gpgv-udeb software package provides minimal signature verification tool, you can install in your Debian 7 (Wheezy) 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 | Debian 7 wheezy |
| Section | debian-installer udeb packages |
| Package | gpgv-udeb |
| Version | 1.4.12-7+deb7u7 |
| Description | minimal signature verification tool |
| Sub Section | Debian-installer |