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:
Sep. 27, 2016
Filed:
Dec. 19, 2014
Protection of a secret on a mobile device using a secret-splitting technique with a fixed user share
Emc Corporation, Hopkinton, MA (US);
Salah Machani, Toronto, CA;
Nikolaos Triandopoulos, Arlington, MA (US);
Lawrence N. Friedman, Arlington, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A method includes (1) receiving, by a mobile computing device (MCD), user-specific data from a user, (2) processing (a) a user share of a cryptographic key, the user share being fixed based on the received user-specified data, and (b) a local share of the cryptographic key to recreate the cryptographic key, wherein the local share was created by applying a secret splitting algorithm to the cryptographic key and the user share to yield a set of non-fixed shares including the local share, the user share and the set of non-fixed shares making up a set of shares of the cryptographic key, the cryptographic key being recreatable from a strict subset of the set of shares, and (3) decrypting encrypted data stored on the MCD using the recreated cryptographic key, thereby providing access, using the decrypted encrypted data, to the resource.