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Personalized private information retrieval method based on data fitting

A privacy information and data fitting technology, applied in the field of personalized privacy information retrieval based on data fitting, can solve the problem of no effective solution, do not want to expose data, etc., and achieve the effect of good protection

Active Publication Date: 2017-06-30
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After entering the era of big data, all kinds of data are constantly merging, and major organizations have enough data, but when they want to query data through other organizations, they don't want to expose their data to the data provider, but for this There is currently no effective solution to this demand in the industry

Method used

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  • Personalized private information retrieval method based on data fitting

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Experimental program
Comparison scheme
Effect test

Embodiment

[0015] figure 1 It is a specific implementation flow chart of the personalized private information retrieval method based on data fitting in the present invention. Such as figure 1 As shown, the specific steps of the personalized private information retrieval method based on data fitting in the present invention include:

[0016] S101: Negotiation between buyers and sellers to retrieve the reference column:

[0017] The buyer and seller of the data trading platform negotiate to obtain the reference column R for retrieval, such as ID number, mobile phone number, etc. In this way, the retrieval reference column can be determined according to the buyer's own needs and the seller's data provision, thereby providing personalized information retrieval.

[0018] Table 1 is the buyer retrieval data table in this embodiment.

[0019] name Age PhoneNum Rich 11 15253592645 stick 33 18753597551 Roc 23 18625566432 Emily 12 15642592117 Alic...

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Abstract

The invention discloses a personalized private information retrieval method based on data fitting. A buyer of a data exchange platform and a seller of the data exchange platform negotiate and obtain a retrieval reference column, the buyer determines a distribution function of retrieval reference column data through fitting, according to the distribution function of the retrieval reference column data and private requirement parameters, k anonymous sets are obtained, an irreversible encryption algorithm is adopted to encrypt the anonymous sets, anonymous ciphertext sets are sent to the seller, the seller adopts the same irreversible encryption algorithm as the buyer adopts to encrypt data in a reference column R in a database of the seller, then, retrieval is conducted according to the anonymous ciphertext sets, retrieval record sets are sent to the buyer, the buyer screens out needed retrieval records in the retrieval record sets according to actual retrieval reference column data, and retrieval results are obtained. By the adoption of the method, the privacy of retrieval contents and intentions of the buyer can be well protected.

Description

technical field [0001] The invention belongs to the technical field of information retrieval in data transactions, and more specifically, relates to a personalized privacy information retrieval method based on data fitting. Background technique [0002] With the rapid development of network information technology, the demand for data in all walks of life continues to grow. Both in academia and industry hope to obtain data that can meet production and research, and data plays an increasingly important role in people's lives. more important role. Various industries, such as government departments, commercial organizations or research institutions, require a large amount of data input to meet various needs, but the data is complex and changeable. Therefore, various industries need to search for useful information from massive data to Meet your own needs. However, this may lead to the disclosure of the privacy of the individual query content and the commercial intention of the...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06F21/60
CPCG06F16/2457G06F21/602G06F21/606
Inventor 王晓玲赵大鹏李财政
Owner EAST CHINA NORMAL UNIVERSITY
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