A Novel Methodology Used To Store Big Data Securely In Cloud

Abstract

Big data are voluminous and complex for that retrieving cipher text to a cloud is deemed to be one Of most effective approaches for big data storage and access. The new policies are proposed in cloud where access legitimacy of user and updating cipher text security designated by data owner are two critical challenges to make cloud based data storage practical and effective. Existing approach are completely avoid access policy but in reality it is important to update the access policy amplify the security and dealing with different cause by user join and leave activity. In this system, we plan a secure and verifiable access control scheme based on NTRU cryptosystem for big data storage in cloud. First the new NTRU decryption algorithm meet the decryption fault of the original NTRU, then details of its analyse its correctness, security strength and computational efficiency. When new access policy is specified by big data owner our system allows the cloud server to efficiently update the cipher text. Which is able to update and validate policy against cheating scheme of cloud? It also authorize the end user to validate information by other user for data access and a user to validate the information provided by for recovery of plaintext.