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The PGP and GnuPG message encryption and signature programs, the OpenPGP message format, and software to manipulate messages and keys.

PGP (Pretty Good Privacy) and GnuPG (GPG, GNU Privacy Guard) are message encryption and signature programs. They operate on messages in the OpenPGP format. Use this tag for applications and plug-ins to produce or manipulate encrypted or signed messages, to handle PGP/GPG keys, or to interact with PGP or GnuPG.