Abstract: Various embodiments for protecting keyboard data inputted by a user in a computer having a keyboard hardware are disclosed. According to one exemplary embodiment, a method for protecting keyboard data, where the keyboard hardware comprises an I/O port having an input buffer and an output buffer, includes: receiving scan code data based on keyboard data inputted by the user, wherein the scan code data are latched in the output buffer of the I/O port; executing an interrupt routine to fetch the scan code data from the output buffer to a CPU of the computer, wherein the latched scan code data remains in the output buffer after the latched scan code data are read from the output buffer; transmitting a control command to the keyboard hardware through the input buffer of the I/O port; and receiving from the keyboard hardware a response signal generated in response to the control command, wherein the keyboard hardware is configured to transmit the response signal to the output buffer of the I/O port.

Abstract: Various embodiments for protecting keyboard data inputted by a user in a computer having a keyboard hardware are disclosed. According to one exemplary embodiment, a method for protecting keyboard data, where the keyboard hardware comprises an I/O port having an input buffer and an output buffer, includes: receiving scan code data based on keyboard data inputted by the user, wherein the scan code data are latched in the output buffer of the I/O port; executing an interrupt routine to fetch the scan code data from the output buffer to a CPU of the computer, wherein the latched scan code data remains in the output buffer after the latched scan code data are read from the output buffer; transmitting a control command to the keyboard hardware through the input buffer of the I/O port; and receiving from the keyboard hardware a response signal generated in response to the control command, wherein the keyboard hardware is configured to transmit the response signal to the output buffer of the I/O port.

Abstract: A security program has an ActiveX format for web browsers and application programs, and comprises a software security input window for preventing leakage of keyboard data without an additional hardware device but rather by using a conventional keyboard. Therefore, the present invention protects keyboard data on the web browsers or application programs.