Private information retrieval
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United States of America Patent
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-
Dec 29, 1998
Grant Date -
N/A
app pub date -
Oct 18, 1996
filing date -
Oct 20, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method for retrieving data from a database, while assuring privacy, which comprises providing a database address for the data sought to be retrieved, generating at least two messages and communicating them to two or more database copies, generating two replies from the database copies, wherein one or more of said messages depends on the database address, a pseudo random or random number and wherein each reply depends on the message transmitted to the specific database copy, and the retrieved data is calculated as a function of said replies.
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