The following signatures were invalid: EXPKEYSIG 18DF3741CDFFDE29

[Ralf Mardorf]

On Mon, 10 Jan 2022 08:44:06 +0100, robert rottermann wrote:
>Googling for a solution made me execute the following steps:
>
>
>apt update
>apt-get clean
>mv /var/lib/apt/lists tmp
>apt-get clean
>apt-get update

Hi,

what search terms were you using?

If I google for "http://deb.anydesk.com" I get the following as the
second hit:

"AnyDesk DEB repository how-to

Run the following commands as root user:

- add repository key to Trusted software providers list

wget -qO - https://keys.anydesk.com/repos/DEB-GPG-KEY | apt-key add -

- add the repository:

echo "deb http://deb.anydesk.com/ all main" > /etc/apt/sources.list.d/anydesk-stable.list

- update apt cache:

apt update

- install anydesk:

apt install anydesk

" - http://deb.anydesk.com/howto.html

Try to add the repository key as described above (again). If you get the
same error again, then you need to contact support of your third party
repository.

The key is seemingly ok, and _not_ "EXP"ired:

[rocketmouse at archlinux ~]$ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 18DF3741CDFFDE29
gpg: key 18DF3741CDFFDE29: public key "philandro Software GmbH <info at philandro.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1
[rocketmouse at archlinux ~]$ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 18DF3741CDFFDE29
gpg: key 18DF3741CDFFDE29: "philandro Software GmbH <info at philandro.com>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

The address https://keys.anydesk.com/repos/DEB-GPG-KEY provides:

[rocketmouse at archlinux Desktop]$ ls -l DEB-GPG-KEY 
.rw-r--r-- rocketmouse rocketmouse 1.7 KB Mon Jan 10 09:04:47 2022  DEB-GPG-KEY
[rocketmouse at archlinux Desktop]$ gpg --show-keys DEB-GPG-KEY 
pub   rsa2048 2017-12-19 [SC] [expires: 2023-12-17]
      D56311E5FF3B6F39D5A16ABE18DF3741CDFFDE29
uid                      philandro Software GmbH <info at philandro.com>
sub   rsa2048 2017-12-19 [E] [expires: 2023-12-17]

So indeed (D56311E5FF3B6F39D5A16ABE)18DF3741CDFFDE29 isn't expired.

I don't know why you get "W: GPG error: http://deb.anydesk.com all InRelease: The following signatures 
were invalid: EXPKEYSIG 18DF3741CDFFDE29 philandro Software GmbH <info at philandro.com>"?

Regards,
Ralf