3.1.3 Initialization
If a node is connecting to an existing group, it MUST:
Have a self-signed [RFC2459] IDC using the public/private key pair of the Peer Identity (as described in section 1.5). This is the Local IDC.
Generate a Peer Name from the Local IDC (as specified in [MS-PNRP] section 2.2.4), using an application-provided classifier.
If a node is creating a new group, in addition to the initialization in the preceding paragraph, it MUST:
Create a self-signed [RFC2459] GRC using the public/private key pair of the Group Peer Identity (as described in section 1.5, Prerequisites). This is the GRC of the new group.
Generate a Peer Name from the GRC (as specified in [MS-PNRP] section 2.2.4), using an application-provided classifier. This will be the Group Peer Name.
Create a GMC chain from the GRC and the Local IDC, as defined in section 3.1.7.5.