public key exchange

Public key exchange is a secure method for two parties to share information over an insecure channel. Each person has a pair of keys: a public key, which they share openly, and a private key, kept secret. When they want to communicate securely, they exchange public keys. Using their own private key and the other's public key, they can encrypt or decrypt messages, ensuring only the intended recipient can read the information. This process allows safe communication without the need to share secret information in advance, maintaining privacy even over unsecured networks.