Fourthly, concerning the subliminal-based approach, the vehicular cryptomaterial (i.e., public/private keypairs) is generated by the certification authority.
As explained in Section 2.2, it is possible because the vehicular cryptomaterial is known by the certification Authority, so the vehicle (sender) private key is already known by this entity.
Foreign Military Sales NAC51-6002 Nat'l COMSEC Instruction of COMSEC Articles & Services to Protection of Gov't Contractor Foreign Governments & International Telecomm's Orgs NCSC-5, Nat'l policy on Use of DoDD 4640.13 Mgmt of Base & Long
Cryptomaterial by Activities Haul Telecomm's Equipment & Operating in High Risk Services Envirenments DoDD 8100.02 Commercial WLAN DoDI 4650.1 Policy & Procedures for Devices.