Method for changing the group key in a group of network elements in a network

摘要

The method involves joining a new network unit to a group of network units (P 1-P 4) during changing a configuration of the group of network units. A renewal of a group key is implemented, where a network unit selected from the group of network units generates a new group key, which is transmitted to network units of the group in an altered configuration. The selected network unit with the network units executes a key exchange according to the Diffie-Hellman principle for transmitting the new key group.