System and method for a distributed and flexible configuration of a TCG TPM-based local verifier
View Patent ↗An improved system and method for efficiently implementing a remotely manageable secure boot on a Trusted Computing Group defined Trusted Platform Module. Various embodiments of the present invention enable a boot process which does not require a dependency on prior RIM certificates, while still requiring a dependency on the sequencing of the boot process.
1. A method comprising:
checking, as part of a secure boot process, a first register for a pre-requisite state before loading a component;
if the pre-requisite state exists in the first register, loading the component;
updating a second register with a hash value of an image of the component; and
updating the first register to indicate that the component has been loaded,
where the first and second registers comprise platform configuration registers (PCRs), where the updating of the first and second registers is performed via an extension process, and where the first register is extendible only by using a valid reference integrity metric (RIM) certificate.
2. The method of claim 1 , wherein the extension process comprises a SHA1 algorithm.
3. The method of claim 1 , wherein the boot process is remotely manageable.
4. The method of claim 3 , wherein the boot process is interoperable with a trusted platform module (TPM).
5. A computer program product comprising:
a nontransitory computer-readable medium having the product embodied therein and also having a memory, said product being configured to load a component in a secure boot process;
computer code for checking a first register for a pre-requisite state before loading the component;
computer code for, if the pre-requisite state exists in the first register, loading the component;
computer code for updating a second register with a hash value of an image of the component; and
computer code for updating the first register to indicate that the component has been loaded;
where the first and second registers comprise platform configuration registers (PCRs), where the updating of the first and second registers are performed via an extension process, and where the first register is extendible only by using a valid reference integrity metric (RIM) certificate.
6. The computer program product of claim 5 , wherein the extension process comprises a SHA1 algorithm.
7. The computer program product of claim 5 , wherein the boot process is remotely manageable.
8. The computer program product of claim 7 , wherein the boot process is interoperable with a trusted platform module (TPM).
9. An apparatus, comprising:
a processor; and
a memory unit being communicatively connected to the processor and including a program for loading a component in a secure boot process, said program having computer code for checking a first register for a pre-requisite state before loading the component;
computer code for, if the pre-requisite state exists in the first register, loading the component;
computer code for updating a second register with a hash value of an image of the component; and
computer code for updating the first register to indicate that the component has been loaded, where the first and second registers comprise platform configuration registers (PCRs), where the updating of the first and second registers are performed via an extension process, and where the first register is extendible only by using a valid reference integrity metric (RIM) certificate.
10. The apparatus of claim 9 , wherein the extension process comprises a SHA1 algorithm.
11. The apparatus of claim 9 , wherein the boot process is remotely manageable.
12. The apparatus of claim 11 , wherein the boot process is interoperable with a trusted platform module (TPM).