Apparatus and method for securing information entered upon an input device coupled to a universal serial bus

摘要: A computer system, bus interface unit and method are provided for securing passwords entered upon a USB input device, such as keyboard. The includes host controller coupled between on which the keyboard is configured another system memory operably connected. contains registers keep track of target endpoint addresses devices and, more specifically, address locations (i.e., an input/output range to-be-secured data) within those devices. Entry falls monitored, noted will signal to initiate management interrupt (SMI), execute SMI handler code attributed SMI. Data from secured (monitored) space placed data buffer eventually location memory.