gpgv-udeb software package provides minimal signature verification tool, you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gpgv-udeb
gpgv-udeb is installed in your system.
Make ensure the gpgv-udeb package were installed using the commands given below,
$ sudo dpkg-query -l | grep gpgv-udeb *
You will get with gpgv-udeb package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | debian-installer udeb packages |
| Package | gpgv-udeb |
| Version | 2.1.15-1ubuntu6 |
| Description | minimal signature verification tool |
| Sub Section | Debian-installer |