The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2014
Filed:
Jan. 16, 2013
Microsoft Corporation, Redmond, WA (US);
Charles G. Jeffries, Sammamish, WA (US);
Vijay G. Bharadwaj, Redmond, WA (US);
Michael J. Grass, Sammamish, WA (US);
Matthew C. Setzer, Woodinville, WA (US);
Gaurav Sinha, Hyderabad, IN;
Carl M. Ellison, New York, NY (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A portable secure data file includes an encrypted data portion and a metadata portion. When a request associated with a current user of a device to access a portable secure data file is received, one or more records in the metadata portion are accessed to determine whether the current user is permitted to access the file data in the encrypted data portion. If a record indicates the user is permitted to access the file data, a content encryption key in that record is used to decrypt the encrypted data portion.