Secrete Sharing And Splitting Based Data Security In Cloud Computing

Cloud Computing

Cloud computing provide low cost storage and computational space. Confidentiality, integrity and access control are the main challenges in cloud. In cloud computing, there are three types of services PaaS, IaaS and SaaS. Data security is a major obstacle in the way of cloud computing ,people are still fearing to exploit the cloud computing.To place these issues related to cloud computing. In our Project, we are performing in IaaS i.e. Infrastructure as a service. IaaS is take the servers on rent instead of buying them directly and pay for the use. We can’t trust on cloud service provider because CSP can attack the system and he/she has got all the access rights, for this user might not be comfortable handling over their data to third party. Here to deal with these challenges we use threshold cryptography method. We transfer the data in encrypted format to CSP with the help of keys ,by using threshold cryptography three times encryption is provided and upload on cloud. Data confidentiality and access control are two basic security requirements for outsourced data in cloud computing .Sometime, when we emphasize more on security of data, we forget about performance of systems (DO, CSP, users). In which each keys are divided into group which is used to decrypt the data by user from CSP and there is capability list to control the access. Data confidentiality is achieved and amount of keys are reduced. By implementing these techniques of control access, message digest technique, encryption thrice, we can overcome all problems of security.

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