Elliptic Curve Diffie-Hellman (ECDH) is a key agreement protocol that allows two parties to securely exchange cryptographic keys over a public channel using the mathematics of elliptic curves. This method leverages the difficulty of solving the elliptic curve discrete logarithm problem, making it highly secure with relatively smaller key sizes compared to traditional methods. By establishing a shared secret without directly transmitting it, ECDH facilitates secure communications in various applications, including secure messaging and data encryption.
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