A multi-source data encryption aggregation reporting method based on blockchain and privacy computing fusion

Abstract

The application provides a multi-source data encryption aggregation reporting method based on blockchain and privacy calculation fusion, and the method comprises the following steps: generating a reporting item statistical value of each reporting item and a standard reporting sequence arranged in the order of the reporting items; converting the standard reporting sequence into a ciphertext reporting result through local homomorphic encryption; submitting the ciphertext reporting result to a blockchain network, generating an abstract value through a standard hash algorithm; using a smart contract to execute a state judgment on the ciphertext reporting result, and registering the reporting object passing the judgment as an on-chain valid reporting object; obtaining the ciphertext reporting result of each node in combination with the corresponding off-chain index, performing position ciphertext aggregation on the node ciphertext passing the verification in the ciphertext domain, and obtaining the aggregation reporting result after decryption, and outputting the final reporting result. The final reporting result obtained by the application has the technical effects of privacy protection, unified caliber, correct structure, traceable source and on-chain verifiable.

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