Secure Public Audit for Operation Behavior Logs in Shared Cloud Storage

摘要

In cloud storage, the data owner and data users can easily perform cooperative work on shared data. In this paper, we focus on operation behavior auditing in shared cloud storage, which is significant for the avoidance of potential crimes in the cloud and equitable accountability determination for the forensic investigation in shared cloud. We first introduce a novel secure public auditing model for operation behavior in shared cloud. Based on this, a secure auditing scheme for operation behavior logs (OBLs) is presented. Specifically, by using the certificateless signature, our scheme provides public privacy preserving auditing. The experiment analysis proves that our scheme can audit the validity of OBLs in the cloud efficiently. To the best of our knowledge, our scheme is the first solution of public auditing for OBLs in shared cloud.