Debian (apt-get) Public keys
Posted by Jamsi in Linux on May 1st, 2008 | no responses
“The following signatures couldn’t be verified because the public key is not available”
Try
apt-key add /usr/share/keyrings/debian-archive-keyring.gpg
Then
apt-get update
apt-get install package-name
If that doesn’t work, check that you have the debian-archive-keyring package.
apt-get install debian-archive-keyring