Utils: Add a basic implementation of an EncryptionManager which allows to store the password encrypted.
This use the latest AndroidKeyStore from Android M and allow to store the key securely.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:padding="8dp">
<ListView android:id="@id/android:list" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_weight="1"
android:drawSelectorOnTop="false"
android:focusable="true"/>
<TextView android:id="@id/android:empty" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:text="@string/privacy_list_no_data"
android:focusable="true"/>
</LinearLayout>