Method and apparatus for securely entering trusted execution environment in hyper- threading scenario
US11392405B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2021 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Jun 23, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One or more implementations of the present specification provide a method and apparatus for securely entering a trusted execution environment in a hyper-threading scenario. The method can include: in response to that a logical processor running on a physical processor core generates a trusted execution environment entry event through an approach provided by a virtual machine monitor, labeling the logical processor with a state of expecting to enter a trusted execution environment; and in response to determining that all logical processors corresponding to the physical processor core are labeled with the state of expecting to enter a trusted execution environment, separately controlling each one of the logical processors to enter a trusted execution environment built on the physical processor core. In either a privacy blockchain scenario or other privacy protection scenarios, the solution above can allow the hyper-threading technology to be enabled to improve computing efficiency while ensuring that a trusted application exclusively occupies a physical processor core to avoid a risk of privacy leakage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.