We currently have 4 versions of PGP software installed. They are
To see the full installation, including documentation, check their
install directory.
However, you may simply use the commands, with the appropriate
command name, available on standard paths:
Note that these versions are not completely compatible with one another. I suggest that you choose one, and stick with it. My advice, at present, would be to use GnuPG.
It seems likely that PGP 6.5.8 will be the last version from pgp.com that is available for unix. They have released versions 7 and 8 for windows, but not for unix. GnuPG is the only unix version that is being kept up to date with modern standards.
Both "mutt" and "exmh" have some internal support for using PGP with email. Note that "exmh" is a GUI frontend to the "MH" or "nmh" mail software. If you are not currently using those, do not attempt to use "exmh".
To use PGP with the "mutt" mail program, add a line to your ".muttrc" file
source /opt/mutt/etc/gpg.rcThat's the line for use with GnuPG. For other versions, replace the "gpg.rc" with either "pgp2.rc" or "pgp5.rc" or "pgp6.rc", depending on the PGP version you are using.
Some references: