The Problem Of Cloud Storage

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ABSTRACT Cloud is simply a vast storage area to store data. The data stored is confidential. Cloud storage is a model of data storage where the data is stored in logical pools, and the physical storage spans multiple servers and often locations, and the entire physical environment is typically managed and owned by a enterprise or large company. These cloud storage providers are responsible for keeping the data available and accessible, and the physical environment protected and running. These third parties are nothing but Trusted Third Party (TTP). People and organizations buy or lease storage capacity from the providers to store user, organization, or application data. Most of the large companies and enterprises use multi cloud storage to store their confidential data which cannot be accessed by everyone. The data stored in the multi cloud is verified and examined in different ways to make it efficient. The integrity of the data is very important in data operations as we are using a lot of different platforms in particular. Because the process of integrity verification of data in multi cloud storage it ensures us that the data is of high quality, correct, more consistent and easily accessible by the clients. Some of the integrity verification methods are homomorphic verifiable response and hash index hierarchy. We prove the security of our data based on multi prover zero-knowledge proof system, which can satisfy completeness, knowledge soundness, and zero-knowledge
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