Enabling Data Integrity Protection in Regenerating-Coding-Based Cloud Storage

To protect outsourced data in cloud storage against corruptions, enabling integrity protection, fault tolerance, and efficient recovery for cloud storage becomes critical. Regenerating codes provide fault tolerance by striping data across multiple servers, while using less repair traffic than traditional erasure codes during failure recovery. Therefore, the authors study the problem of remotely checking the integrity of regenerating-coded data against corruptions under a real-life cloud storage setting. They design and implement a practical Data Integrity Protection (DIP) scheme for a specific regenerating code, while preserving the intrinsic properties of fault tolerance and repair traffic saving.