Add set secret key api

src/android/CordovaAdalPlugin.java

@@ -132,6 +132,9 @@ public boolean execute(String action, JSONArray args, final CallbackContext call
 
             boolean useBroker = args.getBoolean(0);
             return setUseBroker(useBroker);
+        } else if (action.equals("setSecretKey")) {
+            String key = args.getString(0);
+            return setSecretKey(key);
         }
 
         return false;
@@ -276,6 +279,19 @@ private boolean setUseBroker(boolean useBroker) {
         return true;
     }
 
+    private boolean setSecretKey(String key) {
+            try {
+                SecretKey secretKey = this.createSecretKey(key);
+                AuthenticationSettings.INSTANCE.setSecretKey(secretKey.getEncoded());
+                callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK));
+            } catch (Exception e) {
+                Log.w("CordovaAdalPlugin", "Unable to create secret: " + e.getMessage());
+                callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.ERROR, e.getMessage()));
+            }
+
+            return true;
+    }
+
     private void requestBrokerPermissions() {
 
         // USE_CREDENTIALS and MANAGE_ACOUNTS are deprecated and not required

www/AuthenticationSettings.js

@@ -22,5 +22,21 @@ module.exports = {
         checkArgs('*', 'AuthenticationSettings.setUseBroker', arguments);
 
         return bridge.executeNativeMethod('setUseBroker', [!!useBroker]);
+    },
+
+
+    /**
+     * Sets flag to use or skip authentication broker.
+     * By default, the secret key is generated inside the library
+     *
+     * @param   {String}   key         Key to use to generate encryption bytes
+     *
+     * @returns {Promise}  Promise either fulfilled or rejected with error
+     */
+    setSecretKey: function(secretKey) {
+
+        checkArgs('*', 'AuthenticationSettings.setSecretKey', arguments);
+
+        return bridge.executeNativeMethod('setSecretKey', [secretKey]);
     }
 }