This repository contains the source code, hardware designs, and 3D enclosure models for the graduation project "Design and Implementation of Encryption-Supported Vehicle Keyless Entry Systems" submitted to Izmir Democracy University, Faculty of Engineering, Department of Electrical and Electronics Engineering in 2025.
Authors:
This thesis addresses the security vulnerabilities in conventional vehicle keyless entry systems by developing and implementing two distinct, encryption-supported solutions:
- RF/RFID Hybrid System: Enhances traditional 433 MHz Radio Frequency (RF) technology with Radio Frequency Identification (RFID) for proximity-based ignition authorization and integrates Advanced Encryption Standard (AES) for secure communication.
- Bluetooth Low Energy (BLE) System: Utilizes modern BLE technology for secure, smartphone-based vehicle access control via a custom mobile application and a dedicated key fob, also secured with AES and Hopping Code algorithms.
Both systems were developed as low-cost, fully functional prototypes, demonstrating significant advancements over standard keyless entry systems in terms of security and usability.
This repository is organized as follows:
3D_Enclosure_Designs/: Contains the 3D models for the custom key fob enclosures, designed in Tinkercad. These files are ready for 3D printing.MIT_AES_Combined_Button.ino: Arduino source code for the BLE system's key fob transmitter, including AES encryption and button-based control.MIT_AES_Combined_Servo.ino: Arduino source code for the BLE system's vehicle receiver, handling BLE communication, AES decryption, and servo motor control.RF-RFID_System_final.fzz: Fritzing design file for the physical layout of the RF/RFID system prototype. This visualizes the circuit assembly.RX_RF_RFID_AES_combined.ino: Arduino source code for the RF/RFID system's vehicle receiver, managing RF/RFID communication, AES decryption, and servo motor control.Smart Car Control.apk: The Android application package (APK) for the custom mobile application used with the BLE system.TX_AES.ino: Arduino source code for the RF/RFID system's key fob transmitter, incorporating AES encryption.
- Enhanced Security: Implementation of AES encryption and Hopping Code algorithms to prevent replay attacks and ensure secure communication.
- Dual System Design: Two distinct prototypes (RF/RFID and BLE) offer versatile solutions for keyless entry.
- Proximity-Based Ignition (RF/RFID): Utilizes RFID for an additional layer of security, requiring proximity for vehicle ignition.
- Smartphone Integration (BLE): A custom Android mobile application for convenient vehicle control via Bluetooth.
- Physical Prototypes: Includes designs for 3D-printed enclosures for practical and portable key fobs.