Issue No. 02 - February (1987 vol. 13)
R.Y. Kain , Department of Electrical Engineering, University of Minnesota
Public descriptions of capability-based system designs often do not clarify the necessary details concerning the propagation of access rights within the systems. A casual reader may assume that it is adequate for capabilities to be passed in accordance with the rules for data copying. A system using such a rule cannot enforce either the military security policy or the Bell and LaPadula rules. The paper shows why this problem arises and provides a taxonomy of capability-based designs. Within the space of design options defined by the taxonomy we identify a class of designs that cannot enforce the Bell-LaPadula rules and two designs that do allow their enforcement.
taxonomy, Access control, capabilities, capability-based architectures, security policy, *
R. Kain and C. Landwehr, "On Access Checking in Capability-Based Systems," in IEEE Transactions on Software Engineering, vol. 13, no. , pp. 202-207, 1987.