Microsoft Technology Licensing, LLC

Dylan D'Silva

David Michael Callaghan

Ravisankar V Pudipeddi

Sachin C Patel

Geir Olsen

JianMing M Zhou

John Michael Sheehan

Peter W Wieland

Peter J Torr

Benjamin Scott McGregor

Kumar Rajeev

Yifan Wang

Matthew Gonzalez

Jianming Zhou

Various systems and methods for capability access management are disclosed herein. In one example, a system includes a memory and a processor to send a signed custom capability description (SCCD) received from a first vendor to the memory for storage. The system may send an application received from a second vendor to the memory for storage. The system attempts to match the application to an authorization listing of the SCCD, where the application can be modified to allow access to a previously inaccessible custom capability in response to the application matching the authorization listing of the SCCD.

Capability access management

Applications are stored on removable storage of a mobile device in an encrypted form to provide isolation and piracy protection. In one implementation, each application is encrypted using its own associated encryption key that is generated based on an identifier of the application and a master key that is associated with a trusted platform module of the mobile device. In another implementation, each application is encrypted using two associated encryption keys. One key is used to encrypt binary data associated with the application such as source code, and the other key is used to encrypt application data such as graphics and configuration files. The encryption keys are each generated using the identifier of the application, the master key, and identifiers of the folders where the corresponding data types are stored on the mobile device. The removable storage includes SD cards formatted using the FAT or exFAT file systems.

Content item encryption on mobile devices

Growing community of inventors

Bellevue, WA, United States of America

Dylan D'Silva