Validator keys to XRPL account (by @RichardAH)

rekey-xrpl-validator-account.mjs

// Reworked (2) version of https://github.com/RichardAH/xrpl-tools/blob/master/validator-address-tool/vatool.js

// Testnet faucet:
// curl -X POST -H 'content-type:application/json' --data '{"destination":"ryyyyyyyyyyyyyyy", "xrpAmount": "1010" }' https://faucet.altnet.rippletest.net/accounts

// Run:
// node index.mjs pxxxxxxxxxxxxxxxx ryyyyyyyyyyyyyyyyyyyyy wss://testnet.xrpl-labs.com
//                ^^ Validator key  ^^ Rekey to (address)  ^^ Optional: node, default: ws://localhost:6005

import { codec as RAC } from 'ripple-address-codec'
import { signAndSubmit, utils, derive } from 'xrpl-accountlib'
import elliptic from 'elliptic'
const ec = new elliptic.eddsa('ed25519')

if (process.argv.length < 4) {
  console.log(
    `Rekey validator address tool\n` + 
    `Usage: node ${process.argv[1]} validator_secret_key raddr_to_rekey_to [ ws node, default: ws://localhost:6005 ]`
  )
  process.exit(1)
}

const [ PrivateKey, RegularKey, Endpoint ] = [ process.argv[2], process.argv[3], process.argv?.[4] ]
const endpoint = Endpoint ?? 'ws://localhost:6005'

const account = derive.privatekey('ED' + Buffer.from(ec.keyFromSecret(RAC._codec.decode(PrivateKey).slice(1, 33)).secret()).toString('hex').toUpperCase())
const accountInfo = await utils.accountAndLedgerSequence(endpoint, account)

const tx = {
  TransactionType: 'SetRegularKey',
  Account: account.address,
  RegularKey,
  ...accountInfo.txValues,
  NetworkID: accountInfo.txValues.NetworkID >= 1024 ? accountInfo.txValues.NetworkID : undefined,
}

const result = await signAndSubmit(tx, endpoint, account)
console.log(result)