Verification of Devices Connected to Aircraft Data Processing Systems

A system and method for allowing access to an aircraft network data processing system on an aircraft. A data processing device receives an expected measurement of software on the data processing device. The expected measurement is generated by a device other than the data processing device. The data processing device identifies an actual measurement of the software on the data processing device. The data processing device is connected to the aircraft network data processing system on an aircraft. The expected measurement and the actual measurement are sent from the data processing device to the aircraft network data processing system to determine whether the data processing device is allowed to access the aircraft network data processing system. The data processing device accesses the aircraft network data processing system in response to a determination that the data processing device is allowed to access the aircraft network data processing system.