The purpose of the BOF is to discuss the need for a working group to develop data representations and protocols that allow entities in different organizations to express and negotiate the conditions under which they will communicate for various network services.  The conditions are expected to include security-related mechanisms for authentication and integrity; the representations and protocols for accomplishing the negotiation are themselves security relevant and may be the subject of analysis.  The output of such a working group would be related to GSSAPI, IPSEC and IPSECOND, public key working groups, and DNSSEC; the BOF will explore whether or not the policy expression and negotiation are distinct enough from activities in the other groups to warrant the formation of a new WG.