Patent ID: 7412596

Claim:
A Trusted-Computing Group (TCG) compliant computer system comprising: a trusted platform module (TPM) with a plurality of platform configuration registers (PCRs); Core Root of Trust for Measurement (CRTM) logic that, during a pre-boot phase following an initial powered on of the computer system, automatically generates a normal boot log of system parameters; attestation logic associated with the CRTM logic that appends a current TPM tick count to said normal boot log, and signs said normal boot log with a verification signature; and a hard disk that is utilized for storing boot control parameters utilized when the computer system is awaken from an S4 hibernation state; S4 logic for placing said computer system in an S4 hibernation state, wherein the boot control parameters are stored on said hard disk as a S4 boot log to be utilized during a later wake up from S4 state; verification logic that dynamically authenticates that an S4 boot log returned from the hard disk during a wake up from the S4 hibernation state is trustworthy; and a basic input/output system (BIOS) that controls a boot process for the computer system and, when the S4 boot log is authenticated, confirms that the values stored within the S4 boot log is the same as the values of the normal boot log that is automatically generated; wherein, the computer system is allowed to become operational from the S4 state only when the boot log is authenticated as trustworthy and the BIOS confirms the values of the S4 boot log are the same as values of the normal boot log.