Secure Cloud Storage Access Framework Using Blockchain Technology

Abstract

Data is often stored as ciphertext on cloud servers to maintain privacy and security. A third-party access key and intervention are required if a data user wants to access encrypted data. A fraudulent third party, however, will jeopardize the system's security. A blockchain-based enhanced secure cloud storage access system was presented to address this issue. We achieve a novel technique by combining Ethereum blockchain technology and ciphertext-policy attribute-based encryption with a reduced attribute string. There is no reliance on a trusted third party for the suggested cloud storage architecture. Our plan contains three essential components. Our technique is superior and more viable based on processing cost, encryption, and decryption time.