Single Node Failure Clause Samples

Single Node Failure. Although all KDCs will not participate in the mutual authentication phase and the group key generation phase, each group still needs to be managed by a KDC. This is because each group may need the KDC to act as a judging body to expel malicious nodes. If the KDC fails, since all KDCs share the same blockchain that stores all GNs’ authentication parameters, it only needs to switch to another KDC. This means that in our protocol, as long as there is a working KDC, the entire system can operate normally.