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. 10, 2014
Filed:
Jun. 30, 2011
Applicants:
Magnus Nyström, Sammamish, WA (US);
Alina Oprea, Waltham, MA (US);
Adam Back, Sliema, MT;
Inventors:
Assignee:
DECHO Corporation, Pleasant Grove, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A technique controls access to a file. The technique involves creating a file encryption key based on (i) a user input parameter (e.g., a user password) from a user of the client device and (ii) an automatically generated salt parameter (e.g., a random number). The technique further involves encrypting the file using the file encryption key to form an encrypted copy of the file, and providing the salt parameter to an external storage system to externally store the salt parameter. Access to data within the encrypted copy of the file requires the salt parameter provided to the external storage system.