Verifying physical universal serial bus keystrokes

Details Verifying physical universal serial bus keystrokes Verifying physical universal serial bus keystrokes

2005-11-22

2005-11-22

LaMarre, Guy (Department: 2131)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S152000

Reexamination Certificate

active

06968462

ABSTRACT:
A method and system for securing access to a keyboard driver in a host computer. The host computer includes a host processor that manages communication between a keyboard driver and a keyboard attached to the host computer. In accordance with a method of the present invention, a packet is received on a bus that connects the keyboard to the host processor. A determining is made of whether or not the packet originated from the keyboard. In response to determining that the packet originated from the keyboard, a independent bus traffic monitor processor sets an input secure bit which is then read by the host processor to selectively provide access to the keyboard driver in accordance with verification that the keyboard originated the packet.

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