PC SECURITY USING BIOS/(U)EFI EXTENSIONS

摘要

The invention relates to a method for controlling access to the BIOS/(U)EFI or sub-functions of the BIOS of a vending machine. The password of the BIOS is calculated using a deterministic algorithm into which code generation information which changes over time is incorporated. The method has the following steps: - displaying the code generation information which changes over time on a screen of the vending machine when the BIOS of the vending machine is accessed; - inputting the code generation information into a program on a second computer, which likewise has the deterministic algorithm for calculating the password for the BIOS, and calculating and displaying the password on the second computer; and - inputting the password on the vending machine and checking the password using the deterministic algorithm in order to allow access to the BIOS if the password is correct.