Access to content addressable data over a network

Details Access to content addressable data over a network Access to content addressable data over a network

2005-12-07

2009-02-03

Smithers, Matthew (Department: 2137)

Information security

Prevention of unauthorized use of data including prevention...

Access control

C713S165000, C713S190000, C705S002000, C705S051000

Reexamination Certificate

active

07487551

ABSTRACT:
Access to content addressable data on a network is facilitated using digital information storing devices or data repositories (“silos”) that monitor broadcast data requests over the network. A number of silos automatically monitor both data requests and data itself that are broadcast over a network. The silos selectively store data. Each silo responds to data requests broadcast over the network with data the silo has previously intercepted. A content addressable file scheme is used to enable the data repositories to reliably identify data being requested. When a data request is received, each silo evaluates whether it has all or a portion of the data being requested and responds to requests when it has the data. Requests for data are implemented by broadcasting a cryptographic hash data identifier of the data file needed. The data identifier is used by a silo to determine which data to receive and store.

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