System for securing communication between central controller and signaling devices in traffic signaling networks

A system for securing communication between a Central Controller and a plurality of signaling devices in railway or road traffic signaling networks, the Central Controller comprising a relay rack or an object controller, which comprises at least one input relay and at least one output relay associated with each of the plurality of signaling devices, the system comprising a first secure communication module (SCM1) having a unique address identifier, operatively coupled to the relay rack or the object controller, and together housed in a secure control facility;

• at least one second secure communication module (SCM2) each having a unique address identifier, wherein each of the at least one SCM2 is integrated with a corresponding signaling device and housed together to form a corresponding secure signaling device assembly;
• a physical communication link configured to establish a communication between the SCM1 and each of the at least one SCM2;
• and a digital communication protocol, implemented between the SCM1 and the at least one SCM2 via the physical communication link, wherein the SCM1 and the at least one SCM2 establish a secure communication link between the relay rack or the object controller on one side and the plurality of signaling devices on other side and the digital communication protocol is configured to communicate relay status control commands or status information from the one side to the other side, wherein a secure transmission is performed by way of authentication using the unique address identifier of the SCM1 and the at least one SCM2 as per the digital communication protocol, and the secure communication link comprising the SCM1 and the at least one SCM2 is transparent to the Central Controller on the one side and the plurality of signaling devices on the other side.