Anti-tampering method of shared private data based on multi-party secure computing and blockchain

Anti-tampering method of shared private data based on multi-party secure computing and blockchain

연구 분야: Cryptography

학회: CIBDA '24: Proceedings of the 5th International Conference on Computer Information and Big Data Applications

Shared private data is vulnerable to tamper-proof. In order to ensure the security of data, a tamper-proof method for shared private data based on multi-party secure computing and blockchain is proposed. According to the characteristics of multi-party secure computing and blockchain, an anti-tampering architecture of shared private data is established, and an encryption method of shared private data is proposed. Multi-party secure computing and blockchain are introduced, and the byte coding of the sent information is randomized to construct a network loss function. The gradient approximation of the network loss function is obtained under the condition of setting the sample size, and a two-way overlapping mitigation encryption process is formed, and finally the anti-tampering encryption of shared private data is realized. The experimental results show that the security factor of network information and the security factor of data stored by blockchain nodes are high, which can realize the tamper-proof of shared private data, ensure the security of data and have better tamper-proof performance.