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:
Jun. 03, 2014
Filed:
Jun. 21, 2010
Octavian T. Ureche, Renton, WA (US);
Nils Dussart, Kenmore, WA (US);
Charles G. Jeffries, Sammamish, WA (US);
Cristian M. Ilac, Sammamish, WA (US);
Vijay G. Bharadwaj, Sammamish, WA (US);
Innokentiy Basmov, Redmond, WA (US);
Stefan Thom, Snohomish, WA (US);
Son Voba, Sammamish, WA (US);
Octavian T. Ureche, Renton, WA (US);
Nils Dussart, Kenmore, WA (US);
Charles G. Jeffries, Sammamish, WA (US);
Cristian M. Ilac, Sammamish, WA (US);
Vijay G. Bharadwaj, Sammamish, WA (US);
Innokentiy Basmov, Redmond, WA (US);
Stefan Thom, Snohomish, WA (US);
Son VoBa, Sammamish, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Single-use authentication methods for accessing encrypted data stored on a protected volume of a computer are described, wherein access to the encrypted data involves decrypting a key protector stored on the computer that holds a volume-specific cryptographic key needed to decrypt the protected volume. Such single-use authentication methods rely on the provision of a key protector that can only be used once and/or that requires a new access credential for each use. In certain embodiments, a challenge-response process is also used as part of the authentication method to tie the issuance of a key protector and/or access credential to particular pieces of information that can uniquely identify a user.