Because CGVPN is a secure government system used by the Indian Coast Guard (and similar maritime agencies), there is no public academic "paper" on it. However, I have compiled a below that functions as a helpful resource for accessing the system.
: The app will automatically generate a 4-digit or 7-digit PIN code on your TV screen. cgvpn info link login
Instead of hunting CGVPN “info links”: Because CGVPN is a secure government system used
Add auth-user-pass login.txt or type manually on connection. cgvpn info link login