Does the WGL add a security level to the exchanges (authentication) or does it rely on the common GPRS security policy?
The WGL system does not rely on GPRS security. Flight data is compressed and encrypted using proprietary technology. The compression is loss-less and can achieve anything from 4 to 1 or 20 to 1 depending on the aircraft type and data frame. The encryption technology was developed by a Teledyne sister company for a US government program and is not public information, as is the case with many other encryption algorithms. Additionally, there are further security measures provided for data packets transmitted in parallel across multiple cell device connections and in a random sequence. There is companion software provided with the Ground Server which enables automated decryption and decompression and seamless integration into the Ground Data Replay & Analysis Server (such as Teledyne/Airbus’ AirFASE system).
