Patent ID: 6216230
Filing Date: 2001-04-10
Classification: G06F,G06Q

Abstract:
A multi-level security system to prevent unauthorized use of a computer, said system comprising,a program resident on said computer and implementing a user-validation procedure;a key device carrying a first serial number and an encryption key;means for storing in said computer a second serial number, said second serial number being the serial number of a device internal to said computer;a mass storage device installed in said computer and storing a validation record; said validation record comprising an unencrypted portion and an encrypted portion, said unencrypted portion including a copy of said first serial number and said encrypted portion including a copy of said second serial number and a user personal identification number;means for interfacing said key device to said computer; andmeans for reading said first serial number and said encryption key from said key device in order to gain authorized use of said computer;means for removing said key device from said computer after authorized use of said computer has been gained, and during operation of said computer.