This repo describes how to generate a shared secret between two clients, Alice and Bob, using Elliptic-curve Diffie–Hellman (ECDH) key exchange. This repo uses secp256k1 curve which will be used to generate a shared secret key that is 256 bits long, which will be as secure as a normal 3072-bit key generated using plain Diffie-Hellman. You can change the curve name to use other curves to get a desired bit length key (like: 384 bits, using secp384r1 curve)
Elliptic curves are much more powerful in the way that they are more secure and moreover they require less computing power for the same amount security. The shared key generated using ECDH which is 256 bit long is as secure as a 3072 bit long shared key generated using traditional Diffie-Hellman.
- Clone the repo using
git clone https://github.com/trulymittal/ECDH-nodejs.git- Open terminal inside the downloaded project and install the dependencies using:
npm install- Finally run the script using:
npm startThis project is licensed under the MIT License.