Secure Logging and Public Audit for Operation Behavior in Cloud Storage

In cloud storage, auditing for operation behavior logs (OBLs) plays an increasingly important role in the field of cloud auditing. In this paper, we first introduce our third party auditing model for user's operation behavior. Further, a novel secure logging approach is proposed to ensure the OBLs security in cloud. Then, we present a secure public auditing scheme for OBLs. Specifically, BLS signature and random mask technique are used by third party auditor to verify the validity of OBLs in auditing process, by which our scheme achieves secure public privacy-preserving verification for OBLs. The experimental results show that our scheme provides secure and high efficiency in auditing performance.