Method for misbehaviour detection in secure wireless mesh networks

A node in a wireless mesh network comprising a sending node sending at least one packet to at least one forwarding node, the at least one forwarding node receiving the at least one packet from the sending node and forwarding the at least one packet to one or more receiving nodes, and a destination node receiving the at least one packet from the at least one receiving node,

• wherein the node, being a challenging node, comprises:
• a transmitter for transmitting a challenge to the at least one forwarding node causing the at least one forwarding node, being a challenged node, to reply both to the challenging node and the at least one receiving node with a response, wherein both the response for the sending node and the response for the at least one receiving node include the same transformed information about one or more of the at least one packet/packets which has/have been sent form the challenging node to the destination node via the at least one forwarding node and the at least one receiving node, and
• a processor for processing the response to determine whether the at least one forwarding node is misbehaving or not by verifying whether the transformed information received in the response from the at least one forwarding node is equal to an information which can be or has been derived from the requested packet/packets, wherein the same transformed information is similarly used by the at least one receiving node to determine whether the at least one forwarding node is misbehaving or not,
• wherein the transformed information is a hash sum for the requested packet/packets in the challenge, and wherein the node comprises further means for generating the hash sum by a logic operation from hash values of respective packets.

A node in a wireless mesh network comprising a sending node sending at least one packet to at least one forwarding node, the at least one forwarding node receiving the at least one packet from the sending node and forwarding the at least one packet to one or more receiving nodes, and a destination node receiving the at least one packet from the at least one receiving node,

• wherein the node, being a challenged node, comprises a computer program stored in non-transitory media and executable to:
• receive a challenge from the sending node, being a challenging node, and
• in response to receiving the challenge:
• generate a response for each of the sending node and the at least one receiving node, wherein both the response for the sending node and the response for the at least one receiving node include transformed information about one or more of the at least one packet which have been sent form the sending node to the destination node via the at least one forwarding node and the at least one receiving node, and
• transmit the respective responses to the sending node and the at least one receiving node, such that both the sending node and the at least one receiving node are able to determine whether the node is misbehaving or not based at least on the same transformed information received from the node,
• wherein the transformed information is a hash sum for the requested packet/packets in the challenge, and wherein the node comprises further means for generating the hash sum by a logic operation from hash values of respective packets.