In today’s digitally connected world, edge devices such as smartphones, tablets, wearables, and IoT devices have become an essential part of our day-to-day life. These devices facilitate seamless connectivity and enable us to access information and services at our fingertips. However, this convenience comes at a cost - the potential compromise of sensitive data due to security vulnerabilities. Edge device security has become a significant concern, and one of the solutions to address these concerns is the utilization of cryptography algorithms. With the rapid proliferation of edge devices in today’s interconnected world, the basic for strong and efficient safety mechanisms has become paramount. One such mechanism is the symmetric key algorithm, which plays a vital role in securing edge devices and safeguarding critical data. A device-based authentication algorithm that saves energy and enables secure communication within the edge devices is crucial for verifying device identity and ensuring device security. This article explores a new energy-saving authentication protocol based on integers and modulo 37 called SSK (simple symmetric key algorithm). This new authentication protocol is easy to implement and is particularly suitable for edge devices on the Internet of Things that require energy savings and potential security. Additionally, this article discusses the implementation of SSK algorithms, edge device security, their functionality, and potential use cases.