Embedded Authentication and Blockchain in Micro-course

The decentralization and consensus of blockchain provide the network trust and data certification of a low cost. In addition to financial technology, it has also attracted widespread attention in many applications. In this paper, we discuss on the design of the micro-course certification in university. The proposed architecture is suitable for the integration of school information systems and enhances the trust and micro-course elective. Unlike general blockchain applications, micro-course certification must be provided by a university-approved teacher or staff, thus it is important for their authentication. In this application, the password authentication is not secure enough, and the cost of public key certification is too high. Therefore, we use the authenticated public key technology of the RSA system technology, the authenticated data is the predetermined portion and embedded to RSA public key, such that the authenticated certifier and effective period can be directly provided by RSA public key. In comparison with traditional RSA, we only modified the key generation and the other part of RSA cryptosystem are all the same. This combination of blockchain and public key authentication can achieve a secure and easy-to-use micro-course certification system.