What is the Elliptic-curve Diffie-Hellman algorithm? • Ell…

What is the Elliptic-curve Diffie-Hellman algorithm?

• Elliptic-curve Diffie-Hellman (ECDH) is a secure key agreement algorithm that allows users to create a shared secret key using their public-private key pairs and a generator point on an elliptic curve.

• ECDH is based on the classical Diffie-Hellman algorithm but employs elliptic curve cryptography for key derivation instead of traditional exponential operations.

• The ECDH key agreement process involves two primary steps: generating keys and calculating the shared secret key.

• Each user generates a private key, which is a randomly chosen number, and a corresponding public key derived from that private key.

• Users keep their private keys confidential while exchanging their public keys with each other.

• Each user computes the shared secret key using their private key and the other user's public key, resulting in an identical shared secret for both parties.

• The successful computation of the shared secret key finalizes the key agreement process, enabling secure communication between the users.