See also: Cryptography | Software | Encrypting Your Files | Encrypting Your Mail
Acronym: Gnu Privacy Guard
A complete and Free Software replacement for the commercial PGP encryption tool for a wide variety of operating systems. Although the program itself is textmode only, user-friendly front-ends are available (see below).
Unlike PGP, it can be used without any restrictions by individuals and commercial entities alike because it does not use the patented IDEA algorithm.
- PGP users can disable the use of the IDEA algorithm in their options to make it fully compatible.
- GPG users can install an IDEA plugin explained here.
GPG is an OpenPGP-compliant (RFC 2440]) application.
Programs using GPG
There are many front-end tools for the program:
Acronym: Windows Privacy Tools
Home Page: http://www.winpt.org
A Windows program that acts much like the commercial PGP freeware installation but with no licensing issues (GPL). Very feature-rich and useful and almost completely compatible with commercial PGP.
Home Page: http://enigmail.mozdev.org
A GPG front-end for e-mail that allows for a cross-platform user-interface with any computer that will run Mozilla Mail/News. A plug-in in constant development.
Acronym: Mac Gnu Privacy Guard
Home Page: http://macgpg.sourceforge.net (SourceForge)
MacOSX port of the GPG program. A Command-Line Interface.
Acronym: The Gnu Privacy Assistant
Home Page: http://www.gnupg.org/related_software/gpa/
A user-friendly, GUI Front-end to GPG for many UNIX-like operating systems.