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=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 B8B74C43467 for ; Sat, 17 Oct 2020 13:51:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81D542072D for ; Sat, 17 Oct 2020 13:51:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602942665; bh=xHyrZDkpw4xtH8tXTI9/HLzwefOR49SnPpbecwDhS1U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=zbq+Z/Sa/GeC6T5OVT/bxFyWXzLD0NXKJeS7eajIHrImrKRYfcPrXhI2vLvMDNAqy QWSaRLfotmwI7lUc7a81XAKyoR9FcgQM2jGZEmg6W2/96J78w6T5mDu96zzk4Eq01e trD7z8H/54pYaH1gWTx1LWpKr95zQJkh+J12fNuY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438208AbgJQNvE (ORCPT ); Sat, 17 Oct 2020 09:51:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2438199AbgJQNvD (ORCPT ); Sat, 17 Oct 2020 09:51:03 -0400 Received: from mail-qk1-x729.google.com (mail-qk1-x729.google.com [IPv6:2607:f8b0:4864:20::729]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C2ACC0613CE for ; Sat, 17 Oct 2020 06:51:02 -0700 (PDT) Received: by mail-qk1-x729.google.com with SMTP id x20so4260523qkn.1 for ; Sat, 17 Oct 2020 06:51:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; h=date:from:to:cc:subject:message-id:mail-followup-to:references :mime-version:content-disposition:in-reply-to; bh=4MgdNESWv5eDl+CUOXr6F2inTCBbN7co4Pv3gwx16Wc=; b=EiXO03NhEk2wbgmN0avyaTVn215mJlgFIRwAZkNm4U8ohgwsX9ZY+vAuSi4wAEkgDf Sw9MTqnCownGn9LsP+J8b5Xx5BFRtMXmNvFxexLlVfmNZedq4QF9KyojkQmFxJucDlZz MXxaua1SrN6eBr+RouqCqyTySXgVnZ3uaDe9w= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id :mail-followup-to:references:mime-version:content-disposition :in-reply-to; bh=4MgdNESWv5eDl+CUOXr6F2inTCBbN7co4Pv3gwx16Wc=; b=PuGuWW/i3XcvEzZ6aqOjlbn47UiPHs6ovr+VEiTlMoRRd9ybzW3VQSsjLQm16YfC2q xWIPEby5zamx3Ku2pRUzvXF3Q36I6xMdwOQmwfdOm1CyiK0eQynfhRDkYL47RTfiEQiU /pICqdWSBU8GmMNcyQtjOhZeXdkHbw9wLdOXstH2uTeyIFWMaqBq4xKEPT/pBu4PpisG KlvlhMOe2EYvM8ES938GrcUWtghLvIf+lBk33EwfS8HtRdiv7DXEiaOwQkeWogY7EetV uUZ4hTEJKYc4xOW+IlajgoJ9eHnedVUyWJCUnnnt1Nyvq1hMrVl3y5i4D4pxPUOiYMoU DqOw== X-Gm-Message-State: AOAM533bI+onF0LmXtFWke/NvLBbzvY01N+rpw9iv9nNaXjAPVcN4p4/ fepHf9pSaqlqAOSMqC6H6yJlEOqD8FkJdgEX X-Google-Smtp-Source: ABdhPJwPgt9GwEUG+ybkb4xxn9y8igRaI2t/gURb9hFpkSJ8NgJbpMtJD+JGsolQE0HM633TfuLc3g== X-Received: by 2002:a37:9b42:: with SMTP id d63mr8411455qke.49.1602942661073; Sat, 17 Oct 2020 06:51:01 -0700 (PDT) Received: from chatter.i7.local ([89.36.78.230]) by smtp.gmail.com with ESMTPSA id w6sm2115321qkb.6.2020.10.17.06.50.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Oct 2020 06:51:00 -0700 (PDT) Date: Sat, 17 Oct 2020 09:50:58 -0400 From: Konstantin Ryabitsev To: Jarkko Sakkinen Cc: "Alexander A. Klimov" , Miguel Ojeda , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Backing up the PGP master key Message-ID: <20201017135058.mxlbuxqekpvy3hqx@chatter.i7.local> Mail-Followup-To: Jarkko Sakkinen , "Alexander A. Klimov" , Miguel Ojeda , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org References: <20201014213406.GA7622@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20201014213406.GA7622@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 15, 2020 at 12:34:06AM +0300, Jarkko Sakkinen wrote: > Konstantin, writing to you based on 'git blame' :-) > > The maintainer guide recommends using paperkey for the PGP master key, > which is a prefectly sane method. > > I was just wondering that isn't a backup to a USB stick a reasonable > option? E.g. get a few USB sticks (new, unweared), store your master key > to each of them and put to safe. Sure, it's an option as well. I believe the guide recommends three different backups: 1. thumb drive within reach for regular access 2. another drive in case the first one goes bad 3. paperkey backup in the vault There's no reason why #2 above can't go into the vault as well, if you're inclined. I wouldn't skip paperkey, since I'm generally wary of putting anything long-term onto electronic media due to things like charge decay, cosmic rays, or other weird phenomena resulting in flipped bits. -K