Security Enhancements for Data-Driven Systems: A Blockchain-Based Trustworthy Data Sharing Scheme

With the increasingly prominent value of big data, data sharing within enterprises and organizations has become popular, many institutions have established centers to achieve effective storage sharing. Meanwhile, cyberspace security privacy most critical issue that people are concerned about since shared often involves commercial secrets sensitive information. At present, encryption techniques been applied protect stored in by centers. However, challenges efficient sharing, secure management decryption keys, deduplication plaintext, transparency auditability access arise. These may obstruct development data-driven systems. To meet these challenges, we propose a trustworthy scheme introduce blockchain, proxy re-encryption (PRE), trusted execution environments (TEEs) into Our mainly enables (1) automatic distribution (2) reduction reduplicative (3) recording. Finally, implement proposed compare it with other existing schemes. It is demonstrated our reduces computation communication overhead.