From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754767AbXD1LGm (ORCPT ); Sat, 28 Apr 2007 07:06:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754114AbXD1LGl (ORCPT ); Sat, 28 Apr 2007 07:06:41 -0400 Received: from mta-2.ms.rz.RWTH-Aachen.DE ([134.130.7.73]:45589 "EHLO mta-2.ms.rz.rwth-aachen.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754055AbXD1LGk (ORCPT ); Sat, 28 Apr 2007 07:06:40 -0400 Date: Sat, 28 Apr 2007 13:06:52 +0200 From: markus reichelt Subject: entropy of /dev/random vs. openssl rand To: linux-crypto@nl.linux.org Cc: linux-kernel@vger.kernel.org Mail-followup-to: linux-crypto@nl.linux.org, linux-kernel@vger.kernel.org Message-id: <20070428110652.GI13982@tatooine.rebelbase.local> Organization: still stuck in reorganization mode MIME-version: 1.0 Content-type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="G6nVm6DDWH/FONJq" Content-disposition: inline X-PGP-Key: 0xC2A3FEE4 X-PGP-Fingerprint: FFB8 E22F D2BC 0488 3D56 F672 2CCC 933B C2A3 FEE4 X-Request-PGP: http://mareichelt.de/keys/c2a3fee4.asc User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --G6nVm6DDWH/FONJq Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, I need to create a moderate amount of v3 keys for loop-aes and wonder how/if the "openssl rand" implementation differs significantly from /dev/random concerning entropy. In case /dev/random and "openssl rand" are somewhat comparable, I would just use the latter to create the keys. However, I certainly don't want to use a /dev/urandom look-alike. Any feedback appreciated. --=20 left blank, right bald --G6nVm6DDWH/FONJq Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQFGMyrMLMyTO8Kj/uQRAo2lAJ0UQndyKu7yIvKPESzkPBRVtpboQQCfYHqf 7P8qcer8lnWoEACPJGBN6+I= =7ASw -----END PGP SIGNATURE----- --G6nVm6DDWH/FONJq--