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. 05, 2014
Filed:
Dec. 23, 2010
Helen Raizen, Jamaica Plain, MA (US);
Atul Kabra, New Delhi, IN;
Helen Raizen, Jamaica Plain, MA (US);
Atul Kabra, New Delhi, IN;
EMC Corporation, Hopkinton, MA (US);
Abstract
An encryption endpoint (EE) receives, via a storage I/O stack (having a key controller module (KCM)), encryption metadata identifying an encryption key and a set of region entries. Each region entry includes an identification of a region within a storage device subject to encryption with the encryption key and an identification of a correlation between the region and a corresponding region on a logical volume (LV) managed by the KCM. The EE receives, via the stack, a storage command to process a block having a first address on the storage device. It corresponds to a second address located within the corresponding region of the LV. The EE determines the second address within the LV and then cryptographically processes the block using an address-dependent cryptographic algorithm and (a) data of the block, (b) the determined second address, and (c) the encryption key.