Data Sharing and Privacy Preserving Access Policy of Cloud Computing Using Security

People admire the incredible power of cloud computing but cannot fully trust on cloud providers due to the absence of user-to-cloud controllability. The Attribute Encryption Standard (AES) is used to share and secure the encrypted file with different users. On cloud the user stores their sensitive data without direct control, so there is less security over the data. There are many chances for the hacker to consume the resources, modify the data or to corrupt the data. So, the proposed system overcomes all these issues; to keep data secure from hacker (insider/outsiders). We use a privacy-preserving access policy for secure communication and maintaining confidentiality for secure data access and transfer. SHA 512 is used for generating the hash function and authentication in the system. Therefore, providing security for the data sent over the internet is necessary. The owner and user of the server raise many issues without direct control. In this work, we take one middleware, the authority that verifies the user’s request and gives the encryption key directly to the user via mail to obtain resources from the cloud. No one can modify data without user permission. This empowers every user and each authority specialist to claim and control their data associated with the user’s documents inside a protected situation. The proposed system state that, for secret communication with the cloud. The data is given to the owner, and the hash is given to the authority. The user gets the encryption key to access the cipher text.