Secure digital documents sharing using blockchain and attribute-based cryptosystem

Education is developing very fast with the advancement of technology and the process of the smart era. One can store all educational certificates and credentials in the form of an electronic wallet or a folder. By using this electronic transformation of certificates, users can transfer the certificates from one place to another very easily. The "data island" phenomenon, central data storing, confidentiality, reduced security, and integrity are common problems of electronic data transfer. This study presents a safe sharing of digital documents which uses blockchain technology and an attributed-based cryptosystem to offer a creative solution to the abovementioned issues. The proposed scheme uses Ethereum smart contracts and achieves fine-grain access control by using attribute-based encryption. Finally, we verified our model using the test network and compared the performance with some existing state-of-arts. The results of proposed scheme generated by simulations are more feasible and effective in challenging environments.