Security terminal system capable of performing high-speed security processing

A security terminal system installed inside a vehicle to perform high-speed security processing required for V2X (Vehicle to Everything) communication, the security terminal system comprising:

• an RF (Radio Frequency) module configured to perform wireless communication with an outside;
• a modem configured to modulate/demodulate data to be transmitted and received through the RF module;
• an AP (Application Processor) connected to the modem to process processes related to transmission and reception and security of the data used for the V2X communication;
• a first encryption processing module configured to perform a first security operation on a data packet received from the AP through a serial communication scheme to transmit the processed data packet to the AP;
• and
• a second encryption processing module including one or more processors and one or more memories and configured to perform a second security operation that is not performed by the first encryption processing module on the received data packet,
• wherein the first encryption processing module includes:
• a first encryption engine unit including a plurality of encryption engines configured to perform the first security operation on the received data packet according to each encryption algorithm;
• and
• a command processing unit configured to interpret a request received at the first encryption processing module, input the request to a related encryption engine based on an interpretation result, and generate a response packet based on an execution result of the first security operation performed by the encryption engine,
• wherein the encryption engines and the command processing unit are implemented in hardware, and
• wherein the AP, the first encryption processing module, and the second encryption processing module are connected in series, and
• the AP and the first encryption processing module perform continuous asynchronous communication through:
• a first serial communication cable supporting only unidirectional communication in a direction from the AP to the first encryption processing module;
• and
• a second serial communication cable that is independent of the first serial communication cable and supports only unidirectional communication in a direction from the first encryption processing module to the AP.