Image Stack Management and Data Access Control for Multi-Authority Cloud Storage

Cloud computing nowadays are gaining high importance from government services, private users and public sectors. The rise in cloud computing is due to the provided facilities such as flexibility, disaster recovery, security, etc. Moving data into cloud servers provide great convenience to users because they just have to upload their data and not care about the hardware management and security. But, the sensitive or privacy relevant data has some major implications. The techniques used so far for storage security are the cryptographic methods and some compression techniques such as compression sensing, JPEG compression technique, etc. to make more space for future data. In this paper we propose a system so that the cloud storage can be made more secure. To increase the efficiency, we are using DCT algorithm for compression and AES for encryption. The main concept of the proposed system is to increase the security so we are splitting the image in chunks. This Image splitting method, lowers the risk of image being retrieved by attacker as we upload the chunks instead of image.