Generate RSA keypairs when the client starts

www/index.html

@@ -7,6 +7,7 @@
     <script src="UnitJS/dom.js"></script>
     <script src="translations.js"></script>
     <script src="i18n.js"></script>
+    <script src="lib/jsencrypt.min.js"></script>
     <script src="fun.js"></script>
     <script src="screen.js"></script>
     <script src="messaging.js"></script>

www/session.js

@@ -1,6 +1,7 @@
 function Session(modules) {
   var key = null;
   var name = null;
+  var keys = JSON.parse(localStorage.getItem('keys')) || generateKeyPair();
 
   modules.messaging.addEventListener(["Welcome"], function(o) {
     key = o.key;
@@ -29,4 +30,13 @@ function Session(modules) {
   function loggedIn() {
     return name != undefined;
   }
+
+  function generateKeyPair() {
+    var crypt = new JSEncrypt({default_key_size: 1024});
+    crypt.getKey();
+    return {
+      priv: crypt.getPrivateKey(),
+      pub: crypt.getPublicKey()
+    };
+  }
 }