multifeed-sigrid

Provides signature-based replication rules for multifeed that lets anybody who has the 'public' signing key replicate all feeds freely. Only nodes that possess the 'secret' key can create new writers or append feeds to the multifeed.

Usage:

var hypercore = require('hypercore')
var storage = require('random-access-file')
var crypto = require('hypercore-crypto')
var sigrid = require('multifeed-sigrid')

// generate a signing pair
var {publicKey, secretKey} = crypto.keyPair()
// publicKey can be shared freely to help replicating your feeds
// secretKey should be distributed safely to trusted sources

// A multifeed that can create writers
var sig = sigrid(publicKey, storage, secretKey)
var myDevice = multifeed(hypercore, storage)
myDevice.use(sig)
laptop.writer('hylog', function(err, writer) {
  writer.append({ entry: 'Today i took a stroll on the beach' })
})

// A multifeed that cannot create replicating writers
var sig = sigrid(publicKey, storage)
var paidHosting = multifeed(hypercore, storage)

developers-note

This module is not available through npm yet as it depends on an experimental multifeed api, but feel free to start experimenting using this fork: telamon/multifeed/feature/repl-api

The Sigrid API can be considered stable for v1.0.0

Planned features:

• (v1) optional 'feed-control-feed' that let's a secretKey owner mark previously signed feeds for deletion/removal from the swarm. (There's no guarantee that a node you don't control actually will stop replicating killed feeds but for devices you control this can be considered law)

• (v2) let sigrid manage multiple public-keys to create a 'friend' network where each individual replicate's the entire groups signed feeds but remains in full control over his own feeds.