A Hybrid Cryptographic Approach for Secure Cloud-Based File Storage

The tremendous increase of sensitive data on the cloud has rendered it more vulnerable. Thus, undoubtedly, the risk stems from an expanding number of individuals with harmful motives. Because the cloud is handled by a third party, guaranteeing cloud security services is critical. The security of the data may be strengthened by combining different symmetric key techniques to store the information on the server so that even if someone gains access, they are unable to access the original data. It must be decrypted, thus. A hybrid model that combines Advanced Encryption Standard (AES) algorithm and Elliptical Curve Cryptography (ECC) is put forth. ECC is employed to complete the user verification process and maintain the security of private data. Data is encrypted on the client side and then decrypted after being downloaded from the cloud, the AES technique is used to securely store and retrieve users' data in the cloud. Data is protected by encryption on the client's side and then decoded after it has been downloaded from the cloud. Enabling a suitable access mechanism to stop unlicensed access to information in the system and safe storage to allow access to information over a cloud-based network would be advantageous for the complete prototype of the suggested solution. The proposed method is efficient for encrypting small to moderate amounts of data as 1.02 milliseconds is a relatively fast encryption time.