From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3703C433E1 for ; Fri, 24 Jul 2020 21:29:04 +0000 (UTC) Received: from krantz.zx2c4.com (krantz.zx2c4.com [192.95.5.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EBBA5206F6 for ; Fri, 24 Jul 2020 21:29:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=petergarner.net header.i=@petergarner.net header.b="L+FwLBsR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EBBA5206F6 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=petergarner.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=wireguard-bounces@lists.zx2c4.com Received: by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 917c642d; Fri, 24 Jul 2020 21:05:53 +0000 (UTC) Received: from mail.petergarner.net (82-71-1-246.dsl.in-addr.zen.co.uk [82.71.1.246]) by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 877d9bdf for ; Fri, 24 Jul 2020 08:35:33 +0000 (UTC) Received: from [192.168.1.20] (mqtt.petergarner.net [82.71.1.246]) by mail.petergarner.net (Postfix) with ESMTPSA id 09DC360022C; Fri, 24 Jul 2020 09:58:26 +0100 (BST) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.petergarner.net 09DC360022C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=petergarner.net; s=mail; t=1595581106; bh=8lnt4Phv6XXiCOw/0StWUh5aMK1uM5gU698pMWPv8MI=; h=Subject:From:In-Reply-To:Cc:Date:References:To:From; b=L+FwLBsRgTJR+grxFEeMUjHhwtXS7fhwEpakPtnDyfj1Xv98fhqaMv607fe66qIhr lupKjw5y8yr34RoJyaf/X9WWxlOhAICkGaff+AsmW97BKoD9zw1QlB5ioeNxRMFKDd 0UbHtxCdMBW47yTqKKfGbFyWwcAHfzBb5jKQAa9W6j9JSmbxye2lOym+HfYXrtfnVe ccNiFPsO6ygusS6rSLgPXfRSLDr3j/x75VlXvQM8cbjnzNApijPbwAMQrMQeCFVFRU nZYlFqTPgCHETq3doYt3SFtIkt6La+jdarhDuqcXctoUux811AaF1BE9bHypLMuc5E kSnPe+xM7fvGg== Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (1.0) Subject: Re: Using OneRNG hardware RNG can I get wireguard to use /dev/random From: "Ipad@petergarner.net" In-Reply-To: Cc: peter garner , wireguard@lists.zx2c4.com Date: Fri, 24 Jul 2020 09:58:25 +0100 Message-Id: <7D62871B-4F42-4B15-AEDA-25352B041FFA@petergarner.net> References: To: noloader@gmail.com X-Mailer: iPad Mail (17G68) X-Mailman-Approved-At: Fri, 24 Jul 2020 23:05:52 +0200 X-BeenThere: wireguard@lists.zx2c4.com X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: wireguard-bounces@lists.zx2c4.com Sender: "WireGuard" >> On 24 Jul 2020, at 09:33, Jeffrey Walton wrote: >>=20 >> =EF=BB=BFOn Fri, Jul 24, 2020 at 4:28 AM peter garner wrote: >> I've used my OneRNG v3.0 external device to recreate my SSH moduli and >> am now looking to recreate my wireguard keys. >> According to the Wireguard docs it uses /dev/urandom: >> https://gist.github.com/rmoriz/58f1768218a4fbc4b318615bfb85111d >> fd =3D open("/dev/urandom", O_RDONLY); >> if (fd < 0) >> return fd; >> ret =3D read(fd, out, len); >> close(fd); >=20 > Unrelated, the kernel-crypto folks recommend using /dev/urandom. > Wiregaurd is following best practices. Also see > https://lkml.org/lkml/2017/7/20/993. >=20 > Jeff Thanks Jeff - all is now clear (that link helped as well). I've been doing s= ome additional research and everything makes sense.