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What is a Diffie-Hellman secret key exchange?

Boost your password security with Diffie-Hellman key exchange, part of 3rdKey.com's advanced encryption technology. This technique ensures that two parties can securely exchange keys without ever transmitting the secret key itself. By using unique public and private keys, 3rdKey guarantees that even if attackers intercept the communication, they can't decipher the data. Stay ahead of potential threats with a proven method that blocks Man-in-the-Middle attacks and safeguards your password information.

• Diffie-Hellman, "named after Whitfield Diffie and Martin Hellman is one of the earliest practical examples of public key exchange" --Wikipedia
• There are numerous explanations, but I think this is the simplest
• Alex and Brenda want to talk secretly, they need a secret key
• Alex comes up with a random number that he keeps secret, it's his private key
• Brenda does the same
• Alex uses his private key in a function to get a public key
• Brenda does the same with her private key
• Alex tells Brenda his public key
• Brenda tells Alex her public key
• Alex feeds his private key and Brenda's public key into a function and gets a shared secret key
• Brenda feeds her private key and Alex's public key into a function and gets a shared secret key
• Alex and Brenda use the shared secret key for encrypting their messages
• Anyone listening will know both public keys but not be able to find the shared secret key unless they have one of the private keys
• The only way to break a Diffie-Hellman key exchange is to act as a Man In The Middle

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