From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id AEEA589D for ; Wed, 12 Aug 2015 22:40:04 +0000 (UTC) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 16A011CE for ; Wed, 12 Aug 2015 22:40:04 +0000 (UTC) From: David Howells In-Reply-To: References: <20436.1438090619@warthog.procyon.org.uk> <1438096213.5441.147.camel@HansenPartnership.com> <1438097471.5441.152.camel@HansenPartnership.com> <1438099839.5441.165.camel@HansenPartnership.com> <1438100102.26913.183.camel@infradead.org> <30361.1438101879@warthog.procyon.org.uk> <1438111168.26913.189.camel@infradead.org> <1438121016.5441.233.camel@HansenPartnership.com> <16035.1439324695@warthog.procyon.org.uk> <11239.1439403720@warthog.procyon.org.uk> To: Andy Lutomirski MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <13212.1439419198.1@warthog.procyon.org.uk> Date: Wed, 12 Aug 2015 23:39:58 +0100 Message-ID: <13213.1439419198@warthog.procyon.org.uk> Cc: James Bottomley , Luis Rodriguez , "ksummit-discuss@lists.linuxfoundation.org" , Kyle McMartin Subject: Re: [Ksummit-discuss] [TECH TOPIC] Firmware signing List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Andy Lutomirski wrote: > 1.5K? I'm talking about an actual raw public key, which is 65 bytes > or less in reasonable implementations. (64 or 65 bytes for P-256 > depending on encoding and 32 bytes for compressed schemes like EdDSA.) Various bodies that define security criteria with which one must comply to be able to supply software mandate key lengths of at least 2048 bits - that is min 256 bytes. But yes, we could even take a raw public key and just fill in a public_key structure for it and then use it. David