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Re: wanted: educate us please on key dongles

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On Fri, 11 Aug 2017, Jonathan McDowell wrote:
> On Fri, Aug 11, 2017 at 10:08:16AM -0700, Sean Whitton wrote:
> > On Fri, Aug 11 2017, Jonathan McDowell wrote:
> > >  * If you don't want to buy hardware, use an offline master
> > >  key. Create
> > >    a certification only master key using something like PGP Clean Room
> > >    on a non-networked host [...]
> > 
> > By default, GnuPG creates a signing+certification master key.  Could you
> > explain why it's a good idea to override that?  I'm not sure what it
> > achieves.
> 
> I see no reason why the master key should ever be used for signatures in
> such a scenario, so it seems sensible to indicate that it is purely for
> certification.

Well, it can be useful.  A SC master key (Sign and Certify) can be used
to sign messages explaining to someone else the need for a new subkey
when you had to revoke every subkey, when just adding the subkey itself
is not enough, or when adding subkeys is subject to a delay.

Suppose you forget to renew/upload a new subkey in your Debian key set,
and the current subkeys expire: it takes time for a new subkey upload to
clear keyring maint.  During that time, an SC master key can be used in
an emergency to sign a vote or an upload.

-- 
  Henrique Holschuh

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wanted: educate us please on key dongles Adam Borowski <kilobyte@angband.pl> - 2017-08-02 22:20 +0200
  Re: wanted: educate us please on key dongles Zlatan Todoric <zlatan@riseup.net> - 2017-08-02 22:40 +0200
  Re: wanted: educate us please on key dongles Jonas Smedegaard <dr@jones.dk> - 2017-08-02 22:50 +0200
  Re: wanted: educate us please on key dongles Wouter Verhelst <w@uter.be> - 2017-08-03 11:30 +0200
  Re: wanted: educate us please on key dongles Wouter Verhelst <wouter@debian.org> - 2017-08-03 11:30 +0200
  Re: wanted: educate us please on key dongles Daniel Pocock <daniel@pocock.pro> - 2017-08-03 13:40 +0200
  Re: wanted: educate us please on key dongles Víctor Cuadrado Juan <me@viccuad.me> - 2017-08-03 19:10 +0200
  Re: wanted: educate us please on key dongles Jonathan McDowell <noodles@earth.li> - 2017-08-11 15:20 +0200
    Re: wanted: educate us please on key dongles Christian Seiler <christian@iwakd.de> - 2017-08-11 17:30 +0200
      Re: wanted: educate us please on key dongles Sean Whitton <spwhitton@spwhitton.name> - 2017-08-11 19:30 +0200
        Re: wanted: educate us please on key dongles Christian Seiler <christian@iwakd.de> - 2017-08-11 19:50 +0200
    Re: wanted: educate us please on key dongles Sean Whitton <spwhitton@spwhitton.name> - 2017-08-11 19:10 +0200
      Re: wanted: educate us please on key dongles Jonathan McDowell <noodles@earth.li> - 2017-08-11 19:30 +0200
        Re: wanted: educate us please on key dongles Henrique de Moraes Holschuh <hmh@debian.org> - 2017-08-11 22:00 +0200
          Re: wanted: educate us please on key dongles Jonathan McDowell <noodles@earth.li> - 2017-08-12 00:00 +0200
    Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-29 19:40 +0200
      Re: wanted: educate us please on key dongles Christian Seiler <christian@iwakd.de> - 2017-08-29 20:00 +0200
      Re: wanted: educate us please on key dongles Jonathan McDowell <noodles@earth.li> - 2017-08-30 11:10 +0200
        Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-30 12:20 +0200
          Re: wanted: educate us please on key dongles Adam Borowski <kilobyte@angband.pl> - 2017-08-30 12:50 +0200
            Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-30 13:00 +0200
              Re: wanted: educate us please on key dongles Ian Jackson <ijackson@chiark.greenend.org.uk> - 2017-08-30 13:20 +0200
                Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-30 15:00 +0200
              Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-30 13:20 +0200
              Re: wanted: educate us please on key dongles Jonathan McDowell <noodles@earth.li> - 2017-08-30 13:20 +0200
              Re: wanted: educate us please on key dongles Ian Campbell <ijc@debian.org> - 2017-08-30 17:20 +0200
        Re: wanted: educate us please on key dongles Alexander Zangerl <az+debmnt@snafu.priv.at> - 2017-08-31 00:40 +0200
    Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-29 20:10 +0200
      Re: wanted: educate us please on key dongles Henrique de Moraes Holschuh <hmh@debian.org> - 2017-08-29 21:10 +0200
        Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-30 09:10 +0200
          Re: wanted: educate us please on key dongles Christian Seiler <christian@iwakd.de> - 2017-08-30 14:00 +0200
            Re: wanted: educate us please on key dongles Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-30 14:50 +0200
              Re: wanted: educate us please on key dongles Christian Seiler <christian@iwakd.de> - 2017-08-30 17:20 +0200
            Re: wanted: educate us please on key dongles Christian Seiler <christian@iwakd.de> - 2017-09-22 22:10 +0200
          Re: wanted: educate us please on key dongles Teemu Likonen <tlikonen@iki.fi> - 2017-08-30 14:10 +0200
          Re: wanted: educate us please on key dongles Sean Whitton <spwhitton@spwhitton.name> - 2017-08-31 07:10 +0200
  Re: wanted: ... key dongles GNUK is available Osamu Aoki <osamu@debian.org> - 2017-08-16 17:00 +0200
    Re: wanted: ... key dongles GNUK is available Marc Haber <mh+debian-project@zugschlus.de> - 2017-08-29 19:50 +0200
  [summary] Re: wanted: educate us please on key dongles Charles Plessy <plessy@debian.org> - 2017-09-08 15:20 +0200
    Re: [summary] Re: wanted: educate us please on key dongles Sotirios Vrachas <sotirios@vrachas.com> - 2017-09-09 22:20 +0200
      Re: [summary] Re: wanted: educate us please on key dongles Charles Plessy <plessy@debian.org> - 2017-09-10 06:00 +0200

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