Device side host integrity validation
US8806220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2009 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Jun 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a technology by which a transient storage device or secure execution environment-based (e.g., including an embedded processor) device validates a host computer system. The device compares hashes of host system data against valid hashes maintained in protected storage of the device. The host data may be a file, data block, and/or memory contents. The device takes action when the host system data does not match the information in protected storage, such as to log information about the mismatch and/or provide an indication of validation failure, e.g., via an LED and/or display screen output. Further, the comparison may be part of a boot process validation, and the action may prevent the boot process from continuing, or replace an invalid file. Alternatively, the validation may take place at anytime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.