feat: resolved PR comments.

Signed-off-by: Gaurav Goel <[email protected]>

Author: grvgoel81

Assets/Plugins/Web3AuthSDK/Web3Auth.cs

@@ -374,12 +374,14 @@ public void setResultUrl(Uri uri)
             throw new UserCancelledException();
 #endif
         hash = hash.Remove(0, 1);
-        Dictionary<string, string> queryParameters = Utils.ParseQuery(uri.Query);
 
+        Dictionary<string, string> queryParameters = Utils.ParseQuery(uri.Query);
         if (queryParameters.Keys.Contains("error"))
             throw new UnKnownException(queryParameters["error"]);
 
-        string b64Params = hash.Split('=')[1];
+        string newUriString = "http://" + uri.Host + "?" + hash;
+        Uri newUri = new Uri(newUriString);
+        string b64Params = getQueryParamValue(newUri, "b64Params");
         string decodedString = decodeBase64Params(b64Params);
         SessionResponse sessionResponse = null;
         try
@@ -404,6 +406,25 @@ public void setResultUrl(Uri uri)
 #endif
     }
 
+    private string getQueryParamValue(Uri uri, string key)
+    {
+        string value = "";
+        if (uri.Query != null && uri.Query.Length > 0)
+        {
+            string[] queryParameters = uri.Query.Substring(1).Split('&');
+            foreach (string queryParameter in queryParameters)
+            {
+                string[] keyValue = queryParameter.Split('=');
+                if (keyValue[0] == key)
+                {
+                    value = keyValue[1];
+                    break;
+                }
+            }
+        }
+        return value;
+    }
+
     private string decodeBase64Params(string base64Params)
     {
         if(string.IsNullOrEmpty(base64Params))