Secure retrieval method for sensing information virtual service in internet of things

Abstract

The invention discloses a secure retrieval method for a sensing information virtual service in the internet of things. The method comprises (1) a keyword wildcard-oriented fuzzy set construction algorithm, and (2) a wildcard fuzzy keyword-based retrieval algorithm. The method is characterized in that a sensing node in the method is in charge of perceiving and transmitting sensing information; a base station is in charge of receiving and transmitting the sensing information; a local area manager is in charge of receiving, storing and transmitting the sensing information and constructing a keyword wildcard fuzzy set; a cloud server is in charge of receiving and storing the sensing information, authenticating and authorizing a user, performing wildcard fuzzy keyword-based retrieval, performing feedback and the like; and the user is in charge of determining a search keyword w, constructing a keyword w wildcard fuzzy set, calculating a threshold function T(w), transmitting and receiving a feedback result and the like.

Description

technical field [0001] The invention belongs to the field of security application of sensing information virtual service in the Internet of Things, and its purpose is to provide users with a safe retrieval method in the process of sensing information virtual service in the Internet of Things, so that it can provide services for the majority of users safely and effectively , which involves two processes of fuzzy set construction oriented to keyword wildcards and retrieval based on wildcard fuzzy keywords. To this end, a fuzzy set construction algorithm oriented to keyword wildcards and a retrieval algorithm based on wildcard fuzzy keywords are respectively constructed. Background technique [0002] With the rapid development of the Internet of Things technology, various information sensing devices (sensor networks, radio frequency identification systems, infrared sensors, laser scanning, etc.) have also achieved unprecedented development, and the data information sensed by th...

AI Technical Summary

Problems solved by technology

Although these encryption methods can effectively protect the security of data resources in the process of transmission, storage and service, they also face two problems: (1) How to effectively retrieve the data required by users from a huge amount of encrypted information Information is a very difficult problem; (2) How to identify the retrieved data information from a huge amount of encrypted information has not been tampered with or forged

The main reason for these two problems is that the encrypted data resources become ciphertext, and users cannot determine the information they need based on the ciphertext, nor can they determine whether the received information has been tampered with or forged based on the ciphertext.

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