Last month, we explored the fundamentals of traditional Diffie-Hellman Key Exchange (DHKE) using modular exponentiation. Building on that approach, we’ll now look at a more modern variant: Elliptic Curve Diffie-Hellman (ECDH). The core concept remains the same: two parties generating a shared secret without transmitting it – the underlying math shifts from modular arithmetic to operations on elliptic curves. by Eric Mann