Invalid signatures

[Matteo Ipri]

Hi all,
I can not install xpra on Ubuntu 17.10 Artful AArdvark because I get the following:

W: GPG error: http://winswitch.org artful Release: The following signatures were invalid: EXPKEYSIG 18ADB31CF18AD6BB Antoine Martin <[email protected]>
E: The repository 'http://winswitch.org artful Release' is not signed.

I followed instructions on:
​https://winswitch.org/downloads/debian-repository.html?dist_select=artfulbeta

and on:
https://winswitch.org/trac/ticket/304

Steps to reproduce:

apt-get install curl
curl https://winswitch.org/gpg.asc | apt-key add -

and

apt-get install dirmngr
apt-key adv --fetch-keys https://xpra.org/gpg.asc

both get me the above message; while

apt-key adv --keyserver keys.gnupg.net --recv-keys F18AD6BB

results in a connection timeout.

Please advice,
Thanks

[Matteo Ipri]

My bad! I have a strict firewall and I had to open port 11371 outbound to make the command

apt-key adv --keyserver keys.gnupg.net --recv-keys F18AD6BB

work.
Thanks anyway

[Antoine Martin]

More details in #304.