Methods, apparatus and system for authenticating a programmable hardware device and for authenticating commands received in the programmable hardware device from a secure processor
US9003197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2008 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Nov 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2129
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, device and system for authenticating a programmable hardware device, such as a programmable hardware chip, and a command received by the programmable hardware device. A secure processor or other trusted source authenticates the programmable hardware chip by verifying, with the secure processor's own verification key, a random number sent to the programmable hardware chip and encrypted using a verification key embedded within the programmable hardware chip, since the nature of the encryption is such that only the original logic function that includes the verification key can encrypt the data correctly. A command received by the programmable hardware chip is authenticated by verifying that a command authentication token received by the programmable hardware chip is generated using the correct command authentication key and consequently verifying that the command is received from the secure processor, as only the party who has the command authentication key can encrypt the data correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.