Debian: How to fix the "public signatures" problem in apt-get

After some months ingnoring this problem "The following signatures couldn't be verified because the public key is not available" when you make # apt-get update

I tried to fix it. Fast and easy solution

copy the key that appear together with the previous message. (HERE ARE TWO DIFFERENTS: D63913EF50D0AE60 and other)

Do:

# gpg --keyserver wwwkeys.eu.pgp.net --recv-keys 63913EF50D0AE60

gpg: directory `/root/.gnupg' created

gpg: new configuration file `/root/.gnupg/gpg.conf' created

gpg: WARNING: options in `/root/.gnupg/gpg.conf' are not yet active during this run

gpg: keyring `/root/.gnupg/secring.gpg' created

gpg: keyring `/root/.gnupg/pubring.gpg' created

gpg: requesting key 50D0AE60 from hkp server wwwkeys.eu.pgp.net

gpg: key 50D0AE60: duplicated user ID detected - merged

gpg: /root/.gnupg/trustdb.gpg: trustdb created

gpg: key 50D0AE60: public key "Werner Mahr (Der Vollstrecker) <werner@vollstreckernet.de>" imported

gpg: Total number processed: 1

gpg: imported: 1

# apt-key add /root/.gnupg/pubring.gpg

OK

The same with other key

# gpg --keyserver wwwkeys.eu.pgp.net --recv-keys FB1A399A71409CDF

gpg: requesting key 71409CDF from hkp server wwwkeys.eu.pgp.net

gpg: key 71409CDF: public key "Stefan Lippers-Hollmann (http://www.kanotix.com) <s.l-h@gmx.de>" imported

gpg: Total number processed: 1

gpg: imported: 1

# apt-key add /root/.gnupg/pubring.gpg

OK

------------------------------------

Problem fixed !!! Geen probleem!!!

You can see the new keys with

# apt-key list