As IoT devices increasingly exchange sensitive data over wireless networks, they become vulnerable to eavesdropping, tampering, and unauthorized access. Many IoT implementations transmit plain-text data, making them easy targets for interception. There is a critical need for built-in data encryption to ensure confidentiality and integrity, especially in Wi-Fi–based IoT systems.
This project demonstrates an IoT Security System using AES (Advanced Encryption Standard) implemented on IndusBoard Coin. AES encryption converts readable data into encrypted ciphertext before transmission, ensuring that only authorized devices with the correct key can decrypt it. The project is implemented in two stages: a standalone AES encryption demo and an encrypted IoT sender–receiver system with a web interface, both showcasing secure data handling over Wi-Fi.
Key Features
- AES-based encryption for secure IoT data transmission
- Supports both AES-256 (standalone demo) and AES-128 (IoT communication)
- Uses symmetric encryption for fast and efficient processing
- Encrypts data before Wi-Fi transmission, preventing plain-text exposure
- Web-based UI for entering, encrypting, and transmitting messages
- Decryption performed only by authorized receiver with shared key
- Operates in Wi-Fi Access Point (AP) or Station (STA) mode
- Demonstrates real-time encryption and decryption via Serial Monitor
- Built on open, software-based AES implementation using mbedTLS
Applications
- Secure IoT sensor data transmission
- Encrypted communication between IoT nodes
- Smart home and industrial IoT security
- Educational demonstrations of cryptography in embedded systems
- Prototyping secure wireless IoT products
- Foundations for advanced security systems using encryption and secure key management
This AES-based IoT security project highlights how strong encryption can be seamlessly integrated into compact IoT systems using IndusBoard Coin. By demonstrating both standalone encryption and real-time encrypted communication with a web interface, the project provides a practical foundation for building secure, tamper-resistant IoT applications, reinforcing the importance of encryption in today’s connected world.