Add password setting and check password before deleting it

components/password-prompt.js

@@ -5,7 +5,7 @@ import { AppText } from './app-text'
 import { hasEncryptionObservable } from '../local-storage'
 import styles from '../styles'
 import { passwordPrompt } from './labels'
-import { openDbConnection, requestHash, deleteDbAndOpenNew } from '../db'
+import { openDbConnection, requestHash, deleteDbAndOpenNew, openDb } from '../db'
 import App from './app'
 
 export default class PasswordPrompt extends Component {
@@ -21,35 +21,27 @@ export default class PasswordPrompt extends Component {
       }
     })
 
-    this.tryToOpenDb = async (msg) => {
-      msg = JSON.parse(msg)
-      if (msg.type === 'sha512') {
-        const hash = msg.message
-        const key = new Uint8Array(64)
-        for (let i = 0; i < key.length; i++) {
-          const twoDigitHex = hash.slice(i * 2, i * 2 + 2)
-          key[i] = parseInt(twoDigitHex, 16)
-        }
-        try {
-          await openDbConnection(key)
-          this.setState({showApp: true})
-        } catch (err) {
-          console.log(err)
-          this.setState({ wrongPassword: true })
-        }
-      }
-    }
-
     nodejs.start('main.js')
     nodejs.channel.addListener(
       'message',
-      this.tryToOpenDb,
+      this.passHashToDb,
       this
     )
   }
 
+  passHashToDb = async msg => {
+    msg = JSON.parse(msg)
+    if (msg.type != 'sha512') return
+    try {
+      await openDb({hash: msg.message, persistConnection: true })
+      this.setState({ showApp: true })
+    } catch (err) {
+      this.setState({ wrongPassword: true })
+    }
+  }
+
   componentWillUnmount() {
-    nodejs.channel.removeListener('message', this.tryToOpenDb)
+    nodejs.channel.removeListener('message', this.passHashToDb)
   }
 
   render() {
@@ -71,7 +63,7 @@ export default class PasswordPrompt extends Component {
                 />
                 <TouchableOpacity
                   style={styles.settingsButton}
-                  onPress={async () => {
+                  onPress={() => {
                     requestHash(this.state.password)
                   }}
                 >