US Patent 8401185 Systems and methods for securely deduplicating data owned by multiple entities

A computer-implemented method for securely deduplicating data owned by multiple entities may include identifying a plurality of data segments to store on a third-party storage system and, for each data segment: 1) identifying a hash of the data segment, 2) transmitting the hash of the data segment to a central server, 3) receiving an encrypted string that is based on the hash of the data segment from the central server, 4) encrypting the data segment with the encrypted string, and 5) transferring the encrypted data segment to the third-party storage system. Various other methods, systems, and computer-readable media are also disclosed.