SafeLink: End to End Privacy & Integrity for Data Transfer in IoT Applications

In an era dominated by the Internet of Things (IoT) and ubiquitous connectivity, the demand for securing sensitive data, especially in surveillance systems, is paramount. This paper introduces a novel approach to enhancing security through the deployment of a lightweight cryptographic algorithm. The algorithm is specifically designed for resource-constrained environments, exemplified by its successful implementation on the Raspberry Pi platform.The proposed cryptographic solution not only ensures the confidentiality of transmitted data but also addresses the resource limitations inherent in edge devices. Focusing on image encryption in surveillance systems, our hybrid lightweight cryptographic algorithm operates seamlessly on the Raspberry Pi, demonstrating its adaptability to low-resource environments.The process begins with the capture of images, followed by their secure storage and processing on the Raspberry Pi. Subsequently, the images are encrypted, and the encrypted files are transmitted over the network. Notably, the security is fortified by incorporating a hash value that accompanies the encrypted file during transmission. At the receiving end, the integrity of the received file is verified by comparing the transmitted hash value with the computed hash value, allowing for the rejection of any tampered or compromised data.This research contributes a holistic solution to the challenges posed by resource constraints in edge computing devices, offering a secure and efficient method for image transmission in surveillance systems. The presented hybrid lightweight cryptographic algorithm not only fortifies the confidentiality of data but also ensures the integrity of transmitted information, making it a valuable addition to the evolving landscape of secure IoT applications.