KeyChain for use with Web Cryptography API in Node.js

Usage

Install the package

$ npm install https://github.com/anvilresearch/keychain.git

Load the module

const KeyChain = require('keychain')

Create a new instance by passing a descriptive object to the KeyChain constructor. This object can have any naming or nesting scheme, as long as the last nested object contains parameters describing key generation. At a bare minimum, this must include an alg property with a JWA algorithm name as its value. Currently, RS256, RS384, and RS512 are supported.

let keys = new KeyChain({
  a: { b: { alg: 'RS256' } },
  c: { d: { alg: 'RS256' } },
  e: { f: { alg: 'RS256', modulusLength: 2048 } // default is 4096
}) 

This initialized a KeyChain instance but didn't generate keys. To generate keys according to the object passed to the keychain, call rotate(). The rotate() method returns a promise for the keychain.

keys.rotate()

Once keys have been generated, they can be accessed as CryptoKey or JWK objects, according to the object structure defined by the caller.

Access CryptoKey objects for Web Crypto API operations:

keys.a.b.privateKey
keys.a.b.publicKey

Access JWK objects:

keys.a.b.privateJwk
keys.a.b.publicJwk

Key rotation also generates a JWK Set in object and JSON form:

keys.jwks     // JWK Set object
keys.jwkSet   // JWK Set JSON string

Running tests

Nodejs

$ npm test

MIT License

Copyright (c) 2016 Anvil Research, Inc.