Secure Non-Linear Network Code Over a One-Hop Relay Network

When there exists a malicious attacker in the network, we need to consider possibilities of eavesdropping and contamination simultaneously. Under an acyclic broadcast optimality linear codes was shown when Eve is allowed attack any $r$ edges. The not under different assumption for Eve. As typical example unicast focus on one-hop relay network single transmission scheme by assuming that attacks only one edge each level. Surprisingly, as result, find non-linear code significantly improves performance over codes. That is, non-liner realizes imperfect security this model cannot be realized This kind superiority still holds even with considering effect sequential error injection information leakage.