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Friend recommendation system based on hidden strategy attribute-based encryption and method thereof

An attribute-based encryption and friend recommendation technology, which is applied in the field of social network privacy protection, can solve data privacy leakage and other problems, and achieve the effect of reducing decryption costs and information encryption costs

Active Publication Date: 2021-05-07
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors found that when people join mobile social networks, they will build characteristic profile attributes, such as current location, diet, shopping preferences, etc., and then they will share their profile with nearby users who are willing to make friends; but in During the process of matching friends, the leakage of some personal information, such as location privacy, identity privacy, data privacy, etc., may easily lead to some unexpected consequences

Method used

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  • Friend recommendation system based on hidden strategy attribute-based encryption and method thereof
  • Friend recommendation system based on hidden strategy attribute-based encryption and method thereof
  • Friend recommendation system based on hidden strategy attribute-based encryption and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The purpose of this embodiment is to provide a friend recommendation system based on hidden policy attribute-based encryption.

[0040] A friend recommendation system based on hidden strategy attribute base encryption, including:

[0041] The trusted center is configured to provide registration services for issuers and requesters, and to distribute keys;

[0042] The matching server is configured to receive and store the publisher's self-description ciphertext and the requester's interest ciphertext; analyze whether the publisher's self-description information matches the requester's interest, and recommend friends according to the matching result;

[0043]The publisher is configured to encrypt its self-description information according to the requester's interest policy, and send its self-description ciphertext to the matching server; at the same time, add corresponding tag attributes to its self-description so that interested requesters can receive To the publisher's...

Embodiment 2

[0080] The purpose of this embodiment is to provide a friend recommendation method based on hidden policy attribute-based encryption.

[0081] like figure 2 As shown, it is a flow chart of a friend recommendation method based on hidden policy attribute-based encryption provided by the present disclosure, and the steps include:

[0082] Step 1: In the initialization phase, the trusted center generates the public key PK and the system master key SK, the organization registers the issuer and the requester, and generates an interest attribute key for the requester;

[0083] Step 2: The matching server collects the requester's interest ciphertext;

[0084] Step 3: The publisher encrypts the personal information ciphertext and sends it together with his self-describing ciphertext policy, and sends the self-describing tag key to the matching server;

[0085] Step 4: The matching server analyzes the interest ciphertext obtained from the requester and the publisher's self-descriptio...

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Abstract

The invention provides a friend recommendation system based on hidden strategy attribute-based encryption and a method thereof, and the method employs a linear secret sharing strategy to the user matching of a social network, and employs an improved user matching method based on anonymous ciphertext strategy attribute-based encryption to build a formal social relation between users; and the security of privacy protection is improved; meanwhile, most of encryption work is transferred to a preparation process, the process can be operated at a time and is used for encrypting all information, the information encryption overhead of a publisher is effectively reduced, a key packaging method is adopted for an information decryption key, most of information decryption cost is shared to a service platform, and therefore the decryption overhead of a requester is reduced.

Description

technical field [0001] The present disclosure relates to the technical field of social network privacy protection, and in particular to a friend recommendation system and method based on hidden strategy attribute-based encryption. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the growth of mobile devices, the application of mobile social networks has been widely applied to smartphones and tablets, such as WeChat, QQ, Meituan, Weibo, etc. Profile matching is an effective way to discover new friends in mobile social networks. The inventors found that when people join mobile social networks, they will build characteristic profile attributes, such as current location, diet, shopping preferences, etc., and then they will share their profile with nearby users who are willing to make friends; but in During the process of matching friend...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/58
CPCH04L63/0428H04L63/062H04L63/0421H04L63/205H04L51/04H04L51/214H04L51/52
Inventor 吴磊赵胜男
Owner SHANDONG NORMAL UNIV
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