Feature: Use HD wallet

[tcoulter]

TODO:

• allow -m/--mnemonic to input an HD wallet mnemonic
• print out private keys
• print out mnemonic
• -d option uses a default mnemonic instead of default seed
• Finally, create accounts through the HD wallet rather than generating them randomly like we do now.

Sample code provided by @axic:

const bip39 = require('bip39')
const hdkey = require('ethereumjs-wallet/hdkey')

var mnemonic = 'awake book subject inch gentle blur grant damage process float month clown'
var wallet = hdkey.fromMasterSeed(bip39.mnemonicToSeed(mnemonic)

var account = wallet.derivePath("m/44'/60'/0'/0/" + index) // index is a number
var address = account.getWallet().getAddressString() // 0x prefixed String
var publicKey = account.getWallet().getPublicKey() // Buffer
var secretkey = account.getWallet().getPrivateKey() // Buffer

[tcoulter]

Someone should have told me I've been spelling mnemonic wrong the whole time. :)

[tcoulter]

Suggested output on initialization should look like this:

EthereumJS TestRPC v1.2.1

Available Accounts
==================
0xbebf6e6aa73735779891d0f6ee00476781e9bc4d
0xda3dc42d8957da6f20081392e2c474694b4e49f3
0x856a2f4f43a17a11b99c6f1d2a94120ecc5c1e58
0x368e4f55b4d148fbb31c5a0edd06b09a15a5a360
0x9491b630ead587ecab09f89bbe81de54a3011f54
0x2ad39db1b0b2aeb914b65f360bbe6fbda8cba8d6
0x64dd2a806a9299171c1d426150bb4840d8860206
0xc54dc905e9f4b2622473dac825ec1abdb35e7c5f
0x2da766f19671de5923c2b407ba34b9054d3fa2c9
0x0a5fdda3071ce95be3f77e7034f04494a81565a3

Private Keys
==================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HD Wallet Mnemonic
==================
awake book subject inch gentle blur grant damage process float month clown

Listening on localhost:8545

[tcoulter]

@axic Does that look right to you?

[tcoulter]

@axic I'm going to start on this now, see what I can do.

[axic]

Looks good, I might prefix each of the account/key lines with the index so it is easy to see the pairs.

Also list the base HD path below the mnemonic: m/44'/60'/0'/0 or m/44'/60'/0'/0/{accountIndex}?

[tcoulter]

Hmm. I can print that. What is an hd path anyway? And quick links?

[axic]

It is the derivation path and defines the steps involved in calculating an account.

BIP44 would be a useful document to understand the user-side implications of the path, without going into detail how to calculate things.

[tcoulter]

@axic Check it: #44

🔥

[tcoulter]

Would you look at that. BIP44 on issue #44. 👌

[axic]

... in issue #42. It must be right 🤓

[tcoulter]

Closed. Thanks guys!