Abstract : Faced with the problem that when the transaction process information of the traditional blockchain system is made public and transparent on the chain, it is extremely easy for attackers to reveal secrets. According to the loopholes that exist when the traditional blockchain system completes the transaction process, zero-knowledge An in-depth and detailed exploration was carried out to prove the method to solve the problem of privacy leakage. The solution can not only encrypt the transaction data in the blockchain, but also allow the chain code end to prove the compliance of the transaction process when all transaction data is ciphertext. The method is analyzed in detail in the blockchain. Application effects in information security assurance processes. In addition, a collaborative improvement plan based on the IPFS system is proposed to address possible inconsistencies in on-chain and off-chain data under encryption.
Content directory:
1 Preliminary knowledge
1.1 Blockchain
1.2 Zero-knowledge proof
1.3 Paillier algorithm
1.4 IPFS system
2 system solution
2.1 Solution model
2.2 Solution description
3 plan implementation
3.1 Algorithm design
3.2 Zero-knowledge proof verification
3.3 Design of data on-chain transaction plan
3.4 Data collaborative design
4 Security Analysis
5 Experimental analysis
5.1 Functional testing
5.2 Efficiency test
6 Conclusion
Due to the limitations of traditional blockchain systems in terms of on-chain data integrity and security, on-chain and off-chain data cannot be efficiently coordinated. Therefore, this article proposes to ensure the strong correlation between on-chain and off-chain data while providing privacy protection. Zero-knowledge proof, off-chain computing and other technologies are used to solve key issues of data collaboration, and ultimately achieve blockchain performance expansion and security performance improvement. Generate zero-knowledge proofs for off-chain transaction data and store them in the blockchain to achieve privacy protection.
Blockchain is a distributed ledger that uses cryptography technology to connect blocks in the form of a linked list and is completed and maintained by many participants. Due to its decentralization and non-tampering characteristics, it has been more deeply received in recent years. research and use. Among them, the blockchain platform with the alliance chain as the framework (