Data Storage and Data Security in Cloud Server

Abstract: Cloud Computing can be defined as a new style of computing in which dynamically scalable and often virtualized resources are provided as services over the internet. With Cloud Computing Technology, users utilize a variety of devices, including PCs, laptops, smart phones to access data, programs, storage, and application development platforms over the internet, through services accessible by cloud computing providers. Cloud Computing moves the application software and databases to the large data centers. We recommend in this paper a more valuable secure storage of data in the cloud with the authentication scheme. It allows users to store data in secure mode with less

blocks, including: data update, delete and append because the cloud data are dynamic in nature. Extensive detailed security and performance analysis shows that the proposed method is highly efficient and resilient against Byzantine failure, malicious data modification attack, and server attacks. This scheme can almost guarantee the simultaneous localization of data errors, i.e., the identification of the misbehaving server(s).

Keywords: Cloud Computing, Byzantine failure, authentication scheme, sentinels, Cryptographic techniques.