Hidden trace data verification method and system based on homomorphic encryption

Abstract

The embodiment of the invention provides a hidden tracing data verification method and system based on homomorphic encryption, and relates to the technical field of data security and privacy protection. A homomorphic encryption technology is introduced, to-be-verified data is encoded into a computable integer value after being subjected to characteristic value operation, encryption calculation is carried out through the homomorphic encryption technology, a query function in a ciphertext state is constructed to calculate a data verification result, the data privacy of a query party is not exposed in the whole query process, and meanwhile, the data verification result is more accurate. And the query party can only obtain the final verification result of the to-be-verified data and cannot obtain other additional information of the queried party, so that the data privacy of the two parties is protected. In addition, communication overhead is greatly reduced, and good query performance can also be ensured in a scene of mass data.

Description

technical field [0001] The present application relates to the fields of data security technology and privacy protection technology, and in particular, to a method and system for verifying anonymity data based on homomorphic encryption. Background technique [0002] Three-factor verification refers to verifying the authenticity of user identity information by comparing names, ID numbers, and mobile phone numbers. It is mainly used by the network platform to verify the identity of users who have entered or used product permissions. , name, mobile phone number) query information, initiate query verification to the operator, compare it with the operator's database, and return the verification result, so as to determine whether the three elements to be checked are consistent with the data stored by the operator, and then help the query party to conduct business. Decision-making at the level to avoid fraud at the source. [0003] The existing three-factor verification methods inc...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of this method: without any privacy protection measures, the three-element information of the inquiring party will be exposed to the inquired party

[0009] Disadvantages of this method: the number of communication rounds is large, the communication overhead is large, and the requirements for the network environment are harsh. For the case of massive data, it is difficult to meet the requirements for query performance.

Images