SEARCHING SYSTEM FOR ENCRYPTED NUMERIC DATA AND SEARCHING METHOD THEREFOR

A system for searching encrypted numeric data and a method therefor are provided to efficiently search the encrypted data by making the wild card search and section search possible in a search method using a numerical value as a keyword. A key generating unit(100) produces a key for the encryption....

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Bibliographic Details
Main Authors HONG, DO WON, CHO, HYUN SOOK, PARK, TAE JUN
Format Patent
LanguageEnglish
Published 29.04.2009
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A system for searching encrypted numeric data and a method therefor are provided to efficiently search the encrypted data by making the wild card search and section search possible in a search method using a numerical value as a keyword. A key generating unit(100) produces a key for the encryption. An index generating unit(200) generates an index for a document from a plurality of documents including the generated key and numeric data based on each digit of the numeric data and the decimal points of each digit. A trapdoor generating unit(300) produces a trapdoor including search information for each digit of the numeric data and the decimal points of each digit by using the generated key. A document retrieval unit(400) receives numeric data to be searched, searches the index by using the trapdoor and then outputs document information including the numeric data.
Bibliography:Application Number: KR20070107106