$ sudo apt-get update
$ sudo apt-get install gnupg-udeb 

gnupg-udeb is installed in your system.

Make ensure the gnupg-udeb package were installed using the commands given below,

$ sudo dpkg-query -l | grep gnupg-udeb *

You will get with gnupg-udeb package name, version, architecture and description in a table

gnupg-udeb package basic information: