# File lib/active_merchant/billing/integrations/gestpay/common.rb, line 20
          def parse_response(response)
            case response
            when /#cryptstring#(.*)#\/cryptstring#/, /#decryptstring#(.*)#\/decryptstring#/
              $1
            when /#error#(.*)#\/error#/
              raise StandardError, "An error occurred retrieving the encrypted string from GestPay: #{$1}"
            else
              raise StandardError, "No response was received by GestPay"
            end
          end