From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4AF4228EC for ; Tue, 17 Jan 2023 16:47:48 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id D615C389CE; Tue, 17 Jan 2023 16:47:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1673974059; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QEZKFef1T5RttN7XH+hJ2FyadE3NPlAgKzu69vtBVRg=; b=bYd4TJTGUyWuVQYkhS9vGhUut3BFdla8kumIr440UG7bipIo8e/gW2TZJx/GHVTHILE+QU kXakM2ZS+1XCNzapqrSfAzFw/UckVDohK2/oJ2kgfsYfvEl84Tf4BZsdzzHZjxHyPR+e0o onqgPzk+MX9I4KoVCFVYNPT79KmGPDE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1673974059; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QEZKFef1T5RttN7XH+hJ2FyadE3NPlAgKzu69vtBVRg=; b=D6KXjQQvRfwR2ohvbWua4GLohV00/FWOXU4dtyT7Est+m3dTJ36apYlad5IMPVgHbi94Ge YGpodapP4U2qPGAA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id AC25013357; Tue, 17 Jan 2023 16:47:39 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id xnd7KCvRxmNbeAAAMHmgww (envelope-from ); Tue, 17 Jan 2023 16:47:39 +0000 Date: Tue, 17 Jan 2023 17:47:38 +0100 From: =?iso-8859-1?Q?J=F6rg_R=F6del?= To: James Bottomley Cc: Daniel =?iso-8859-1?Q?P=2E_Berrang=E9?= , linux-coco@lists.linux.dev, amd-sev-snp@lists.suse.com Subject: Re: SVSM initiated early attestation / guest secrets injection Message-ID: References: <45342f9ca1170817b2f741b35a5b0b2c85dc72c6.camel@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Mon, Jan 16, 2023 at 11:59:17AM -0500, James Bottomley wrote: > Not necessarily. We're prototyping it with an intermediate parent key > which can be injected after measurement using the keylime facility. Okay, that way we can defer TPM secret deployment to the time grub runs, at least in our case where /boot is encrypted. Regards, -- Jörg Rödel jroedel@suse.de SUSE Software Solutions Germany GmbH Frankenstraße 146 90461 Nürnberg Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman