چکیده (انگلیسی):

Cloud storage enables users to remotely store their data and
benefit of the demand high quality cloud applications without the
difficulty of local hardware and software management. Though the
benefits are clear, such a service is also reliable to the users’ physical
possession of their outsourced data, which inevitably poses new
security risks towards the recovery of the data in cloud. In order to
address this new problem and further achieve a secure and useful
cloud storage service, we propose in this study a flexible distributed
storage integrity mechanism, utilizing the homomorphic token and
distributed data. The proposed design allows users to check the cloud
storage with very lightweight communication and computation cost.
The auditing result not only ensures strong cloud storage correctness
guarantee, efficiency, but also simultaneously to access data error
localization, i.e., the identification of misbehaving server. Considering the
cloud data are dynamic in nature, the proposed design future supports
secure and efficient dynamic operations on outsourced data, including
block modification, update, deletion and append. The proposed scheme is
highly efficient and secure against Byzantine failure, malicious data
modification attack and even server colluding attacks.