Technology for hiding partial relation in data bank cryptogram index

The present invention belongs to the field of computer database and information safety technology and aims at hiding semi-order relation in fast inquiring cipher text fields. The technology of the present invention includes database index file recording only semi-order relation of the data item clea...

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Bibliographic Details
Main Author ZHIZHONG ZENG
Format Patent
LanguageEnglish
Published 24.01.2007
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The present invention belongs to the field of computer database and information safety technology and aims at hiding semi-order relation in fast inquiring cipher text fields. The technology of the present invention includes database index file recording only semi-order relation of the data item clear text through some conversion, converting the inquired clear text range into the operational result of the converted number range set during range inquiry, and locating data in the index based on the converted number magnitude during equivalent inquiry. The said technological scheme can hide the semi-order relation of data during establishing index of clear text index without affecting the inquiry speed significantly. The present invention may be used for the data management and maintenance with relatively high data safety requirement.
Bibliography:Application Number: CN20061107919