Key Technologies Of Privacy Protection Oriented Online Taxi Scheduling Management

In recent years,the living standard of urban residents has been greatly improved,and the dependence of residents on taxis for daily travel has also been increasing.With the development of science and technology,the emergence of various applications has begun to affect our lives.As a breakthrough in the taxi field,online taxi service has gradually become a perfect service system.Online taxi service can reduce waiting time of passengers and drivers which improves the efficiency of travel.On the other hand,the security problems caused by the waiting time have not been paid enough attention.The information leakage caused by the online car booking service makes our privacy unable to be protected properly.In this paper,aiming at the privacy protection of network car appointment service,the existing network car appointment service is improved by combining encryption technology and road network matching method.The matching service under privacy protection is realized by designing road network matching algorithm under ciphertext.The purpose of this paper is to complete the travel matching function under privacy protection.In order to simplify the computation under ciphertext and improve the efficiency of travel matching,this paper combines the road ne twork embedding algorithm,expands the original coordinates in a high-dimensional way,and tests the accuracy of the matching in different dimensions.In order to further reduce the calculation time of the whole matching process,the calculation of road network embedding is divided into two parts: the pre-calculation in plaintext and the comparison in ciphertext.The pre-calculation preprocesses the road network map,so that the server can screen the available drivers and greatly reduce the calculation load.At the same time,this paper uses the properties of Partial Homomorphic Encryption to complete a series of operations under ciphertext.By designing a security comparison method between two servers,the size of ciphertext can be compared under the condition that the computing server cannot obtain plaintext,and the basic operations under ciphertext can be carried out,so that to combine the road network embedding algorithm and the homomorphic encryption.Effective combination.After completing the calculation,the server gets the nearest driver's serial number and sends the result to both drivers and passengers to complete a match.