Service provider reputation-based query verification method for data outsourcing scene

A service provider and data outsourcing technology, applied in the field of query and verification based on service provider reputation, to reduce the use of VO, improve efficiency, and ensure safety and reliability.

Active Publication Date: 2017-10-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of the verifiable object VO is usually much larger than the size of the query result, which will cause the verifiable object VO to become the main communication overhead in the verifiable query

Method used

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  • Service provider reputation-based query verification method for data outsourcing scene
  • Service provider reputation-based query verification method for data outsourcing scene
  • Service provider reputation-based query verification method for data outsourcing scene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The service provider implements the present invention to provide the query verification service to the user:

[0090] S11: The service provider SP receives and stores the signed optional data stream ADS issued by the data owner DO; and the service provider SP receives the multi-user query request PMUSQ;

[0091] S12: The service provider SP performs PMUSQ query processing and generates a verifiable object VO;

[0092] S13: the service provider SP returns the query result set R to the user;

[0093] S14: The service provider SP receives the request sequence RS sent by the user i ;

[0094] S15: The service provider SP receives the request sequence RS i , and then selectively return the corresponding verifiable VO to the user, so that the user can verify according to the returned VO, control the number of VO returns, reduce computing overhead, and reduce transmission overhead.

Embodiment 2

[0096] Location-based application development manufacturers implement the present invention, and they develop application service programs related to query verification. These application programs may be in the development phase, or in the testing phase, or in the use phase, including the following steps:

[0097] S21: Optionally, at the user terminal (such as a mobile terminal), use a client program (such as APP) to initiate a PMUSQ request to the service provider SP;

[0098] S22: The client program receives the query result set R returned by the service provider SP, and updates κ according to the satisfaction with the result set R i value, and generate a verifiable object VO request sequence RS i , then RS i Send to service provider SP;

[0099]S23: The client program receives the corresponding verifiable object VO returned by the service provider SP;

[0100] S24: The client program verifies the corresponding result set according to the verifiable object VO, including a...

Embodiment 3

[0102] On a general-purpose device, the user uses the functions realized by the program implementing the steps of the present invention. For example, the user uses related application programs, including APP and Web applications, etc., to point of interest (POI, POI, such as Restaurants, tourist attractions, hotels, entertainment facilities, etc.) initiate a quick query request, and the server responds quickly and efficiently, improving user experience.

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Abstract

The invention discloses a service provider reputation-based query verification method for a data outsourcing scene. The method comprises the steps of weighing a possibility of returning a false result by a service provider by using a reputation value through a probability-based query verification policy in a query service of the data outsourcing scene; selectively requiring the service provider to return a verifiable object (VO) according to the reputation value; and verifying the authenticity, correctness and integrity of a query result by using the VO. According to the method, the communication and calculation overheads between the service provider and a user can be remarkably reduced; the efficiency of a query process is improved; and the query result is ensured to be real and reliable with high probability.

Description

technical field [0001] The invention relates to the technical field of data query verification, in particular to the field of data query processing verification in location service technology, and in particular to a query verification method based on service provider reputation in a data outsourcing scenario. Background technique [0002] With the widespread use of mobile devices in social network services and the continuous prosperity of location-based applications, spatial query processing in data outsourcing scenarios has become more frequent and important. Data outsourcing has the potential to provide more efficient and cost-effective services because it relieves the data owner DO of a huge burden in the data management process. In the data outsourcing process, the data owner DO delegates its own data to the service provider SP, and the service provider SP builds an index for the data and feeds back the user's query requirements. Because the server is not within the sco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/2455
Inventor 王勇杨晓东段晓冉陈炬光王晓明
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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