Pretty Good Privacy
Pretty Good Privacy:
Protect Your Data over the Net
by Raj Mathur
Most of us do not worry about the security
of the data that we transmit over the Net. Thinking that it is something cannot be read or
used by anyone else. This is not so. Email over the Internet is like sending a postcard
via regular mail. Anyone who can see it will be able to read it.
So, unless we take extra pain of encrypting
the data we might just think that it ok for others to have access to this data-- be it an
email or some other communication.
Pretty Good Privacy is a way of encryption
and decryption of data so that only the person who the information is meant for see it.
Once encrypted it is not even accessible to the author himself.
This discussion is in context of Linux OS.
However there are windows version of Plugins for email clients available but the similar
What is PGP?
PGP (which stands for Pretty Good Privacy) is a tool which allows you to encrypt data
(typically e-mail) so that it is not viewable by anyone except the person it's meant for.
PGP is also used to unambiguously electronically sign documents so that the identity of
the creator/originator of the document can be proven. As you can guess, PGP is useful for
sending e-mails which should only be read by the addressee, and/or which should be clearly
be proven as having originated from you. There are other uses too -- e.g. RPM packages can
be signed with PGP so that any tampering with the package can be detected.
How does it work?