Traditional digital copyright protection relies on centralized authorities, which often lacks transparency and struggle to guarantee data security during ownership transfer. Furthermore, ownership changes require re-confirmation of copyrightwhich costs more time and wastes storage resources. Here a blockchain-based digital copyright transaction scheme is proposed which supports data redaction. Here multi-center chameleon hashing is used for modifying the copyright information in the transaction process. At the same time, a flexible and controllable permission node management mechanism is designed, proposed and implemented here and the optimized attribute encryption mechanism is used for providing the security protection for the node private key. The experimental results and security analysis have shown that the scheme has satisfied the data confidentiality of the copyright transferor, resistance to malicious nodes, and the confidentiality and accountability of the private key of the chameleon hash. In the scenario with more permission nodes, the private key broadcast in the node exit stage has higher efficiency and flexibility, so it’s effective in ensuring data confidentiality of the copyright transferor, resistance to malicious nodes, and the confidentiality and accountability of the private key of the chameleon hash in Blockchain based Internet of Things (BIoT) systems and it can be further used in Blockchain based Industrial Internet of Things (BIIOT) of present time.
Chen et al. (Fri,) studied this question.