Cryptography is the practice of securing information 

Cryptogragphy makes data unreadible to outside sources and protects data from unauthorized access and tampering, making it essential for secure communication and system operations. 

We use AES on hardware

AES Encryption: Supports AES-128, AES-192, and AES-256 for secure data encryption and decryption. 

AES encryption secures sensor data by converting it into an unreadable format, ensuring only authorized devices can decrypt it. Its efficiency and low overhead make it ideal for resource-constrained microcontrollers. 

This is securing data at its source - the hardware. Next, securing transmissions for interference to the cloud.