derived-key-storage

Derive a key and secret key file from a name.

npm install derived-key-storage

Usage

const derivedStorage = require('derived-key-storage')
const raf = require('random-access-file')

const { key, secretKey } = derivedStorage(name => raf(name), (name, cb) => {
  // derive your keypair here ...
  // if name is null, this keypair is fresh, otherwise derive from that name
  cb(null, {
    name,
    publicKey,
    secretKey
  })
})

key.read(0, 32, (err, buf) => {
  console.log('public key is', err, buf)
})

API

{ key, secretKey } = derivedStorage(storage, deriver)

Create a new key pair instance. Returns two random-access-storage instances, one for the public key and one for the secret key. The storage function you pass in will be used to store the name of the keypair. The deriver function should look like this:

function (name, cb) {
  cb(null, {
    name,
    publicKey,
    secretKey
  })
}

Where name is a buffer or null containing the name of the keypair. If the name is null you need to return the name of the keypair back to the callback and still will be written along with a length prefix to the storage you pass in.

License

MIT