A method and system for discovering group private information
A technology of privacy information and discovery method, applied in the field of group privacy information discovery method and system, can solve problems such as reducing user experience, and achieve the effects of reducing computing and communication overhead, expanding cost saving, and improving computing efficiency
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[0057] The method for discovering group private information provided by the present invention is applicable to any mobile terminal user oriented to group services, and the method mainly includes the following four steps:
[0058] The first step is to initialize the private information: in the case of given security parameters, the public key-private key pair of the system is generated by running the algorithm, and the system private key is randomly decomposed into two parts, one part is used as the private key of the relay server, The other part is used as the private key of the server, and the ciphertext encrypted by the system public key can only be decrypted after using both parts of the private key for decryption calculation.
[0059] In the second step, the relay server assists the service provider in performing DP clustering calculation: Since each relay server only performs clustering calculation on user data information whose starting point is within the service area, t...
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