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A smart contract privacy data processing system and method for blockchain

A privacy data and smart contract technology, applied in the field of blockchain to ensure efficiency, increase the consumption of computing resources, and efficiently calculate the cost

Active Publication Date: 2022-07-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a smart contract privacy data processing system and method for blockchain, which solves the privacy protection problem of blockchain based on the underlying library of homomorphic encryption

Method used

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  • A smart contract privacy data processing system and method for blockchain
  • A smart contract privacy data processing system and method for blockchain
  • A smart contract privacy data processing system and method for blockchain

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Embodiment 1

[0045] like figure 1 As shown, the present invention provides a smart contract privacy data processing system for blockchain, including a main chain, several fully homomorphic encryption algorithm libraries deployed on the blockchain in the form of precompiled contracts, and business smart contracts ;The main chain is used to deploy precompiled contracts that satisfy the fully homomorphic encryption algorithm by using the precompiled contract method, and is used as a business smart contract deployment and execution platform during the running phase, and stores the user's public key information; precompiled contracts are used for The fully homomorphic encryption algorithm library is compiled into the blockchain network in the form of a precompiled contract, and the business smart contract developers call the fully homomorphic encryption algorithm by calling the business smart contract; the business smart contract is used to call the fully homomorphic encryption algorithm. Encry...

Embodiment 2

[0049] like figure 2 As shown, the present invention provides a smart contract privacy data processing method for blockchain, and its implementation method is as follows:

[0050] S1. Use the fully homomorphic encryption algorithm library to provide a fully homomorphic encryption algorithm for business smart contracts. The implementation method is as follows:

[0051] S101. Package the security parameter generation program code, the public key generation program code, the private key generation program code, the fully homomorphic operation program code, the homomorphic encryption program code, and the homomorphic decryption program code into a fully homomorphic encryption algorithm library;

[0052] S102. Compile the fully homomorphic encryption algorithm library into the blockchain network in the form of a precompiled contract in the form of a precompiled contract;

[0053] S103 , disclosing the fully homomorphic encryption algorithm precompiled contract, providing the addr...

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Abstract

The invention discloses a smart contract privacy data processing system and method for blockchain, belonging to the technical field of blockchain, including a main chain, a number of fully homomorphic encryption deployed on the blockchain in the form of precompiled contracts Libraries and business-oriented business smart contracts that call the fully homomorphic encryption library. The invention guarantees the privacy of the blockchain business smart contract when executing the business smart contract data processing, greatly improves the privacy and security method of the business smart contract data processing, and solves the problem of the block based on the fully homomorphic encryption underlying library. Chain privacy protection issues.

Description

technical field [0001] The invention belongs to the technical field of blockchain, and in particular relates to a system and method for processing smart contract privacy data for blockchain. Background technique [0002] Since its birth in 2008, blockchain technology has experienced rapid development, and new theories and technologies have been born. As various blockchain projects begin to involve in the fields of privacy and security, people urgently hope that the data on the blockchain can have stronger security and privacy. The blockchain itself has security features such as decentralization, non-tampering, and non-forgery. It is very suitable for ensuring the long-term and stable preservation of data, and has important commercial value and practical significance. The security of the blockchain is accomplished by each node holding a ledger and consensus on the ledger, which enables nodes participating in the blockchain network to view all data on the blockchain. This me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/62G06F21/60G06F16/27
CPCG06F21/6245G06F21/602G06F16/27
Inventor 吴晓华余方剑吴丰恒汪腾睿
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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