Data repository and method for promoting network storage of data
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United States of America Patent
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Aug 12, 2008
Grant Date -
Mar 28, 2002
app pub date -
Feb 16, 2001
filing date -
Feb 18, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.
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