A robust Public Key Infrastructure (PKI) tailored for the Internet of Things (IoT) represents a critical component in ensuring the security and integrity of interconnected devices in our increasingly digitized world. By leveraging both commodity hardware and cloud infrastructure, such a PKI solution can offer scalability, flexibility, and accessibility to a wide array of IoT applications and deployments. At its core, this PKI system would facilitate the secure exchange of data and communication between IoT devices, enabling authentication, encryption, and integrity verification. With the proliferation of IoT devices across various industries and domains, ranging from smart homes to industrial automation, the need for a scalable and adaptable security framework becomes paramount. By incorporating commodity hardware, such as low-cost microcontrollers and sensors, alongside cloud-based services, this PKI can cater to the diverse requirements of IoT deployments, whether they are constrained by resource limitations or demand high computational power for cryptographic operations.