The Farsite distributed file system provides availability by replicating each file onto multiple
desktop computers. Since this replication consumes significant storage space, it is important …

(Continued) veri? cation value is formed by hashing the associated encrypted block using a
one-Way hash function. The? le format supports veri? cation of individual? le blocks Without …

BACKGROUND File systems manage files and other data objects stored on computer
systems. File systems were originally built into a computer's operating system to facilitate …

US PATENT DOCUMENTS Written over a recent interval, computes a hash of the list, and
signs the hash. This signed list of hash values is known as a 5,317,728 A 5/1994 Tevis et a1 …

(54) LOCATING POTENTIALLY IDENTICAL 5,991,414 A 11/1999 Garay et al. OBJECTS
ACROSS MULTIPLE COMPUTERS 5,991,771 A 11/1999 Falls et al. BASED ON …

(52) US Cl....................................................... 713/165 user's key as the encryption key. The
verification value is (58) Field of Classification Search.................. 713/165 formed by hashing …

US PATENT DOCUMENTS 6,718,360 B1 4/2004 Jones et al. 6,721,880 B1 4/2004 Pike
5,317,728 A 5, 1994 Tevis et al. 6,725,373 B2 4/2004 Carbajal et al. 5,371,794. A 12, 1994 …

With the development of Internet of things (IoT), billions of sensors, actuators and other
intelligent terminal devices (ITDs) are connected to the Internet. In this situation, traditional …

(57) ABSTRACT A file that has been encrypted using a Symmetric key and that has a
corresponding acceSS control entry with the Symmetric key encrypted using the public key …

Farsite is a secure, scalable, distributed file system that logically functions as a centralized
file server but that is physically realized on a set of client desktop computers. Farsite …