Group Key Management

Group Key Management (GKM) provides key management for groups consisting of three or more entities sharing the same key material; GKM methods can be broadly classified as either contributory (e.g., CLIQUES), where group members use the Group Diffie-Hellman Algorithm to independently derive group keying material, or centralized (e.g., RFC 3547 (GDOI)), where group members register with a trusted third party (group controller/key server) and are given group keying material.