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On Thu, Feb 13, 2020 at 10:05:21PM +0100, Frédéric Pierret wrote:
> 
> On 2020-02-13 20:37, Claudio Chinicz wrote:
> > Hi Frédéric,
> > 
> > Thanks, I've managed to install claws-mail on my Fedora template. The 
> > problem is that Claws-mail does not support Oath2 (Google) authentication, 
> > just like Kmail.
> 
> Your welcome.
> 
> > 
> > Evolution does support Oatrh2 authentication but instead of Gnupg it 
> > supports Open PGP, 

I think you're confusing two unrelated things. Oauth2 has nothing to do
with email encryption.

Also, just to clear terminology, GnuPG/GPG is an implementation of
OpenGPG standard, so _in theory_ it is the same.

- From what I see, Evolution does use GnuPG under the hood.

> > the same standard that TB 79 will support, replacing Enigmail.
> > 
> > Would Open PGP support/integrate with Qubes Split GPG?
> 
> I CC Marek to this question as I known there is some new version of it but I 
> don't know what's inside.

Thanks for bringing this to our attention. For reference, this is about 
https://wiki.mozilla.org/Thunderbird:OpenPGP:2020

- From my reading of this page, it sounds like a DISASTER in terms of
existing pgp encrypted emails support in Thunderbird, but also in terms
of extensibility of Thunderbird (severe limitation of addons, if not
removing them completely). One of the key features of Thunderbird is its
flexibility thanks to addons...

So, it looks like they have decided to use a completely different
implementation (or even writing own) of OpenPGP standard, instead of
using well-established standard of GnuPG. They already acknowledge it
will most likely lead to many interoperability issues and they accept it
at the design level. Life shows that if you already know it will be bad
at the design level, in practice it will be even worse!

But also important aspect is the key storage. Anyone serious about
security knows that keys should be stored isolated. Those not lucky
enough to use Qubes, can use smart cards for that. And according to FAQ
on that page, new Thunderbird won't support smart cards! 
And in the shape presented on that page, it looks like there won't be a way
to plug split gpg either!

As a side note, I do think that even though GnuPG is a well established
standard, its quality isn't very high and steps to break its monopoly in
OpenPGP implementations are a good thing. But it should be done in an
incremental, compatible way, not "break everything" approach.

Another side note, or rather a hint for Thunderbird developers: modern gpg
consists in reality of multiple parts running as separate processes. One
of them is gpg-agent responsible for accessing private keys (either
local or on a smart card) and nothing else. gpg-agent has also a simple,
(kind of) documented protocol. If they still want to break
everything, they could at least consider support for using existing
gpg-agent available in the system. This won't solve interoperability
issues, but at least will allow people to keep their keys secured on
smart cards or with (upcoming new version of) split gpg.

The only good side of this I see is having PGP support in Thunderbird
out of the box without requiring an addon - meaning probably more people
will use it.

BTW we need to verify is this major breakage of Thunderbird addons won't
break other Qubes features too - namely opening attachments in
DisposableVM, which is also done using an addon.

- -- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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