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, 2024
Filed:
Mar. 31, 2021
Western Digital Technologies, Inc., San Jose, CA (US);
Matthew Harris Klapman, San Jose, CA (US);
Sandisk Technologies, Inc., Milpitas, CA (US);
Abstract
This disclosure relates to data storage device (DSD) hardware and, more specifically, to systems and methods for encrypting data stored on a DSD. A DSD comprises a non-volatile storage medium to store multiple file system data objects using block addressing. The multiple file system data objects are addressable by respective ranges of blocks. A device controller is integrated with the DSD and comprises hardware circuitry configured to encrypt data to be stored on the storage medium and decrypt data stored on the storage medium based on different cryptographic keys, and to use each of the different cryptographic keys for one of the ranges of blocks addressing a respective file system data object. The decryption part of the hardware circuitry can be deactivated so that the data can be read in encrypted form.