Research on Transparent Access Technology of Data Resources Based on Blockchain

With the advent of the era of big data, data has become an intangible asset with great social and economic value. Access control technology is an important means to limit the access range of users to data and effectively ensure the safe access of data by formulating relevant policies. Data resource transaction is an important means to give full play to the value of service data resources. However, at present, the domestic service data resource transaction market is not as prosperous as expected. The unique attributes of service data resources make it difficult to be quantitatively analyzed, and it is also prone to theft and leakage. Therefore, the transaction of service data resources urgently needs a new safe and reliable transaction system. In view of this situation, a transparent access scheme of heterogeneous data resources based on Web Services is proposed, and the system architecture and key technologies in implementation are given. This paper formulates the corresponding access control strategy according to the attributes of Web data flow elements, and proposes an improved multi-pattern matching algorithm AC_ BMH_ QS, and apply the algorithm to the access control policy matching process, improve the shortcomings of the original policy matching method, and better realize the fast and real-time access control decision under multi-policy conditions.