Date of Publication :6th March 2017

Abstract: Now a day’s a number of clients were liked to store their data in public cloud along with the fast development of cloud computing. Novel security problems need to be resolved in order to facilitate processing of data for numerous clients over public cloud. Whenever a client is limited to access PCS (Public Cloud Services), he will hand over its proxy for his data process later upload them. Furthermore, remote checking of data integrity is an important security problem in public cloud. It provides the customers for checking that whether their data that is outsourced are kept undamaged without the requirement of downloading entire data. From the security problems, we propose an enhanced proxy-oriented data uploading and a model for remote data integrity checking over identity-based public-key cryptography: proxy-oriented identity-based data uploading and remote data integrity checking on public cloud. We provide a formal definition, system model as well as a model for security. Later, a concrete P-IDURIC protocol is designed with the help of bilinear pairings. The projected P-IDURIC protocol provides enhanced security based on hardness of the computational Diffie–Hellman problem. Furthermore the protocol is efficient and flexible. Depends on the actual client’s authorization, the projected P-IDURIC protocol will realize delegated remote data integrity checking, private remote data integrity checking, and public remote data integrity checking

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