kingsleyh

#!/bin/bash

# Chrome Repo
sudo apt-get install fonts-liberation xdg-utils libxss1 libappindicator1 libindicator7
wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
sudo dpkg -i google-chrome*.deb

sudo apt-get update

# Download

kingsleyh

require "crsfml"
require "entitas"

# ---- domain ----
module Domain
  struct Dimension
    property rows : Int32
    property cols : Int32

    def initialize(@rows, @cols); end

kingsleyh

    def start_workers(difficulty, block)
      @workers = MinerWorker.create(@num_processes)
      @workers.each do |w|
        spawn do
          loop do
            break unless w.can_run
            nonce_found_message = w.receive.try &.to_s || "error"

            debug "received nonce #{nonce_found_message} from worker"

kingsleyh

class Job
  def self.create(number_of_jobs : Int32) : Array(Job)
    jobs = [] of Job
    inbound = Channel(String).new
    outbound = Channel(String).new

    number_of_jobs.times do |_|
      job = Job.new(inbound, outbound)
      job.run
      jobs << job

kingsleyh

def self.verify2(hex_public_key : String, message : String, r : String, s : String)
    pkey = LibECCrypto.EVP_PKEY_new()

    # Create a EC key structure, setting the group type from NID
    eccgrp_id = LibECCrypto.OBJ_txt2nid("secp256k1")
    raise "Error could not set EC group" unless eccgrp_id != 0
    myecc = LibECCrypto.EC_KEY_new_by_curve_name(eccgrp_id)
    raise "Error could not create curve" if myecc.null?

    # convert binary public key to point

kingsleyh

1. when user invokes the asset via the API then all the work it does should be atomic and either succeed in it's entirety of fail with the appropriate message. This includes if the asset invokes other assets.

kingsleyh

Smart Assets Spec

Summary

A smart asset is an entity which models a digital or real world item and is embedded into the blockchain. If we take the example of a game asset such as a sword we can model its attributes and behaviour in code which when invoked will execute the code and apply the logic.

Smart assets are defined in code and expose a set of external API's that can be invoked by the caller. Both the data that is created by the smart asset and the companion code is stored immutably in the blockchain within versioned transactions. When the code for the smart asset needs to mutate any of the associated data it creates transactions with the updated data and the latest version number. The fast transaction system is essential to make this possible.

kingsleyh

Taro Spec

For MVP initial version:

Requirements:

1. must support basic programming logic, math, functions, variables, collections etc
2. must support json - encoding / decoding / traversal
3. must have http client capability
4. must have crypto capability, openssl

kingsleyh

# http://fm4dd.com/openssl/eckeycreate.htm
# https://stackoverflow.com/questions/34404427/how-do-i-check-if-an-evp-pkey-contains-a-private-key
# https://davidederosa.com/basic-blockchain-programming/elliptic-curve-keys/

lib LibSSL
  fun EC_KEY_generate_key(key : LibC::Int*) : LibC::Int
  fun EC_KEY_new_by_curve_name(i : LibC::Int) : LibC::Int*
  fun OBJ_txt2nid(s : LibC::Char*) : LibC::Int
  fun EVP_PKEY_new : LibC::Int*
  fun EVP_PKEY_assign(pkey : LibC::Int*, type : LibC::Int, key : Void*) : LibC::Int

kingsleyh

/* ------------------------------------------------------------ *
 * file:        eckeycreate.c                                   *
 * purpose:     Example code for creating elliptic curve        *
 *              cryptography (ECC) key pairs                    *
 * author:      01/26/2015 Frank4DD                             *
 *                                                              *
 * gcc -o eckeycreate eckeycreate.c -lssl -lcrypto              *
 * ------------------------------------------------------------ */

#include <openssl/bio.h>