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:
Aug. 06, 2013
Filed:
Mar. 26, 2011
Stefan Thom, Snohomish, WA (US);
Erik Lee Holt, Redmond, WA (US);
Shivaram H. Mysore, Kirkland, WA (US);
Valerie Kathleen Bays, Redmond, WA (US);
Carl M. Ellison, Seattle, WA (US);
Stefan Thom, Snohomish, WA (US);
Erik Lee Holt, Redmond, WA (US);
Shivaram H. Mysore, Kirkland, WA (US);
Valerie Kathleen Bays, Redmond, WA (US);
Carl M. Ellison, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Systems, methods, and technologies for configuring a conventional smart card and a client machine, and for performing a smart card authorization using the configured smart card and client. Further, the combination of methods provides for mutual authentication—authentication of the client to the user, and authentication of the user to the client. The authentication methods include presenting a specified token to the user sufficient to authenticate the client to the user and thus protect the user-provided PIN. Security is strengthened by using an integrity key based on approved client system configurations. Security is further strengthened by calculating a PIN' value based on a user-specified PIN and a modifier and using the PIN′ value for unlocking the smart card.