Date Added: Jul 2011
In order to provide reliable and secure communication against eavesdroppers and jammers over networks, Universal Secure Error-Correcting Network Codes (USECNC) based on Maximum-Rank-Distance (MRD) codes have been introduced. This code can be applied to any underlying network codes. However, Shioji et al. introduced a reasonable network model against the code. In their model, an attacker eavesdrops information symbols from some links, where the set of eavesdropping links is re-selected during one packet transmission. The MRD-code-based USECNC cannot guarantee the security against eavesdroppers under this model.