A privacy protection system and method for online taxi service

Abstract

The invention belongs to the technical field of information security, and discloses a privacy protection system and method for online taxi-hailing services, including an online taxi-hailing server, a taxi-hailing user terminal, and a vehicle user terminal. The online taxi-hailing server completes the system initialization, divides the service space into regions, dynamically analyzes the user's taxi-hailing behavior distribution and the vehicle density distribution through the polynomial aggregation calculation of the ciphertext, forwards the taxi-hailing requests and responses between users, and provides online taxi-hailing services for users ;Taxi-hailing user terminals send encrypted car inquiries and taxi-hailing requests to online taxi-hailing servers to obtain available vehicles near the ride-hailing point; vehicle terminals dynamically update ciphertext location information to provide location detection data support for online taxi-hailing servers. Respond to ride requests. The invention realizes the privacy protection of the user's itinerary and precise location information, as well as the sensitive data of the online taxi-hailing server, and can be used to provide users with safe and efficient online taxi-hailing services.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a privacy protection system and method for online taxi-hailing services. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: With the rapid development of the mobile Internet and the increasing popularity of mobile terminals with location-aware functions, online taxi-hailing services have appeared in people's daily lives. Using the online taxi service, users can find available vehicles near the boarding point anytime and anywhere, which brings great convenience to travel. In traditional online taxi-hailing services, users need to send their precise location information to the service provider. The service provider matches the taxi-hailing users with qualified vehicles through the collected location information, and then provides online taxi-hailing services for the users. During the service ...

AI Technical Summary

Problems solved by technology

The disadvantage of this invention is that the data processing process contains more complicated operations, resulting in a larger calculation cost

The disadvantage of this invention is that: on the one hand, the multi-level cache mechanism can only store static location information, and when the location data is constantly changing, the multi-level cache mechanism proposed in this invention will fail

On the other hand, when users make anonymous queries, they need to generate an anonymous space through the anonymous server to replace their precise location, which will cause a large communication overhead

[0003] In summary, the problems in the prior art are: Existing location privacy protection schemes have problems such as slow data processing, high communication overhead, and limited application scenarios.

[0005] Traditional homomorphic encryption, secure multi-party computing and other technologies cannot balance privacy protection and data processing efficiency well, and anonymization technology will bring large communication overhead

The use of the above technologies cannot meet the characteristics of large number of users and dynamic location changes in online taxi-hailing services

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