Privacy-Preserving Public Auditing for Regenerating-Code-Based Cloud Storage

Privacy-Preserving Public Auditing for Regenerating-Code-Based Cloud Storage

Abstract— Privacy-Preserving Public Auditing for Regenerating-Code-Based Cloud Storage. To protect outsourced data in cloud storage against corruptions, adding fault tolerance to cloud storage together with data integrity checking and failure reparation becomes critical. Recently, regenerating codes have gained popularity due to their lower repair bandwidth while providing fault tolerance. Existing remote checking methods for regenerating-coded data only provide private auditing, requiring data owners to always stay < Final Year Projects 2016 > online and handle auditing, as well as repairing, which is sometimes impractical. In this paper, we propose a public auditing scheme for the regenerating-code-based cloud storage. To solve the regeneration problem of failed authenticators in the absence of data owners, we introduce a proxy, which is privileged to regenerate the authenticators, into the traditional public auditing system model.