The present invention relates to the requirement of security in an ad hoc network. More particularly it relates to the problem within ad hoc networks, not having on-line connections to a particular server for getting desired public keys or certificates, required to create trust relations. Within an ad hoc communication network, some of the nodes have a mutual trust relation to each other, thus constituting a trust group. An additional node within the network is being a candidate node for joining the trust group. An X-node is identified, being a member of a trust group and having a trust relation with the candidate node. The X-node distributes trust relations between the members of the trust group and the candidate node. |