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Data encryption, data analysis method and apparatus

A technology of data encryption and data analysis, applied in the Internet field, to achieve the effect of balancing security and accuracy

Active Publication Date: 2018-12-21
ADVANCED NEW TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing local differential privacy algorithms are usually more effective for a single telemetry collection, and some existing local differential privacy algorithms have higher requirements for the changing form of the collected data

Method used

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  • Data encryption, data analysis method and apparatus
  • Data encryption, data analysis method and apparatus
  • Data encryption, data analysis method and apparatus

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Embodiment Construction

[0045] Embodiments of this specification will be described below with reference to the accompanying drawings.

[0046] figure 1 A schematic diagram of a data processing system 100 according to an embodiment of the present specification is shown. Such as figure 1 As shown, the system 100 includes a plurality of user devices 11 and a server 12 . A plurality of user equipments 11 are respectively data providers, which include respective raw data corresponding to the first variable (that is, the value of the first variable) x 1 ,x 2,...,x n . Data providers expect raw data to be protected. The server 12 is the data demander, who wishes to analyze and integrate the relevant information (macro index) of the above-mentioned first variable based on the original data. In the data processing process according to the embodiment of this specification, at the end of the user equipment 11, the original data x 1 ,x 2 ,...,x n Convert to upload data Q 1 ,Q 2 ,...,Q n , and upload...

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Abstract

Embodiments of the present specification provide a data encryption method and apparatus, and a data analysis method and apparatus. Converting the raw data into intermediate data by a stochastic algorithm, wherein the intermediate data takes a value as one of a plurality of discrete values, wherein the stochastic algorithm causes an expected value of the intermediate data to correspond to the raw data, wherein the plurality of discrete values are binary values having the same number of bits; And performing a random flip between 0 and 1 on each bit of the intermediate data to obtain encrypted data of the original data, wherein the random flip satisfies differential privacy.

Description

technical field [0001] The embodiment of this specification relates to the field of Internet technologies, and more specifically, to a data encryption method and device, and a data analysis method and device. Background technique [0002] Under the requirements of Internet big data modeling and analysis, how to protect user privacy is a very important issue. For example, Internet companies will collect telemetry data from user devices and analyze it, which will improve user experience, however, it may also leak user privacy. In this context, differential privacy technology has been applied more and more. Differential privacy is a formal definition of data privacy security, which ensures that all data is modeled and analyzed without revealing individual data information. In the existing mature differential privacy algorithm, the server first collects the user's original data, and then adds perturbation to the original data to achieve differential privacy. However, most use...

Claims

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Application Information

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IPC IPC(8): G06F21/60H04L9/08H04L9/06
CPCH04L9/0643H04L9/0869G06F21/602
Inventor 李梁周俊李小龙
Owner ADVANCED NEW TECH CO LTD
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