See also: Cryptography | Public-Key Cryptosystem | RSA
A strong Public-Key Cryptosystem that allows for two parties who have never met to communicate. It is used in PGP and GPG as well as RSA and DSA.
RSA Security (http://www.rsasecurity.com/) – What is Diffie-Hellman? (http://www.rsasecurity.com/rsalabs/faq/3-6-1.html)
TakeDown.NET -> “Diffie-Hellman”