Encrypt data searching method based on 5g communication standard

Abstract

The invention provides an encrypt data searching method based on a 5g communication standard, and therefore the cost spent on communication between a user client and a server can be reduced. The encrypt data searching method comprises that encrypting a forward index on a data provider client to obtain a forward index file, and encrypting a document plaintext line by line to obtain a ciphertext set; creating an inverted index table of a ciphertext type by the server in dependence on the forward index file; receiving a querying trap door uploaded by the user on the server with the querying trap door comprising a keyword trap door and a document number decryption key; judging whether the inverted index table includes an index entry being consistent with the keyword trap door or not; if yes, deciphering the document number ciphertext through the document number decryption key, sorting documents in the ciphertext set according to a rule that the correlation between a keyword and a document is gradually reduced, and returning document summarization ciphertexts whose correlation between the keyword and the document ranks in the top k and corresponding document number ciphertexts to the user client by combining the keyword position information. The encrypt data searching method based on the 5g communication standard is suitable for the technical field of information safety.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for searching ciphertext data based on 5G communication standards. Background technique [0002] The proposal of the fifth generation (5g) mobile communication technology has attracted the attention of the public, and then many countries have accelerated the research on 5g technology. The network convergence resulting from the coexistence of various networks has also brought many problems to be solved, including the secure search of ciphertext data under the 5G communication standard. 5g is a brand-new technology, specifically referring to a new generation of mobile communication technology with a transmission rate of 10GB / S. Compared with 4g technology, 5g technology has more innovations. 4g is an extension of 3g network technology, which improves the network The utilization rate of bandwidth has enhanced the network transmission rate. The 4G network is ba...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a ciphertext data search method based on the 5G communication standard to solve the problem of high communication overhead between the user client and the server existing in the prior art

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