Cryptographic Techniques for Secure IoT Data Transmission

The rapid expansion of the Internet of Things (IoT) has revolutionized industries by enabling interconnected devices to communicate and exchange data seamlessly. However, the transmission of data within IoT networks faces significant security challenges, including vulnerabilities to eavesdropping, man-in-the-middle attacks, and data tampering. This paper explores the role of cryptographic techniques in securing IoT data transmission. It provides an overview of IoT architecture, common communication protocols, and the various security threats that compromise IoT data. The research focuses on cryptographic methods such as symmetric and asymmetric encryption, as well as lightweight cryptography, which are tailored to the resource constraints of IoT devices. Additionally, the paper examines key management protocols and post-quantum cryptography as emerging solutions to future IoT security challenges. Through case studies and performance analysis, the paper highlights the importance of cryptographic techniques in ensuring confidentiality, integrity, and authenticity in IoT data transmission. This research contributes to the understanding of how secure cryptographic solutions can safeguard the evolving landscape of IoT ecosystems.