Retrieving the private/ public key for a specific path from truffle/hdwallet-provider

[Jdodo45]

In brief

I can't find a way to retrieve the private key / public key / public address for a web3 account loaded via a provider. I have tried the web3.eth.accounts command but I am not getting the private key / public key / public address .

const web3 = new Web3(provider);
web3.eth.accounts

What I am trying to do in details

I would like to have a HD wallet for receiving ethers on different public keys (and later selling them)
Following the advice in the doc, I am using truffle/hdwallet-provider for the HD wallet. So now I am trying to retrieve the private key, the public key and possibly the public address via web3js for the provider created via truffle/hdwallet-provider wallet

Steps to Reproduce

This is my code which I run several time in different node console in a cmd.

Before starting the node console, I start a cmd with geth --rpc --rpcport 8545 while internet is turned off so that I don't have to download/sync the blockchain

const mnemonicPhrase = 'some words ... '

const HDWalletProvider = require("@truffle/hdwallet-provider");
Web3 = require('web3');


provider = new HDWalletProvider({
  mnemonic: mnemonicPhrase,
  providerOrUrl: "http://localhost:8545",
  numberOfAddresses: 1,
  shareNonce: true,
  derivationPath: "m/44'/0'/0'/0/"
});

const web3 = new Web3(provider);
web3.eth.accounts

Expected behavior and Actual behavior

There should be a way to retrieve the private/public key via web3.eth.accounts but I am only getting a single address

Thanks a lof for your help!

Environment

• Operating System: windows
• Ethereum client:
• Truffle version (truffle version): @truffle/hdwallet-provider@1.4.0 (web3@1.3.6)
• node version (node --version): v14.16.1
• npm version (npm --version): 6.14.12

P.S: sorry for posting here but I have already asked on stackoverflow but I didn't get any answer and I have been stuck on this for more than 2 weeks.

[Jdodo45]

I finally gave up using truffle and web3js and use ethereumjs-util instead.

Here is the code mainly from Harsha Goli

bip39 = require('bip39');
ethUtil = require('ethereumjs-util');
hdkey = require('hdkey');

const mnemonic = bip39.generateMnemonic(256); // if you already have a mnemonic you can put it here
const seed = bip39.mnemonicToSeedSync(mnemonic);
const root = hdkey.fromMasterSeed(seed);
const masterPrivateKey = root.privateKey.toString('hex');

var path = "m/44'/60'/0'/0/0"  // change path 
var addrNode = root.derive(path); 
var pubKey = ethUtil.privateToPublic(addrNode._privateKey);
var addr =  '0x' +  ethUtil.publicToAddress(pubKey).toString('hex');
var address = ethUtil.toChecksumAddress(addr);


console.log( "\n", "\n", "\n","ACCOUNT ", path, "\n", "private key : 0x", addrNode._privateKey.toString('hex'), "\n", "public key : ",pubKey.toString('hex'), "\n", "address : ", address)

[italoHonoratoSA]

Web3.js is much more complicated when it comes to handling accounts and extracting private keys through mnemonic.

Check my reviews here:
#1594 (comment)

Check a solution here:
https://ethereum.stackexchange.com/questions/102090/retrieving-the-private-public-key-with-web3js-for-a-specific-wallet-provided-by