An improved cloud data auditing scheme with enhanced security based on trusted execution environment-based multi-replica data audit

With the widespread adoption of cloud computing, cloud storage technology has developed rapidly, but issues of data security and privacy protection have also become prominent. As a key means to ensure the security of cloud storage data, cloud auditing technology strengthens the data security defense for users by verifying data integrity and availability. In recent years, advancements in trusted execution environment (TEE) technology have brought higher security guarantees to cloud auditing. However, existing TEE-based multi-replica data auditing schemes, such as TEEMRDA (trusted execution environment-based multi-replica data audit), still have security vulnerabilities when facing specific attacks. This paper deeply analyzes the security risks of the TEEMRDA scheme, proposes an improved cloud data auditing scheme, comprehensively evaluating them from dimensions such as security and performance. The results show that the improved scheme performs excellently in resisting specific attacks and has significant advantages in performance. The scheme proposed by Hui Tian et al. (2025) exhibits potential security vulnerabilities under specific attack scenarios. The improved scheme can overcome the security problems and can be applied to unmanned aerial vehicles.