Bell-LaPadula (BLP) Model

Bell-LaPadula (BLP) model is a formal model for access control based on the finite state machine and lattice (partially ordered set) to control simple operations (read) and all other operations (*, e.g., write) that cause information flow from the high level to the low level to enforce confidentiality.

The mandatory access control (MAC) mechanism of the TCSEC, aka the Orange book, is based on the BLP model.

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