Privacy protection method based on location service in scene of Internet of Things (IOT)

Abstract

Provided is a privacy protection method based on location service in a scene of the Internet of Things (IOT). The privacy protection method based on the location service in the scene of the IOT comprises two privacy protection schemes according to the characteristics on the basis of the location service and the privacy protection level, namely an absolute privacy query scheme for a quite high security level and a query privacy scheme for a quite low security level. Through analysis of application scenes, the secure multi-party computation technology is integrated into IOT location privacy protection, by utilization of technologies such as adding random numbers, using dot product properties, and carrying out homomorphic encryption and oblivious transfer protocols, a dot which is nearest to a query input location in a database to be queried is calculated and found out, different levels of protection measures are taken according to the different application scenes, and therefore the effect that the privacy of query input, query results and contents of the database to be queried is protected is achieved in the absolute privacy protection scheme, and the privacy of the query input and the query results is protected in the query privacy protection scheme.

Description

technical field [0001] The invention relates to the privacy protection of location information under the Internet of Things environment, and proposes a method that is more inclined to protect personal privacy data than public data, and resists privacy violations caused by illegally obtaining user location information. It belongs to the Internet of Things, The cross field of SMC (Secure Multi-party Computation, secure multi-party computation). Background technique [0002] The concept of the Internet of Things originated from Bill Gates' 1995 book "The Road to the Future". In "The Road to the Future", Bill Gates already mentioned the concept of the Internet of Things, but it was limited by the limitations of wireless networks, hardware and sensing devices at that time. development has not attracted attention. With the continuous advancement of technology, the International Telecommunication Union formally proposed the concept of the Internet of Things in 2005. After Obama's ...

AI Technical Summary

Problems solved by technology

For the second type of method, due to inaccurate location information, the returned service information obtained may not be accurate. Some require the user to filter the returned information, and some may return completely irrelevant or useless information to the user. content used

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