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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.:

US 8315394 B1

PDFFull Text
Date of Patent:
Nov. 20, 2012

Filed:

Oct. 24, 2007

Techniques for encrypting data on storage devices using an intermediate key

Applicants:

Marco Sanvido, Belmont, CA (US);

Anand Krishnamurthi Kulkarni, San Jose, CA (US);

Cyril Guyot, San Jose, CA (US);

Richard M. H. New, San Jose, CA (US);

Jorge Campello DE Souza, Cupertino, CA (US);

Inventors:

Marco Sanvido, Belmont, CA (US);

Anand Krishnamurthi Kulkarni, San Jose, CA (US);

Cyril Guyot, San Jose, CA (US);

Richard M. H. New, San Jose, CA (US);

Jorge Campello de Souza, Cupertino, CA (US);

Assignee:

Hitachi Global Storage Technologies Netherlands, B.V., Amsterdam, NL;

Attorney:

Steven J. Cahill

Primary Examiner:

Kambiz Zand

Assistant Examiner:

Imhotep Durham

Int. Cl.
CPC ...
G06F 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A data storage device encrypts data stored in non-volatile memory using a bulk encryption key. The data storage device uses a key derivation function to generate an initial encryption key. The data storage device then wraps an intermediate encryption key with the initial encryption key and stores the wrapped intermediate key in the non-volatile memory. The data storage device wraps the bulk encryption key with the intermediate encryption key and stores the wrapped bulk encryption key in the non-volatile memory. The data storage device can unwrap the wrapped intermediate key to generate the intermediate encryption key using the initial encryption key. The data storage device can unwrap the wrapped bulk encryption key to generate the bulk encryption key using the intermediate encryption key. The data storage device decrypts data stored in the non-volatile memory using the bulk encryption key.

Find Patent Forward Citations

Sanvido, Marco. (2012). Techniques for encrypting data on storage devices using an intermediate key (U.S. Patent No. 8315394). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8315394

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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