System and method for high performance secure access to a trusted platform module on a hardware virtualization platform
US8090919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Jan 3, 2012 |
| Priority date | — |
| Expiry date | Jun 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2153
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for high performance secure access to a trusted platform module on a hardware virtualization platform. The virtualization platform including Virtual Machine Monitor (VMM) managed components coupled to the VMM. One of the VMM managed components is a TPM (Trusted Platform Module). The virtualization platform also includes a plurality of Virtual Machines (VMs). Each of the virtual machines includes a guest Operating System (OS), a TPM device driver (TDD), and at least one security application. The VMM creates an intra-partition in memory for each TDD such that other code and information at a same or higher privilege level in the VM cannot access the memory contents of the TDD. The VMM also maps access only from the TDD to a TPM register space specifically designated for the VM requesting access. Contents of the TPM requested by the TDD are stored in an exclusively VMM-managed protected page table that provides hardware-based memory isolation for the TDD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.