Current problems in alarm maintenance construction for spoofing resistant communications systems

The paper analyzes construction of alarm maintenance based on PSK signals used in spoofing resistant systems of transferring information with restricted access. The paper shows the main limitations of the applied alarm maintenance, which result in failure to provide protection of messages against decoding in case when a malefactor uses modern means of investigating and processing restricted access information. Based on the conclusions received, there are defined the requirements to alarm maintenance making it possible to avoid disclosure of the code dictionary used in privacy communications systems.