GnuPG is an Open Source project for the implementation of the OpenPGP (Pretty Good Privacy) protocols of encryption. GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key directories. GnuPG, also known as GPG, is a command line tool with features for easy integration with other applications. Front-end applications and libraries are also available. Version 2 of GnuPG also provides support for S/MIME.

GnuPG is a free software, so it can be freely used, modified and distributed under the terms of the GNU General Public License.

We recommend Gpg4Win for encrypting of your files and emails. Gpg4Win supports both relevant cryptography standards, OpenPGP and S/MIME (X.509), and is the official GnuPG distribution for Windows. Gpg4Win contains  Kleopatra as one of its Free Software components. For more information, see Gpg4Win documentation available both in PDF and HTML versions.

Kleopatra, a certificate manager for OpenPGP and X.509 (S/MIME) and common crypto dialogs

With Kleopatra, it is easy to manage your certificates and create your own ones. It seamlessly integrates with GnuPG. You can manage the key that you receive from your trading partners, because there is a screen to view the details of a key.

Certificate details with Kleopatra