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:
Dec. 11, 2018
Filed:
Sep. 29, 2014
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Kedar Shrikrishna Patwardhan, Pune, IN;
Scott Ogata, Lake Forest, CA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A cloud storage system stores data objects from different customers. Each customer has their own encryption key to encrypt the data objects for storage and the key is not shared. To deduplicate the data objects, a set of base fingerprints associated with a set of base data objects is stored. A first fingerprint associated with a data object from a customer is compared with a base fingerprint. The first and base fingerprints are generated by applying an identical fingerprinting algorithm to unencrypted versions of the data objects. If the fingerprints match, the first fingerprint is associated with a base data object corresponding to the matching base fingerprint, and the data object from the customer is not stored. If the fingerprints do not match, the data object from the customer is stored.