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:
Dec. 18, 2012
Filed:
Feb. 13, 2009
Matthew G. Humphrey, Issaquah, WA (US);
Ashvin J. Mathew, Kirkland, WA (US);
Michael A. Wilde, Bothell, WA (US);
Costel Radu, Redmond, WA (US);
Matthew G. Humphrey, Issaquah, WA (US);
Ashvin J. Mathew, Kirkland, WA (US);
Michael A. Wilde, Bothell, WA (US);
Costel Radu, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A secure storage system secures information of a client by first encrypting the information with a first key to generate first-key encrypted data. The secure storage system then encrypts with a second key the first-key encrypted data and the first key to generate second-key encrypted data. The system provides the client with a first portion of the second-key encrypted data. The system stores a second portion of the second-key encrypted data and the second key. When the confidential information is needed, the client provides the first portion. The system retrieves the second portion. The system then decrypts with the second key the first portion and the second portion to generate the first-key encrypted data and the first key. The system then decrypts with the first key the first-key encrypted data to generate the unsecure confidential information.