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Word2vec and ASPE-based efficient fuzzy searchable encryption method

An encryption method and fuzzy technology, applied in character and pattern recognition, calculation model, other database retrieval, etc., can solve the problems of personal information leakage, endanger personal information security and privacy rights, etc., to improve search efficiency, ensure security, The effect of good semantic features

Pending Publication Date: 2022-04-26
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also leads to very serious personal information leakage, because any malicious website server can steal information such as search keywords and search results of query users, thus seriously endangering personal information security and privacy

Method used

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  • Word2vec and ASPE-based efficient fuzzy searchable encryption method
  • Word2vec and ASPE-based efficient fuzzy searchable encryption method
  • Word2vec and ASPE-based efficient fuzzy searchable encryption method

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Embodiment Construction

[0040] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] The invention proposes an efficient fuzzy searchable encryption method based on Word2vec and ASPE, and the method is mainly applied to the cloud server electronic document encryption scene. The main content of the algorithm is as follows: To implement the fuzzy search function, the data owner uses all the documents as input to Word2vec to train a semantic correlation model and generate a keyword vector for the indexed keywords. The data owner then encrypts the file index using the Asymmetric Vector Product Preservation Encryption Algorithm (ASPE).

[0042] In the present invention, a system model is designed for fuzzy searchable encryption based on multiple keywords, mainly involving three roles: data owner, cloud server and data user.

[0043] Data Owner: This entity owns the clear text of all files. To ensure secur...

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Abstract

The invention provides an efficient fuzzy searchable encryption method based on Word2vec and ASPE. The method is mainly applied to the field of secret state information fuzzy search. According to the algorithm, firstly, synonym correlation coefficients are generated by means of Word2vec, then the coefficients are combined with a keyword matrix, and a trap door matrix of a user is obtained through an expanded ASPE algorithm. And performing Hadamard product operation on a file index matrix generated by using the expanded ASPE algorithm and a trap door matrix to obtain a file correlation sequence, and finally, decrypting the file by a user through a key to obtain a final plaintext. Experimental simulation shows that the algorithm not only can effectively hide plaintext information and protect forward privacy and backward privacy of a user, but also greatly improves the defects that a traditional algorithm is large in calculation amount and occupies a large amount of storage space, and greatly improves the fuzzy search efficiency.

Description

technical field [0001] The invention relates to the field of machine learning and searchable encryption, in particular to a search encryption method. Background technique [0002] With the rapid development of big data and cloud computing, more and more users choose to outsource a large amount of electronic document data to the cloud for secure storage and processing. Privacy protection of electronic documents is a key issue in outsourcing cloud services. A simple solution to this potential threat is to encrypt and upload electronic documents, and download and decrypt them according to user needs. But when the documents were converted into ciphertext-based forms, they did not retain their original features. Neither the user nor the cloud server can quickly distinguish which documents are in the ciphertext form required by the user. Searchable encryption can provide an effective solution for file search while ensuring the privacy and security of documents. [0003] The tr...

Claims

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Application Information

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IPC IPC(8): G06F21/62G06F21/60G06F16/901G06F16/903G06F16/906G06K9/62G06N20/00
CPCG06F21/6227G06F21/6245G06F21/602G06N20/00G06F16/906G06F16/903G06F16/901G06F2221/2107G06F18/22G06F18/24147
Inventor 姚燕青袁玉霦翟征德
Owner BEIHANG UNIV
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