A fill device or key loader is a module used to load cryptographic keys into electronic encryption machines. Fill devices are usually hand held and electronic ones are battery operated.
The KYK-13 Electronic Transfer Device is a common fill device designed by the United States National Security Agency for the transfer and loading of cryptographic keys with their corresponding check w
Fill device
…KYK-28 pin gun used with the NESTOR (encryption) system KYK-13 Electronic Transfer Device KYX-15 Net Control Device…