+Key exchange is the essential process allowing two parties to establish a shared secret, often over an insecure communication channel. This shared secret then becomes the foundation for secure [Encryption](/wiki/Encryption), ensuring privacy and integrity for subsequent messages. It is a fundamental pillar of modern [Cryptography](/wiki/Cryptography), enabling secure digital interactions without prior key sharing.
+## See also
+- [Diffie-Hellman](/wiki/Diffie-Hellman)
+- [Public Key](/wiki/Public_Key)
+- [Symmetric Key](/wiki/Symmetric_Key)
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