Fedora Public Key
Hello! I have the Vivaldi installed in Fedora 21 and when I upgrade the system, I get this output: The public key for the vivaldi-snapshot-188.8.131.52-1.x86_64.rpm is not installed. How can I solve this?
$ sudo yum update –nogpgcheck vivaldi-snapshot
that will only allow the installation of unsigned packages, not provide a method of "verifying" the source of the package.
To restate slidecrank's suggestion "disable security"
Better solution is for Vivaldi to sign the packages