Convert Ethereum private keys to EOS private keys (the "Fallback method" to access your EOS tokens).

convert.js

// Extracted from https://github.com/eoscafe/eoskeyio

const ecc = require('eosjs-ecc');
const eth = require('ethereumjs-util');

let ethereumPrivateKey = 'FILL THIS IN';

if(eth.isValidPrivate(Buffer.from(ethereumPrivateKey, 'hex'))) {
	let ethereumAddress = '0x' + eth.privateToAddress(Buffer.from(ethereumPrivateKey, 'hex')).toString('hex')
	let ethereumPublicKey = eth.privateToPublic(Buffer.from(ethereumPrivateKey, 'hex')).toString('hex')

	// Create EOS keys
	let eosWIF = ecc.PrivateKey(Buffer.from(ethereumPrivateKey, 'hex')).toWif()
	let convertedEOSPrivateKey = eosWIF
	let convertedEOSPublicKey = ecc.privateToPublic(eosWIF)

	console.log(`EOS Private Key: ${convertedEOSPrivateKey}`)
	console.log(`EOS Public Key: ${convertedEOSPublicKey}`)
} else {
	console.log("Invalid Ethereum Private Key")
}