Cypherbridge Systems' 802.1X SDK is a portable enterprise software library designed for IoT, Edge, and Gateway systems. It implements IEEE 802.1X EAPOL, EAP, and EAP-TLS mutual authentication, as well as 802.1AE MACsec. The SDK provides LAN layer 2 port-based authentication for enterprise or automotive network switches using RADIUS. It is integrated with Cypherbridge SDKPac uTLS™ and uCrypt™ Software Development Kits, supporting the 802.1X-2020 standard. The SDK is interoperable with enterprise network equipment from manufacturers like Cisco, Juniper, and NETGEAR, making it suitable for use in sectors such as energy, healthcare, industrial control, financial systems, and manufacturing. It enables secure OT and IT system integration for IoT devices.