Method and apparatus for deterring a timing-based glitch attack during a secure boot process

Disclosed is a method for deterring a timing-based glitch attack during a secure boot process of a device having a device-specific number. In the method, the device generates a pseudorandom number specific to a particular execution of a secure boot process. The device combines the device-specific number and the pseudorandom number to generate a diversity value. The device may change a timing of at least one process step of the secure boot process based on the diversity value. Also, the device may change an order of process steps of the secure boot process based on the diversity value.