example-eth-lightwallet.js

const Web3 = require('web3');
const web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));

const lightwallet = require('eth-lightwallet');
const {txutils, signing} = lightwallet;

const fs = require('fs');

const Tx = require('ethereumjs-tx');

let ks = lightwallet.keystore.deserialize(fs.readFileSync(`${__dirname}/ks`));

let i = 0;
ks.keyFromPassword('hello', (err, pwDerivedKey) => {
    i++;
    const FROM = `0x${ks.getAddresses()[0]}`;
    const TO = '0xf1b40f9a11da308d9ee78ecbe04cd83115cf79ea';

    console.log('=======================');
    console.log(`== INITIAL STATE [${i}] ==`);
    console.log('=======================');
    console.log('from: ', FROM, web3.eth.getBalance(FROM).toNumber());
    console.log('to: ', TO, web3.eth.getBalance(TO).toNumber());

    /**
     * 2. Transfer using the RAW transaction, signing by the eth-lightwallet
     */
    console.log('=======');
    console.log('== 2 ==');
    console.log('=======');

    let txOptions = {
        to: '0xf1b40f9a11da308d9ee78ecbe04cd83115cf79ea',
        value: 100
    };

    var valueTx = txutils.valueTx(txOptions)
    var signedValueTx = signing.signTx(ks, pwDerivedKey, valueTx, FROM)

    web3.eth.sendRawTransaction(signedValueTx);

    console.log('from: ', FROM, web3.eth.getBalance(FROM).toNumber());
    console.log('to: ', TO, web3.eth.getBalance(TO).toNumber());
});

output.txt

[~/Sites/smart-kt]$ node var/test/get-balance-eth-lightwallet.js                                        [master]
The new KeyStore constructor has been deprecated in favor of KeyStore.createVault(), and will be removed in a future version. Read issue #109 for info. https://github.com/ConsenSys/eth-lightwallet/issues/109
=======================
== INITIAL STATE [1] ==
=======================
from:  0xac4a5e4d788f2e3e6823466d834bb1d3f00b8b61 22000
to:  0xf1b40f9a11da308d9ee78ecbe04cd83115cf79ea 99999999999999510000
=======
== 2 ==
=======
=======================
== INITIAL STATE [2] ==
=======================
from:  0xac4a5e4d788f2e3e6823466d834bb1d3f00b8b61 22000
to:  0xf1b40f9a11da308d9ee78ecbe04cd83115cf79ea 99999999999999510000
=======
== 2 ==
=======
path/smart-kt/node_modules/eth-lightwallet/node_modules/tweetnacl/nacl-fast.js:2152
       throw new TypeError('unexpected type ' + t + ', use Uint8Array');
       ^

TypeError: unexpected type [object Undefined], use Uint8Array
    at checkArrayTypes (path/smart-kt/node_modules/eth-lightwallet/node_modules/tweetnacl/nacl-fast.js:2152:14)
    at Function.nacl.secretbox.open (path/smart-kt/node_modules/eth-lightwallet/node_modules/tweetnacl/nacl-fast.js:2211:3)
    at Function.KeyStore._decryptString (path/smart-kt/node_modules/eth-lightwallet/lib/keystore.js:179:37)
    at KeyStore.isDerivedKeyCorrect (path/smart-kt/node_modules/eth-lightwallet/lib/keystore.js:157:29)
    at Object.signTx (path/smart-kt/node_modules/eth-lightwallet/lib/signing.js:6:16)
    at ks.keyFromPassword (path/smart-kt/var/test/get-balance-eth-lightwallet.js:38:33)
    at cb (path/smart-kt/node_modules/eth-lightwallet/lib/keystore.js:557:7)
    at path/smart-kt/node_modules/scrypt-async/scrypt-async.js:518:13
    at Immediate.<anonymous> (path/smart-kt/node_modules/scrypt-async/scrypt-async.js:481:11)
    at runCallback (timers.js:570:20)