http://www.rfc-editor.org/rfc/rfc2094.txt
RFC 2094: Group Key Management Protocol (GKMP) Architecture, H. Harney, C. Muckenhirn1997-07-01T23:00:00-00:00This specification proposes a protocol to create grouped symmetric keys and distribute them amongst communicating peers. This memo defines an Experimental Protocol for the Internet community.