Definition ∞ A Key Exchange Protocol is a cryptographic method that allows two or more parties to agree on a shared secret key over an insecure communication channel. This shared secret can then be used for symmetric encryption of subsequent communications, ensuring confidentiality and integrity. The protocol is designed so that unauthorized eavesdroppers cannot determine the shared key. It forms a foundational component for secure digital interactions.
Context ∞ Key exchange protocols are regularly featured in news concerning network security, data privacy, and the development of secure communication standards. Innovations in these protocols, especially those addressing quantum computing threats, are closely watched. Comprehending key exchange mechanisms is essential for understanding the security foundations of internet communication and digital asset transactions.
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