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Abstract : |
Abstract | Trac analysis poses a serious threat to communication security, especially in wireless networks. Strong encryption and trac padding are often used to hide message contents as well as trac patterns. In dynamic environment, when real trac pattern changes, i.e., the network switches its operation mode, determining an optimal cover mode such that the real trac service is not degraded and the real trac patterns are \covered " becomes a challenge. In this paper, we formulate this optimality problem and try to solve it through appropriate routing of end-to-end ows. Heuristic-based routing algorithm is proposed and evaluated., |
