Short for GNU Privacy Guard and also abbreviated as GnuPG, GPG is the GNU project’s free software implementation of the OpenPGP standard as defined by RFC4880. GPG is specifically a command line tool that enables you to encrypt and sign your data and communication and includes a key management system as well as access modules for all kind of public keydirectories.
Learn more about Open Source in Webopedia’s “Did You Know…?” section.
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