azuchi

# ECDSAを使ったAdaptor Signature
require 'bitcoin'
require 'paillier'

point_field = ECDSA::PrimeField.new(ECDSA::Group::Secp256k1.order)

# アリスが鍵ペアを生成
alice_key = Bitcoin::Key.generate
alice_pub = alice_key.to_point

azuchi

# 効率的なECDSAの2-of-2のマルチシグ
require 'bitcoin'
require 'paillier'

# アリスが鍵ペアを生成
alice_key = Bitcoin::Key.generate
alice_pub = alice_key.to_point

# ボブが鍵ペアを生成
bob_key = Bitcoin::Key.generate

azuchi

# using bitcoinrb
require 'bitcoin'

# oracle

# oracle's key. V = vG
o_key = Bitcoin::Key.new(priv_key: '860f6a0296aae3901e374be83d962351366386fb5f65ffef75c9f389c256e724')
V = o_key.to_point
v = o_key.priv_key.to_i(16)

azuchi

require 'ecdsa'
require 'bitcoin'

tx = Bitcoin::Tx.parse_from_payload('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'.htb)
prev_out = Bitcoin::Script.parse_from_payload('76a9143b9722f91a2e50d913dadc3a6a8a88a58a7b859788ac'.htb)

## ↑の0番目のインプットを署名する際に使用するsighash＝署名対象のメッセージ
sighash = tx.sighash_for_input(0, prev_out)

# 実際の署名

azuchi

Keybase proof

I hereby claim:

• I am azuchi on github.
• I am azuchi (https://keybase.io/azuchi) on keybase.
• I have a public key ASBUJG8L-SCcFbHbeu7C5hYz3RPwIr1wcgPe0kw3iErnrgo

To claim this, I am signing this object:

azuchi

require 'bitcoin'

class CrawlerConnection < EM::Connection

  attr_accessor :message
  attr_reader :host
  attr_reader :port

  def initialize(host, port)
    @message = ''

azuchi

module Bech32

  autoload :SegwitAddr, 'bech32/segwit_addr'

  SEPARATOR = '1'

  CHARSET = %w(q p z r y 9 x 8 g f 2 t v d w 0 s 3 j n 5 4 k h c e 6 m u a 7 l)

  GF1024_EXP = [
      1, 303, 635, 446, 997, 640, 121, 142, 959, 420, 350, 438, 166, 39, 543,

azuchi

require 'murmurhash3'

class BloomFilter

  SEED_BASE = 0xFBA4C795

  attr_reader :bits
  attr_reader :hash_funcs
  attr_reader :tweak

azuchi

{
  "asset_ids": [
    "oQDVsbKEAkkBz1nN5BTGUwMxu9Y5CmhFEU"
  ],
  "contract_url": "",
  "name_short": "BP",
  "name": "Blockchain Programing",
  "issuer": "Shigeyuki Azuchi",
  "description": "Blockchain Programingの検証用コインです",
  "description_mime": "text/x-markdown; charset=UTF-8",

azuchi

require 'bitcoin'
require 'eventmachine'

Bitcoin.network = :testnet3

class Connection < EM::Connection

  attr_reader :host, :port, :parser

  def initialize(host, port)