System and method for validating program execution at run-time using control flow signatures
US8782435B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2011 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Apr 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/6026
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processor comprising: an instruction processing pipeline, configured to receive a sequence of instructions for execution, said sequence comprising at least one instruction including a flow control instruction which terminates the sequence; a hash generator, configured to generate a hash associated with execution of the sequence of instructions; a memory configured to securely receive a reference signature corresponding to a hash of a verified corresponding sequence of instructions; verification logic configured to determine a correspondence between the hash and the reference signature; and authorization logic configured to selectively produce a signal, in dependence on a degree of correspondence of the hash with the reference signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.