Add new eth-lightwallet salting to vault.

eth-lightwallet was previously not salting vault passwords, potentially making it easier to crack them once obtained.

This branch incorporates the API changes to allow us to take advantage of the new salting logic.

This is still throwing deprecation warnings, but that's actually a bug in eth-lightwallet I wrote, [I've submitted a PR for that here](https://github.com/ConsenSys/eth-lightwallet/pull/116).

Fixes #555

app/scripts/lib/idStore.js

@@ -3,7 +3,7 @@ const inherits = require('util').inherits
 const async = require('async')
 const ethUtil = require('ethereumjs-util')
 const EthQuery = require('eth-query')
-const LightwalletKeyStore = require('eth-lightwallet').keystore
+const KeyStore = require('eth-lightwallet').keystore
 const clone = require('clone')
 const extend = require('xtend')
 const createId = require('web3-provider-engine/util/random-id')
@@ -50,15 +50,15 @@ IdentityStore.prototype.createNewVault = function (password, entropy, cb) {
   if (serializedKeystore) {
     this.configManager.setData({})
   }
+
   this._createIdmgmt(password, null, entropy, (err) => {
     if (err) return cb(err)
 
-    this._loadIdentities()
-    this._didUpdate()
     this._autoFaucet()
 
     this.configManager.setShowSeedWords(true)
     var seedWords = this._idmgmt.getSeed()
+
     cb(null, seedWords)
   })
 }
@@ -143,6 +143,7 @@ IdentityStore.prototype.revealAccount = function (cb) {
 
   keyStore.setDefaultHdDerivationPath(this.hdPathString)
   keyStore.generateNewAddress(derivedKey, 1)
+
   configManager.setWallet(keyStore.serialize())
 
   this._loadIdentities()
@@ -436,72 +437,57 @@ IdentityStore.prototype._mayBeFauceting = function (i) {
 //
 
 IdentityStore.prototype.tryPassword = function (password, cb) {
-  this._createIdmgmt(password, null, null, cb)
+  var serializedKeystore = this.configManager.getWallet()
-}
+  var keyStore = KeyStore.deserialize(serializedKeystore)
 
-IdentityStore.prototype._createIdmgmt = function (password, seed, entropy, cb) {
+  keyStore.keyFromPassword(password, (err, pwDerivedKey) => {
-  const configManager = this.configManager
-
-  var keyStore = null
-  LightwalletKeyStore.deriveKeyFromPassword(password, (err, derivedKey) => {
     if (err) return cb(err)
-    var serializedKeystore = configManager.getWallet()
 
-    if (seed) {
+    const isCorrect = keyStore.isDerivedKeyCorrect(pwDerivedKey)
-      try {
-        keyStore = this._restoreFromSeed(password, seed, derivedKey)
-      } catch (e) {
-        return cb(e)
-      }
-
-    // returning user, recovering from storage
-    } else if (serializedKeystore) {
-      keyStore = LightwalletKeyStore.deserialize(serializedKeystore)
-      var isCorrect = keyStore.isDerivedKeyCorrect(derivedKey)
     if (!isCorrect) return cb(new Error('Lightwallet - password incorrect'))
 
-   // first time here
-    } else {
-      keyStore = this._createFirstWallet(entropy, derivedKey)
-    }
-
-    this._keyStore = keyStore
-    this._idmgmt = new IdManagement({
-      keyStore: keyStore,
-      derivedKey: derivedKey,
-      hdPathSTring: this.hdPathString,
-      configManager: this.configManager,
-    })
-
     cb()
   })
 }
 
-IdentityStore.prototype._restoreFromSeed = function (password, seed, derivedKey) {
+IdentityStore.prototype._createIdmgmt = function (password, seedPhrase, entropy, cb) {
-  const configManager = this.configManager
+  const opts = { password }
-  var keyStore = new LightwalletKeyStore(seed, derivedKey, this.hdPathString)
+  if (seedPhrase) {
-  keyStore.addHdDerivationPath(this.hdPathString, derivedKey, {curve: 'secp256k1', purpose: 'sign'})
+    opts.seedPhrase = seedPhrase
-  keyStore.setDefaultHdDerivationPath(this.hdPathString)
-
-  keyStore.generateNewAddress(derivedKey, 1)
-  configManager.setWallet(keyStore.serialize())
-  if (global.METAMASK_DEBUG) {
-    console.log('restored from seed. saved to keystore')
   }
-  return keyStore
+
+  KeyStore.createVault(opts, (err, keyStore) => {
+    if (err) return cb(err)
+
+    this._keyStore = keyStore
+
+    keyStore.keyFromPassword(password, (err, derivedKey) => {
+      if (err) return cb(err)
+
+      keyStore.addHdDerivationPath(this.hdPathString, derivedKey, {curve: 'secp256k1', purpose: 'sign'})
+
+      this._createFirstWallet(derivedKey)
+
+      this._idmgmt = new IdManagement({
+        keyStore: keyStore,
+        derivedKey: derivedKey,
+        configManager: this.configManager,
+      })
+
+      cb()
+      this._loadIdentities()
+      this._didUpdate()
+    })
+  })
 }
 
-IdentityStore.prototype._createFirstWallet = function (entropy, derivedKey) {
+IdentityStore.prototype._createFirstWallet = function (derivedKey) {
-  const configManager = this.configManager
+  const keyStore = this._keyStore
-  var secretSeed = LightwalletKeyStore.generateRandomSeed(entropy)
-  var keyStore = new LightwalletKeyStore(secretSeed, derivedKey, this.hdPathString)
-  keyStore.addHdDerivationPath(this.hdPathString, derivedKey, {curve: 'secp256k1', purpose: 'sign'})
   keyStore.setDefaultHdDerivationPath(this.hdPathString)
-
+  keyStore.generateNewAddress(derivedKey)
-  keyStore.generateNewAddress(derivedKey, 1)
+  var addresses = keyStore.getAddresses()
-  configManager.setWallet(keyStore.serialize())
+  this._ethStore.addAccount(addresses[0])
-  console.log('saved to keystore')
+  this.configManager.setWallet(keyStore.serialize())
-  return keyStore
 }
 
 // get addresses and normalize address hexString

test/unit/idStore-test.js

@@ -23,6 +23,7 @@ describe('IdentityStore', function() {
       })
 
       idStore.createNewVault(password, entropy, (err, seeds) => {
+        assert.ifError(err, 'createNewVault threw error')
         seedWords = seeds
         originalKeystore = idStore._idmgmt.keyStore
         done()
@@ -59,6 +60,7 @@ describe('IdentityStore', function() {
   describe('#recoverFromSeed BIP44 compliance', function() {
     let seedWords =  'picnic injury awful upper eagle junk alert toss flower renew silly vague'
     let firstAccount = '0x5d8de92c205279c10e5669f797b853ccef4f739a'
+    const salt = 'lightwalletSalt'
 
     let password = 'secret!'
     let accounts = []
@@ -70,7 +72,7 @@ describe('IdentityStore', function() {
       idStore = new IdentityStore({
         configManager: configManagerGen(),
         ethStore: {
-          addAccount(acct) { accounts.push(acct) },
+          addAccount(acct) { accounts.push('0x' + acct) },
         },
       })
     })