Privacy protection encryption method based on homomorphic encryption, information data processing terminal

Abstract

The invention belongs to the technical field of data processing characterized by protocol, and discloses a privacy protection encryption method based on homomorphic encryption, and an information dataprocessing terminal. The method includes: selecting hash function and a secure symmetrical encryption algorithm such as AES as encryption, using public-private key pair to enhance privacy protection,and realizing the request service to multiple users. The invention enables multiple mobile subscribers to cooperate with each other and to use pseudonym techniques to protect their own identity information, at the same time, homomorphic encryption technology is used to protect their own service requests and other information, if the user can get the required information in the base station cache,he will not request the information from the server, which can reduce the risk of exposing the sensitive information of the user; Otherwise, the user sends the request to the server through the aggregation request to realize k anonymity and diversity, which makes it impossible for the service provider to locate the service to the requesting user, which can protect the user's location, query information and query preferences.

Description

technical field [0001] The invention belongs to the technical field of data processing characterized by protocols, and in particular relates to a homomorphic encryption-based privacy protection encryption method and an information data processing terminal. Background technique [0002] At present, the commonly used existing technologies in the industry are as follows: with the rapid development of computer technology and its wide application, people's life is increasingly inseparable from computer products. Not all networks are trustworthy, so information security has become a hot topic in all industries. When obtaining services, it can ensure that the sensitive data of mobile users is effectively protected, and users other than the requester cannot obtain the service information obtained by the requester, that is, they can access and control third parties. Attribute-based encryption is an important encryption method for data access control. So far, scholars have proposed ...

AI Technical Summary

Problems solved by technology

(3) In this scheme, without providing valid attributes and prices to the service provider, the user cannot decrypt the ciphertext CT, because the user does not satisfy the attribute information encryption attribute tree policy of the service provider, because the obtained from TA The SK attribute of the private key does not match the R attribute tree of the service provider

[0004] (1) The traditional threshold policy access control scheme can only provide one-to-one service, and the user cost, server computing cost and communication cost are relatively high

[0005] (2) The existing encryption schemes have poor confidentiality for mobile network payment services and cannot ensure the security of users' private information

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