Use a worker to facilitate key generation

libtextsecure/account_manager.js

@@ -79,7 +79,6 @@
             });
         }
     };
-
     function createAccount(number, verificationCode, identityKeyPair, single_device) {
         textsecure.storage.put('identityKey', identityKeyPair);
 
@@ -119,6 +118,8 @@ function generateKeys(count, progressCallback) {
         throw new Error('Invalid signedKeyId');
     }
 
+    textsecure.protocol_wrapper.startWorker();
+
     var store = textsecure.storage.axolotl;
     var identityKey = store.getMyIdentityKey();
     var result = { preKeys: [], identityKey: identityKey.pubKey };
@@ -152,6 +153,7 @@ function generateKeys(count, progressCallback) {
     textsecure.storage.put('maxPreKeyId', startId + count);
     textsecure.storage.put('signedKeyId', signedKeyId + 1);
     return Promise.all(promises).then(function() {
+        textsecure.protocol_wrapper.stopWorker();
         return result;
     });
 }

libtextsecure/axolotl_wrapper.js

@@ -55,14 +55,11 @@
         encryptMessageFor: function(deviceObject, pushMessageContent) {
             return axolotlInstance.encryptMessageFor(deviceObject, pushMessageContent);
         },
-        generateKeys: function(count, progressCallback) {
-            if (textsecure.worker_path) {
-                axolotlInstance.startWorker(textsecure.worker_path);
-            }
-            return generateKeys(count, progressCallback).then(function(result) {
-                axolotlInstance.stopWorker();
-                return result;
-            });
+        startWorker: function() {
+            axolotlInstance.startWorker('/js/libaxolotl-worker.js');
+        },
+        stopWorker: function() {
+            axolotlInstance.stopWorker();
         },
         createIdentityKeyRecvSocket: function() {
             return axolotlInstance.createIdentityKeyRecvSocket();