Multi-search supporting design method for encrypted database middleware

A design method and database technology, applied in the field of information security, can solve problems such as data leakage, privacy security concerns, and inability to support querying of database aggregation functions, so as to ensure consistency and improve security.

A design method and database technology, applied in the field of information security, can solve problems such as data leakage, privacy security concerns, and inability to support querying of database aggregation functions, so as to ensure consistency and improve security.

CN104881280AActive Publication Date: 2015-09-02NANJING UNIV OF POSTS & TELECOMM
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  • Multi-search supporting design method for encrypted database middleware
  • Multi-search supporting design method for encrypted database middleware
  • Multi-search supporting design method for encrypted database middleware

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Experimental program
Comparison scheme
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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the present invention is described in further detail.

[0025] 1. Architecture

[0026] Such as figure 1 As shown, the middleware system of the present invention is built between the client and the database, the original SQL statement of the client is received by the multi-query middleware system, and the database is realized by rewriting the SQL statement on the basis of establishing a ciphertext data dictionary. Data encryption and relational schema anonymization. The system can receive the query results of encrypted data in the database, and decrypt the ciphertext data through the established ciphertext data dictionary, so that the client can obtain usable plaintext data. This architecture can realize the transparency of the client to the database, only needs the client to use the standard SQL statement, and does not modify the original structure of the database, and can realize the query of the ciphertext data of the...

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Abstract

The invention discloses a multi-search supporting design method for an encrypted database middleware, and aims at encrypting data and anonymizing a data relation mode so as to protect the safety of data stored in a relation database under a cloud environment with database outsourcing service, as well as preventing data privacy from being pried and disclosed by a cloud service supplier on the premise that the availability of the data is ensured. The method mainly comprises the steps of enabling correspondence of the data encrypting storing type and search type; building a local data dictionary; rewriting SQL statements. The method can support encrypted data storage by a plurality of modes, anonymizing of the relation mode, and various modes of searching the encrypted data dictionary and encrypted data. The method is easy to carry out, high in safety and high in efficiency, supports equivalent search, range search, aggregate search, Top-k search and other search modes, is free of modification on database software, and widely supports various commercial relation databases.

Description

technical field [0001] The invention relates to a design method of a ciphertext database middleware supporting multiple queries, and belongs to the technical field of information security. Background technique [0002] As a new network computing model, cloud computing provides users with on-demand IT services (ie computing, storage and applications, etc.) in a more economical way than traditional IT services. Because the development concept of cloud computing is in line with the current general trend of low-carbon economy and green computing, it has been vigorously advocated and promoted by governments and enterprises all over the world, bringing about tremendous changes in the computing and business fields. [0003] However, in the cloud computing services that have been implemented, privacy security issues have always been worrying, and have become one of the main factors hindering the development and promotion of cloud computing. The user's private data includes informat...

Claims

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Application Information

Patent Timeline
02 Sep 2015
Publication
CN104881280A
IPC
G06F9/44; G06F17/30
Inventors
戴华; ηŽ‹η£Š