This is the official Wiki for GnuPG, the GNU Privacy Guard, and all related Free Software initiatives like Gpg4win. Their aim is to produce software solutions to

• enable end-to-end security, offering protection against being listened to by servers or transport systems.
• use openly researched crypto algorithms.
• allow the implementations to be independently audited.

The next big user experience boost for email and file-transport security would be the adoption of the STEED concept.

Help us to improve this wiki!

For Users

• documentation
• LargeKeys: How many bits are enough?
• WebOfTrust: Understanding the web of trust
• GnomeKeyring: What to do when Gnome Keyring Hijacks your GPG Agent
• TroubleShooting: What to do when something doesn't work.
• PlatformNotes - what to be aware of when using or administrating GnuPG on different platforms.
• X.509 hints (needed for S/MIME and trusted root certs)
• SmartCard hints
• Wishlist Where to submit feature requests
• Applications using GnuPG
• MailClients/Screenshots
• LDAPKeyserver: How to configure OpenLDAP as a keyserver.
• Hints for use with NFS

For Developers

• How to use GnuPG from your application.
• BuildingFromGIT
• Building GnuPG 2.1: GnuPG 2.1 is the latest GnuPG version but as with all 2.x versions it has several dependencies, which make building it a bit more difficult. Here are some notes.
  • Building for Unix
  • Building for Windows
  • Building for Android
• API checker: Upstream-Tracker.org checks ABI/API changes for some libraries like gpgme, libgpg-error, libgcrypt.

Note that the tools can't necessary decide whether something is an ABI or API change. The output should be used as a hint to look for whether there might be a problem. We are not aware of any broken API or ABI contracts for the listed libraries.

• SignatureHandling

Gpg4win

• Roadmap
• Wishlist
• Future Development means for ImprovingSecurity
• Contracts
  • Informsec2013 funded Gpg4win improvements from April 2013 - September 2013 (from 2.1.1-beta1 to 2.2.1).
  • Gpg4all2015 from October 2015 -
  • Gpg4vsnfd2015 started in October 2015 to prepare an evaluation for use with classified 'restricted' documents in Germany.
• Gpg4win in the press
• Building the installer

Other OpenPGP implementations/initiatives

• OtherFreeSoftwareOpenPGP
• OtherFreeSoftwareInitiatives

Planning

• Tasks
• GnuPGSummit