code: def generate_security_hash(self, content_type, object_pk, timestamp):
          
          info = (content_type, object_pk, timestamp)
          key_salt = "django.contrib.forms.CommentSecurityForm"
          value = "-".join(info)
          return salted_hmac(key_salt, value).hexdigest()
docs: Generate a HMAC security hash from the provided info.