From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YWM0c-00040U-5r for barebox@lists.infradead.org; Fri, 13 Mar 2015 09:35:59 +0000 Message-ID: <1426239335.13791.92.camel@pengutronix.de> From: Jan =?ISO-8859-1?Q?L=FCbbe?= Date: Fri, 13 Mar 2015 10:35:35 +0100 In-Reply-To: <20150312174740.GT30554@ns203013.ovh.net> References: <1426171199-2729-1-git-send-email-jlu@pengutronix.de> <1426171199-2729-3-git-send-email-jlu@pengutronix.de> <20150312174740.GT30554@ns203013.ovh.net> Mime-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [RFC 2/4] Add rsa support To: Jean-Christophe PLAGNIOL-VILLARD Cc: barebox@lists.infradead.org On Do, 2015-03-12 at 18:47 +0100, Jean-Christophe PLAGNIOL-VILLARD wrote: > as state in my previous e-mail I will a keystore support > > but this dt format to handle no please > > we need to use the standard format as in the kernel or openssl > > DER and x509 > > specially x509 as if we want to be able to add key at runtime we need > to sign them we the trusted RO keys > > For the implementation of RSA I use the polarssl one and plan to add > the kernel one > > and this implementation is limited to 4096 the polarssl one is not Having an ASN1 parser for DER/x509 is a huge amount of complexity I would not want in a bootloader. Just take a look at the problems the SSL-CAs and browsers had with different interpretations of the same cert. The FIT format (and corresponding public key in the bootloader's DT) has been adopted by depthcharge and u-boot, because it handles the requirements and nothing more. What is your use-case for which you need to add keys at runtime? Regards, Jan -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox