#20unit 1technology solutions
Public key encryption
Asymmetric encryption with key pairs.
Simple public key exchange
Alice wants to send a confidential message to Bob. Alice encrypts the message using Bob's widely available public key. Only Bob, who has the matching private key, can decrypt the message. Even if the encrypted message is intercepted, no one else can read it.
Public key cryptography was invented in 1976 by Whitfield Diffie and Martin Hellman.