Saving encrypted wallet function is added and ivoked with hardcoded password

Author: dmernies-iohk

examples/wallet/app/actions/account.js

@@ -30,7 +30,7 @@ import {
   getTransactions
 } from '../utils/nodeConnection';
 import { isValidMnemonic, createSeedFromMnemonic } from '../utils/mnemonic';
-import { saveAccountInfoInLocalStorage } from '../utils/storage';
+import { saveAccountInfoInDEN, saveSpendingPassword } from '../utils/storage';
 
 import routes from '../constants/routes.json';
 
@@ -91,7 +91,8 @@ const initializeKeysAndRedirect = (
     ...keys
   });
   if (saveAccount) {
-    saveAccountInfoInLocalStorage(keys);
+    saveSpendingPassword('manteca');
+    saveAccountInfoInDEN('manteca', keys);
   }
 
   return Promise.all([

examples/wallet/app/actions/router.js

@@ -5,12 +5,12 @@ import type { Address } from '../models';
 import routes from '../constants/routes';
 import { setAccountFromPrivateKey } from './account';
 
-import { readAccountKeysFromLocalStorage } from '../utils/storage';
+import { readAccountKeysFromDEN } from '../utils/storage';
 
 // eslint-disable-next-line import/prefer-default-export
 export const redirectToFirstAppPage = () => {
   return (dispatch: Dispatch, getState: GetState) => {
-    const accountKeys = readAccountKeysFromLocalStorage();
+    const accountKeys = readAccountKeysFromDEN('manteca');
     if (accountKeys !== undefined) {
       return dispatch(setAccountFromPrivateKey(accountKeys.privateKey));
     }

examples/wallet/app/utils/storage.js

@@ -1,12 +1,14 @@
 // @flow
 import type { AccountKeys } from '../reducers/types';
-import type { Address, Identifier, PrivateKey } from '../models';
 import {
   computeBlake2bHexWithSecret,
-  isBlake2HashHexWithSecretOk
+  isBlake2HashHexWithSecretOk,
+  aesEncrypt,
+  aesDecrypt
 } from './decrypt';
 
 const WALLET_SPEDING_PASSWORD_KEY = 'wallet.spending.pwd';
+const WALLET_ENCRYPTED_KEYS = 'wallet.encrypted.account.info';
 
 export function saveSpendingPassword(spendingPassword: string): void {
   const spendingHash = computeBlake2bHexWithSecret(spendingPassword);
@@ -26,18 +28,25 @@ export function isSpedingPasswordCreated(): boolean {
   return false;
 }
 
-export function saveAccountInfoInLocalStorage(keys: AccountKeys): void {
-  Object.keys(keys).forEach(key => localStorage.setItem(key, keys[key]));
+export function saveAccountInfoInDEN(
+  spendingPassword: ?string,
+  keys: AccountKeys
+): void {
+  const plainTextAccountInfo = JSON.stringify(keys);
+  const spedingPwd: string = !spendingPassword ? '' : spendingPassword;
+  const encryptedTextAccountInfo = aesEncrypt(spedingPwd, plainTextAccountInfo);
+  localStorage.setItem(WALLET_ENCRYPTED_KEYS, encryptedTextAccountInfo);
 }
 
 // eslint-disable-next-line flowtype/space-after-type-colon
-export function readAccountKeysFromLocalStorage(): ?AccountKeys {
-  if (localStorage.getItem('privateKey')) {
-    return {
-      address: (localStorage.getItem('address'): Address),
-      identifier: (localStorage.getItem('identifier'): Identifier),
-      privateKey: (localStorage.getItem('privateKey'): PrivateKey)
-    };
+export function readAccountKeysFromDEN(
+  spendingPassword: ?string
+): ?AccountKeys {
+  const encryptedHex = localStorage.getItem(WALLET_ENCRYPTED_KEYS);
+  if (encryptedHex && encryptedHex.length > 0) {
+    const plainText = aesDecrypt(spendingPassword, encryptedHex);
+    const accountKeys = JSON.parse(plainText);
+    return accountKeys;
   }
   return undefined;
 }