No deb.torproject.org-keyring in Ubuntu Precise
The deb.torproject.org-keyring package is not in the list of packages for Ubuntu Precise, so you get a package-not-found error when you try to install it.
The deb.torproject.org-keyring package is not in the list of packages for Ubuntu Precise, so you get a package-not-found error when you try to install it.