Security • Estimated 55m

Diffie-Hellman Key Exchange

fundamentals.diffie-hellman-key-exchange

Diffie-Hellman lets two parties derive a shared secret over a public channel using group exponentiation. In Bitcoin systems, elliptic-curve variants appear in encrypted transport and protocol design patterns.

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Curated resources (3)

• BIP 324: v2 P2P Transport Protocol (article) Shows how modern Bitcoin transport uses ECDH-derived shared secrets.
• secp256k1 ECDH API (article) Concrete library interface for ECDH over secp256k1.
• Bitcoin Core Academy: P2P Attacks (article) Threat-model context for why encrypted and authenticated transport matters.

Direct prerequisites (2)

• Cyclic Groups
• Discrete Logarithm Problem

Direct dependents (2)

• Silent Payments
• V2 P2P Transport (BIP324)

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