Protected computing environment

US9189605B2 · kind B2 · utility

Assignee

• MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

• Sumedh N. Barde · Redmond, US
• Jonathan Schwartz · Seattle, US
• Reid Kuhn · Seattle, US
• Alexandre V. Grigorovitch · Woodinville, US
• Kirt Debique · Seattle, US
• Chadd B. Knowlton · Bellevue, US
• James M. Alkove · Woodinville, US
• Geoffrey Dunbar · Kirkland, US
• Michael Grier · Woodinville, US
• Ming Ma · 红钢城街道, CN
• Chaitanya D. Upadhyay · Kirkland, US
• Adil Sherwani · Oakland, US
• Arun U. Kishan · Kirkland, US

Key dates

• Filing date: Feb 23, 2009
• Grant date: Nov 17, 2015
• Expiry date: May 2, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2209/603
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method of establishing a protected environment within a computing device including validating a kernel component loaded into a kernel of the computing device, establishing a security state for the kernel based on the validation, creating a secure process and loading a software component into the secure process, periodically checking the security state of the kernel, and notifying the secure process when the security state of the kernel has changed.