hhanh00

Digital Signatures

Intro

Let's imagine an island whose inhabitants all have an identification number and a phone number. The identification number (ID) starts from 1 and the phone number is a 10 digit number. They have a phone directory that lists everyone's ID and phone number.

The phone number is given to the user in a way that is difficult to understand.

Given a phone number, we cannot figure out the person ID. There is no reverse directory.

Proposed Architecture

Market data provider bridge

Interface to the Market data vendor (RMDS, Bloomberg, etc.)
Convert their data model into our own
- Data fields
- Image vs Refresh messages
- Market by order, by depth
Outputs tick by tick in unified data model

If you get a validation loop, check that the jwt cookie could be set:

Look for a no jwt message,
Check the Set-Cookie LassoCookie,
in particular, Domain should be set, if not set it in the config

If you get an error 'no username in jwt', make sure that the open id provider gave an email in the response to /userinfo In Hydra, it is returned in the id_token by the consent endpoint. For reference, check okta

	type ParserState = {
	InHeader: bool
	Command: string
	Checksum: int
	PayloadLength: int
	Data: byte[]
	}

	type BitcoinMessageParser(networkData: IObservable<byte[]>) =
	let headerLen = 24

	var http = require('http'),
	httpProxy = require('http-proxy'),
	express = require('express');

	// create a server
	var app = express();
	var proxy = httpProxy.createProxyServer({ target: 'http://localhost:8080', ws: true });
	var server = require('http').createServer(app);

	// proxy HTTP GET / POST

	import scalaz._

	case class Valuation(realized: BigDecimal, unrealized: BigDecimal) {
	def addR(r: BigDecimal) = this copy (realized = this.realized+r)
	def addU(u: BigDecimal) = this copy (unrealized = this.unrealized+u)
	}

	object Valuation {
	def apply() = new Valuation(0, 0)
	}

	case class MyData(id: String, d: Int)

	object MyData {
	implicit def dataMarshaller: ToEntityMarshaller[MyData] = {
	Marshaller.StringMarshaller.wrap(MediaTypes.`application/vnd.api+json`)(data => {
	val jo = JsObject("data" ->
	JsObject("type" -> JsString("dashboard"), "id" -> JsString(data.id),
	"attributes" -> JsObject("exposure" -> JsNumber(data.d)))
	)
	jo.compactPrint

	d_apt = template '/etc/apt/sources.list.d/d-apt.list' do
	source 'd-apt.list.erb'
	notifies :run, 'execute[update-d-home]', :immediately
	end

	execute 'update-d-home' do
	command 'apt-get update && apt-get -y --allow-unauthenticated install --reinstall d-apt-keyring && apt-get update'
	only_if { d_apt.updated_by_last_action? }
	end