Integrated data deduplication and encryption

US9495552B2 · kind B2 · utility

Assignee

• MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

• Ahmed El-Shimi · Seattle, US
• Paul Adrian Oltean · Redmond, US
• Ran Kalach · Bellevue, US
• Sudipta Sengupta · Sammamish, US
• Jin Li · Sammamish, US
• Roy Peter D'Souza · Bellevue, US
• Omkant Pandey · Seattle, US
• Ramarathnam Venkatesan · Redmond, US

Key dates

• Filing date: Dec 31, 2012
• Grant date: Nov 15, 2016
• Expiry date: Feb 8, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2221/2107
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

The subject disclosure is directed towards encryption and deduplication integration between computing devices and a network resource. Files are partitioned into data blocks and deduplicated via removal of duplicate data blocks. Using multiple cryptographic keys, each data block is encrypted and stored at the network resource but can only be decrypted by an authorized user, such as domain entity having an appropriate deduplication domain-based cryptographic key. Another cryptographic key referred to as a content-derived cryptographic key ensures that duplicate data blocks encrypt to substantially equivalent encrypted data.