Email privacy: Pretty Good Privacy (PGP) and S/MIME.

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Hi friends i need material about the following topic.
Any one give valuable notes about that topic...plz.

There's plenty of information about PGP on the Internet. Do you need information about anything specific about PGP?

Now i am in 3rd B.Tech sir.
I need basic information only.

i can tell you only about PGP.pgp( pretty good privacy) is the most recognise public key encryption program (the encryption program refers to algorithm scheme that encode plain text into a non readable form or cypertext the message,providing privacy)in the world.
three work handle by pgp-
1.pgp provode privacy ,missing from online
2.it change plain readable text into a complex code of character that is completly readable.
3.the email travel to the destination in cyphered form.
4.the receipnt use pgp to decrypt the message back into readable form.
the simple method behind public key incryption is based around the creation of customised key pair .that is public key and private key.public key encrypt message and private key decrypt message.plz anyone can if further explain about process...??????