  In ownership-based access control frameworks with the possibility of
delegating permissions and administrative rights, chains of delegated accesses
will form. There are different ways to treat these delegation chains when
revoking rights, which give rise to different revocation schemes. In this
paper, we show how IDP - a knowledge base system that integrates technology
from ASP, SAT and CP - can be used to efficiently implement executable
revocation schemes for an ownership-based access control system based on a
declarative specification of their properties.
