Configurable signature for authenticating data or program code
US8006095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2007 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Nov 27, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3247
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
System and method for authenticating data or program code via a configurable signature. Configuration information is retrieved from a protected first memory, e.g., an on-chip register, where the configuration information specifies a plurality of non-contiguous memory locations that store the signature, e.g., in an on-chip memory trailer. The signature is retrieved from the plurality of non-contiguous memory locations based on the configuration information, where the signature is useable to verify security for a system. The signature corresponds to specified data and/or program code stored in a second memory, e.g., in off-chip ROM. The specified data and/or program code may be copied from the second memory to a third memory, and a signature for the specified data and/or program code calculated based on the configuration information. The calculated signature may be compared with the retrieved signature to verify the specified data and/or program code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.