An efficient access control scheme for files protection
Chu‐Hsing Lin, Chin‐Chen Chang, R.C.T Lee · Journal of the Chinese Institute of Engineers · 1991
A dynamic access control mechanism suitable for hardware implementation is proposed. Each file is safeguarded by q lock values, where q is number of the possible access classes. The access right of a user to some file can be revealed very efficiently. In addition, dynamic operations such as changing a privilege value, insertion or deletion of a user, and insertion or deletion of a file can be done easily. Compared to Wu and Hwangs’ and Chang's methods, the computation of lock values is simple and the verification of an access request is quite efficient. The storage required is proportional to m•n which is less than that of the above‐mentioned methods, where m is the number of users and n is the number of files.