hanwencheng

Metadata and Network Specs Update on Parity Signer

Get the metadata of certain chain

Switch to the target chain.

use script on polkadot.js with code

const metadata = await api.runtimeMetadata.asCallsOnly.toHex();

hanwencheng

Test CheatSheet

1. Recover Identity with seed split cradle example drum veteran swear cruel pizza guilt surface mansion film grant benefit educate marble cargo ignore bind include advance grunt exile grow.
2. Create account under Kusama Network which is//kusama_CC2//default.
3. Commet out this line. line 134 and line 137 in QRScanner.js.
4. Click scan will direct lead to the message detail page and signing page.

Signing test related data

// kusama_CC2//default

hanwencheng

const signedData = '0168b4c2a0ebc5bb68ebe6e3fe030cb8fabe4e649326a9fe973b0552e7e528f732754be818dfadd7aa6f2c4c84bfb53a51e0c2668f719251580755d68b751c4d8f';
const seed = 'split cradle example drum veteran swear cruel pizza guilt surface mansion film grant benefit educate marble cargo ignore bind include advance grunt exile grow'
const dataToSign = '49a00000100005301020a06171a5ad1be958012949789fb94a2ba91210a42e2a38b33ef5376b1c43450a40600ff94d3487c7d14e2a5c28abc8cc16cad9dfe5195562a594f82e0b290dd566d0b5c070010a5d4e875010000b90000000d667fd278ec412cd9fccdb066f09ed5b4cfd9c9afa9eb747213acb02b1e70bcda2680fb733de798a1b40472fb657afcb860537651f6b4fa5d884f3f20aeefff0ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11'

hanwencheng

const networks = [
  {
    name: 'kusama',
    genesisHash: "0xb28bd355a4cd1df46bc56a2949bce8feb84eebc864f1c3f1f77668bd3b6559b3",
    prefix: 2,
    decimals: 12,
    pathID: 'kusama',
    title: 'Kusama CC2',
    unit: 'KSM',
    color: '#e6007a',

hanwencheng

Parity-Signer Secure Key Storage Proposal

Here I conclude the recent research and discussions with the storage of the seed/private key in parity-signer.

Current Implementation

Currently, we require a user to input a pin code for encrypting the seed, and then put the encrypted seed together with other account data into a secure store. The secure store then uses the native KeysStore or KeyChain to store the encrypted account data.

Possible improvement

hanwencheng

const result = people.reduce((acc, person)=>{
  if(person.age > 40 || person.age < 30)
    return acc
  
  acc[person.gender].push(person)
  return acc;
}, {male :[], female:[]})

hanwencheng

package main

import (
	"log"
	"github.com/parnurzeal/gorequest"
	"sync"
	"time"
	"strconv"
	"os"
	"fmt"

hanwencheng

var mongoDbQueue = require('./mongodb-queue.js');
var logger       = require('./logger.js').logger;
var async        = require('async');
var respond      = require('../lib/response-handler.js');
var Promise      = require('bluebird');
var payments     = require('../api/payments.js');

const queueCheckInterval = 3000;
const poolSize = 1000;
const visibilityTime = 500;

hanwencheng

zugzug