Type: string
Default: ``default''
This variable determines which PGP version is used for key ring operations like extracting keys from messages and extracting keys from your keyring. If you set this to default, the default defined in $pgp_default_version is used. Set this to pgp2 (PGP 2.*), pgp5 (PGP 5.*), or gpg (GNU privacy guard) if you want to use a different PGP version for key operations.