TY - CONF AU - Lanotte, Ruggero AU - Maggiolo-Schettini, Andrea AU - Tini, Simone AU - Troina, Angelo AU - Tronci, Enrico ED - Lopez, J. ED - Qing, S. ED - Okamoto, E. PY - 2004 DA - 2004// TI - Automatic Covert Channel Analysis of a Multilevel Secure Component BT - Information and Communications Security, 6th International Conference, ICICS 2004, Malaga, Spain, October 27-29, 2004, Proceedings T3 - Lecture Notes in Computer Science SP - 249 EP - 261 VL - 3269 PB - Springer AB - The NRL Pump protocol defines a multilevel secure component whose goal is to minimize leaks of information from high level systems to lower level systems, without degrading average time performances. We define a probabilistic model for the NRL Pump and show how a probabilistic model checker (FHP-mur$\varphi$) can be used to estimate the capacity of a probabilistic covert channel in the NRL Pump. We are able to compute the probability of a security violation as a function of time for various configurations of the system parameters (e.g. buffer sizes, moving average size, etc). Because of the model complexity, our results cannot be obtained using an analytical approach and, because of the low probabilities involved, it can be hard to obtain them using a simulator. L1 - http://mclab.di.uniroma1.it/publications/papers/papers/Lanotte2004a.pdf UR - https://doi.org/10.1007/b101042 DO - 10.1007/b101042 N1 - exported from refbase (http://mclab.di.uniroma1.it/publications/show.php?record=34), last updated on Thu, 22 Nov 2012 14:59:18 +0100 ID - Lanotte_etal2004 ER -