create-ecdh

Key Pair Generation

This feature allows the generation of ECDH key pairs, which can be used for secure key exchange.

const createECDH = require('create-ecdh');
const ecdh = createECDH('secp256k1');
ecdh.generateKeys();

Compute Shared Secret

Using this feature, one can compute a shared secret given the other party's public key, which can then be used to derive encryption keys for secure communication.

const theirPublicKey = Buffer.from('their public key hex', 'hex');
const sharedSecret = ecdh.computeSecret(theirPublicKey);

Get Public Key

This feature retrieves the public key of the generated ECDH key pair, which can be shared with the other party.

const publicKey = ecdh.getPublicKey();

Set Private Key

This feature sets the private key for the ECDH instance, which can be used to compute the shared secret or regenerate the public key.

const privateKey = Buffer.from('your private key hex', 'hex');
ecdh.setPrivateKey(privateKey);