node-hkdf

The HMAC-based Key Derivation Function for node.js.

spec: https://tools.ietf.org/html/rfc5869

install

npm install hkdf

use

const HKDF = require('hkdf');

// `key` is a Buffer, that can be serialized however one desires
var hkdf = new HKDF('sha256', 'salt123', 'initialKeyingMaterial');
var key = hkdf.derive('info', 42);
key.toString('hex');

license

Apache License 2.0