Cloud computing is a space on the web where the users can remotely store data on the
cloud. The user relies solely on the services of the cloud service provider to ensure the security and
privacy of his data. The confidential and critical data is prone to unauthorized access by third party
APIs, employees of the cloud service provider or security agencies to serve their vested interests. In
this paper to ensure the security of data stored over public cloud discussed as a novel two-tier approach
where the data is stored in an encrypted format and only the owner of the data can have access
to the original data shared across the cloud. The algorithm OwnData: Encryption and Decryption
is based on AES file encryption, which has the flexibility to be implemented across different
cloud platforms. We have developed the application of our architecture on the Google Drive platform.
Against the existing services, as provided by various Cloud Service Providers (CSPs) as listed
in their (SLA) Service Level Agreement, we have presented a perspective on how a customer can
monitor and maintain the security of private data.
Keywords: Algorithm, Cloud Computing, Cloud Security, Cloud Security Provider, DDoS, Decryption, Encryption, AES Algorithm, SHA Algorithm, Security Models.
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