Trustworthy Cloud Storage Data Protection based on Blockchain Technology

A cloud-based repository is the most popular option for individuals and businesses to share data digitally. To move and store the data, conventional cloud hosting has come to rely on big storage providers functioning as reliable intermediaries. Although cloud providers offer robust security measures, rising usage and demand have made these centralized platforms prime targets for security breaches and hackers. This research study proposes a blockchain-based public key cryptosystem data protection scheme to address the problem. All of the data is automatically encrypted using the homomorphic technique. The ciphertext index Ci is created via a public key accessible crypto technique and set aside in the blockchain. At the same time, confidential information is protected and published in a cloud storage server. A reliable verification cloud server is used to access and manage data across users. The blockchain automatically syncs data transactions, which is more equitable to protect the confidentiality and integrity of the shared data process. In the case of numerous users, the integration of distributed ledger technology and a dedicated cloud verification server makes it easier to implement a fair and reliable access control system. Finally, the authentication process and performance evaluation demonstrate the schemes ensure the efficiency.