Blockchain-based Access Control Data Distribution System

In the Internet age, data distribution is an important means of information dissemination. However, there are many problems that are difficult to solve in data distribution. Current data distribution needs to rely on third-party distribution platforms, but it is easy to generate centralized rights, which causes data creators to lose their legitimate rights and interests. Moreover, data leakage is easy to occur during data storage and transmission, and data integrity and authenticity cannot be guaranteed. In view of the above problems, a blockchain-based data distribution system is designed. We use the decentralization feature of the blockchain to remove the centralized platform, allowing peers in the blockchain network to directly trade as data creators and data consumers. And the data is tracked using the integrity of the data in the blockchain network. At the same time, the ciphertext-based attribute encryption algorithm and smart contract are used to control the user's access rights. Use cryptography to protect the privacy, security, and verifiability of your data.