Method and apparatus for verifying authenticity of initial boot code
US8250374B2 · kind B2 · utility
4Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2010 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Aug 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/72
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described herein is an alteration of the normal reset sequence of a programmable microprocessor to perform a cryptographic verification of a block of memory before executing any instructions from the memory. A programmable processor initializes its state, then computes and verifies a hash of a boot code region of memory before executing any user instructions in the memory. Systems using similar processors, and software to control such a processor's operation, are also described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.