Ethereum Wallet Sample code

var Wallet = require('ethereumjs-wallet');
let hdkey = require('ethereumjs-wallet/hdkey');
var EthUtil = require('ethereumjs-util');
let bip39 = require("bip39");

// input secret
const privateKeyBuffer = EthUtil.toBuffer('0xb3daa3c32f6f6c71a3fc0c3af081e971c78706459f358b43451a1ba0d4ef3dba');
const wallet = Wallet.fromPrivateKey(privateKeyBuffer);

// public key from secret key
const publicKey = wallet.getPublicKeyString();                                                                                                                                                                                                                                                               
console.log('public key: ' + publicKey);

// address from secret key
const address = wallet.getAddressString()
console.log('addres   : ' + address);

const mnemonic = "soldier clump basket brain suit wire whisper equip aim neck kangaroo rely";

// hd wallet from mnemonic
let hdwallet = hdkey.fromMasterSeed(bip39.mnemonicToSeedSync(mnemonic));

// master key
console.log('master private key: ' + hdwallet.privateExtendedKey())
let wallet_hdpath = "m/44'/60'/0'/0/";

// generate wallets
for (let i = 0; i < 5; i++) {
  let wallet = hdwallet.derivePath(wallet_hdpath + i).getWallet();
  let address = wallet.getAddressString();
  console.log('address-' + i + ': ' + address);
}

public key: 0x12dd7df75e3a2b2b2d17358221f0811a6a19251c66cf502a6ca02a23205f3d27b7c416eca8e9e7ae45e47862ff7bf0ccc013f27a81e4fc9a0d513808db28d90b
addres   : 0x72a60325bbcff70e6278f03482b7ae44d175503b
master private key: xprv9s21ZrQH143K3oPizmavifFSRXSdVFTxVn3zdWqa3X2AqAidQnef4sxPVLsFM9PtZcASh14fr3e1Fwac7qdvKyqQgdg8tCKTDQ4LLgkvLmh
address-0: 0x72a60325bbcff70e6278f03482b7ae44d175503b
address-1: 0x2bd38b66259092248e9a1943acd63dffda479010
address-2: 0x48a0806dc7c143f4e31a68dd5590cb57b1b89cda
address-3: 0x54072de9b7c7d29dbf189fb0ed4670d53975a6a6
address-4: 0xf6b82083948be7ce8e36699a00041ddc1be2354d

Comments

[AKramer1983]

To create a wallet, you need first to determine the location of its placement (on your computer or the network) and then choose the most suitable one for us. In its activation, the system will require the user to enter personal data. A wallet number will be generated, with which you can perform incoming/outgoing operations. Usually, everyone creates a wallet on the Official website of the Ether. But you can look at reviews of cryptocurrency exchanges and choose the right one for you. But in general, a wallet can be created in just a few minutes.

[Aaron Skomra]

TypeError: hdkey.fromMasterSeed is not a function