Log Security Protection Model Incorporating Blockchain Smart Contracts.

Blockchain is a promising technology for data integrity protection due to its non-tampering and traceability. Current works cannot well balance the authenticity, integrity and confidentiality for the large-scale log data protection. To address this issue, a log data security protection model based on smart contract, including micro log data protect environment (MiLDPE) and macro log data protect environment (MaLDPE), is proposed. MiLDPE is the blockchain node associated with the hardware level trusted computing SGX technology to guarantee that the log data can only be audited on the node that generated it. MaLDPE is a cluster of MiLDPE nodes where the log data access is controlled by a group of smart contracts and the log data integrity and confidentiality is ensured by a random node selection algorithm. Finally, the performance of proposed model is demonstrated and verified through numerical experiments. [ABSTRACT FROM AUTHOR]