlHZoWcqUVdDiRDKt2JVfEWmJWoIbypnqfqRO9iAXACDqoeLL+1DmWA2Uy5MmG p42wgy+9r7c/fcL/uBbHxMOE8ARie/7DtcUMSPicVmNOrXC1wudNrnJqnNqlkIc6NosC VqolyAxPiNbN6xGAWPD66/3EX0yD1g2E5AJwh3JuI+SYDY6p8TIMcGYIcUlJKgWpgwUd 16W1ZqYctVVexFsJplJZxehqDlph7pXcGM+MJUbNarjqLI1SaIYFs0QZ1JMcmy5uQRPz WRI5aQDctLJkOm40J7cQciDYkkaKcvTEMfYzhjK6HbA6Tb6R83bypRrbGlIieZmiwPYc DNxw==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@benboeckel.net header.s=fm2 header.b=BKIGsNYc; dkim=pass header.i=@messagingengine.com header.s=fm3 header.b=Kwh0vdut; arc=pass (i=1 spf=pass spfdomain=benboeckel.net dkim=pass dkdomain=benboeckel.net dkim=pass dkdomain=messagingengine.com); spf=pass (google.com: domain of linux-kernel+bounces-168696-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-168696-linux.lists.archive=gmail.com@vger.kernel.org" Return-Path: Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. [2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id z1-20020a633301000000b0061a6ead7033si4656778pgz.281.2024.05.04.06.55.41 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 May 2024 06:55:41 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-168696-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; dkim=pass header.i=@benboeckel.net header.s=fm2 header.b=BKIGsNYc; dkim=pass header.i=@messagingengine.com header.s=fm3 header.b=Kwh0vdut; arc=pass (i=1 spf=pass spfdomain=benboeckel.net dkim=pass dkdomain=benboeckel.net dkim=pass dkdomain=messagingengine.com); spf=pass (google.com: domain of linux-kernel+bounces-168696-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-168696-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 19786282A87 for ; Sat, 4 May 2024 13:55:41 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7B80F39FF3; Sat, 4 May 2024 13:55:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=benboeckel.net header.i=@benboeckel.net header.b="BKIGsNYc"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="Kwh0vdut" Received: from fout7-smtp.messagingengine.com (fout7-smtp.messagingengine.com [103.168.172.150]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BDBC124B2A; Sat, 4 May 2024 13:55:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=103.168.172.150 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714830935; cv=none; b=ZbRdb4ElxFljcUZMHSy4a8w07efSCzlwgF1FrhTQwdS/5jQ/sGlUaGsBPTpbzxOz1O0Gs/qKk53+RCgCIBJU3NQuHSbqy1qKIjEJky0NX5Rq2kasbReirUq5ULQRZXAIj8w9QLlIp1H5Hfg0cRZGcgSKg/qTAUS70j+/3tj/+dY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714830935; c=relaxed/simple; bh=Dr6moDwcHaVY/M5vimL+8X/TwtPDRUKWxK9/5v3fnZc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Q/YFH73uWBz/vE8sBuflowOstkg+lyS/VS3+6fEcqD/08L0OeMIC4r72VmGqJfdTrwFTGWKVxxBcdavfXsWJXGA2iO9XSo77yxo+21baerJ5yi2f8yFvJK5HoiuThX33hsN74yfJBdLHW7PZno78RKE96ZSEio9DVhEEQpRxrOI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=benboeckel.net; spf=pass smtp.mailfrom=benboeckel.net; dkim=pass (2048-bit key) header.d=benboeckel.net header.i=@benboeckel.net header.b=BKIGsNYc; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=Kwh0vdut; arc=none smtp.client-ip=103.168.172.150 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=benboeckel.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=benboeckel.net Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailfout.nyi.internal (Postfix) with ESMTP id ADAA01380386; Sat, 4 May 2024 09:55:31 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute2.internal (MEProxy); Sat, 04 May 2024 09:55:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=benboeckel.net; h=cc:cc:content-type:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=fm2; t=1714830931; x= 1714917331; bh=Dr6moDwcHaVY/M5vimL+8X/TwtPDRUKWxK9/5v3fnZc=; b=B KIGsNYc5LsBPFCfjVZNHjuAvW1kYLsmljo4tpB+cckYIalyhPsyI/Vozr2aYYyxt 4+jeJiOegKOEWsv95VXuJ+ehHySzs9+p4t4mvS2P/H4huCc5EqIDy5ne+fq+xTZ8 6CGddwJtRMWD50TssP16tI8FMTpwx1GW+dBe5OtnFbKLk4sKAQwdu/eJ39NVecNb S8o0OXs00weiv3AEy+Dw/1TYAb1ObvcdZD+GQFXDj/agzYgO59Cfof2CUYxDWgMo g+4PFjUWRLQL8MD+8CbIWp/s9pPXTSWHMXorxITj2tJu/o6i/wqU4jnYZ18k0x3D Kz6XA+wRNIM9DOVszhyqw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:subject:subject:to :to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; t=1714830931; x=1714917331; bh=Dr6moDwcHaVY/M5vimL+8X/TwtPD RUKWxK9/5v3fnZc=; b=Kwh0vduthkpU+Vl1YwNqRuiJi+Volo7we9c5i9iN+kID 1B8KM8qDZsMATWvM+8iyzaZ9efu5blHoCIrclzBy/aXGLNZLSNutATaog++iFVDb u/OPSEyrgZV6/pzGINrUy1nkrsIXSP2XxGFatLW3LSmZYK1DrMJ5nW7s1yx59t3X kh5vCDynAc/aynCDYFhSoLdvxWWnrYAeoH7leVn3wLCKne5GeLnbv/dgEEbJK5mZ hGZ+c4lrLpmkXS0+yxgOsqPeXvfvO48Ursi7CJjtriZR++s+Gg7jitH38m+cIzNy ZbkpdjehdidqJ7IjzVX2SvNUHpiiU8b+7Bfq2C5KKw== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvledrvddvvddgjedvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvfevuffkfhggtggujggfsehttdertddtreejnecuhfhrohhmpeeuvghn uceuohgvtghkvghluceomhgvsegsvghnsghovggtkhgvlhdrnhgvtheqnecuggftrfgrth htvghrnhepffelgeffveelkeffkeehiefgtdeluedvtdfghfdtvdefgfejheffudeuveek vddvnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepmh gvsegsvghnsghovggtkhgvlhdrnhgvth X-ME-Proxy: Feedback-ID: iffc1478b:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 4 May 2024 09:55:30 -0400 (EDT) Date: Sat, 4 May 2024 09:55:29 -0400 From: Ben Boeckel To: Jarkko Sakkinen Cc: Ignat Korchagin , James Bottomley , Mimi Zohar , David Howells , Paul Moore , James Morris , serge@hallyn.com, linux-integrity@vger.kernel.org, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@cloudflare.com Subject: Re: [RFC PATCH 0/2] TPM derived keys Message-ID: References: <20240503221634.44274-1-ignat@cloudflare.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.2.12 (2023-09-09) On Sat, May 04, 2024 at 03:21:11 +0300, Jarkko Sakkinen wrote: > I have no idea for what the key created with this is even used, which > makes this impossible to review. Additionally, there is nothing in Documentation/ for how userspace might use or create them. This includes things like their description format and describing available options. --Ben