Method for indexing encrypted column
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United States of America Patent
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Oct 2, 2012
Grant Date -
Jul 1, 2010
app pub date -
Sep 28, 2007
filing date -
Oct 4, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a method of creating indexes so that an index scan can be worked for columns in a database encrypted by means of secrete key cipher algorithm. The method of creating indexes according to the present invention comprises the steps of: re-encrypting to be able to maintain the sort ordering based on a plain text; creating new indexes based on the re-encrypted data; and configuring domain index architecture of encrypted columns so that the created index is used for the index scan in a query statement.
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