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:
Oct. 27, 2015
Filed:
May. 24, 2013
Symantec Corporation, Mountain View, CA (US);
Sambit Dash, Bangalore, IN;
Ramanath Pai, Bangalore, IN;
Symantec Corporation, Mountain View, CA (US);
Abstract
Techniques are disclosed for protecting cryptographic secrets stored locally in a device, such as a mobile phone. A client device creates or downloads a shared secret to be used in a server transaction. To protect this shared secret locally, the client device encrypts the shared secret using a key generated a file system attributes value, along with other sources of entropy. The file system attributes value may correspond to the inode of a file in a UNIX-based file system. Thereafter, when the shared secret is required for logical computation, the client device reconstructs the key using the file system attributes value and the other previous sources of entropy. The client device may use the key to decrypt the information and use the shared secret for its required purpose, e.g., in generating a one-time password for a login session.