Forced execution of authenticated code
US10171870B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Dec 29, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8173
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Described herein are systems and methods for providing hardware based security to software applications in a television receiver. The system can include a television receiver having a trusted hardware environment that includes a security processor and a standard environment that includes an application processor. The security processor can ensure that at least a portion of the software application executed by the application processor is secure. A portion of the software application code can be placed in an interrupt service routine memory space. During execution of the software application, the security processor can security check the portion of the software application in the interrupt service routine memory space, making it trusted code. The security processor can force the application processor to execute the trusted code by triggering an interrupt. Such forced execution can allow the security processor to not only ensure that code is trusted, but that it is executed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.