Arqit SKA Edge Controller (SKA-EC) is a hardware and software product developed by Arqit that provides symmetric key agreement at the network edge. It is designed to generate and distribute cryptographic keys to connected devices and systems without relying on traditional public key infrastructure (PKI). The SKA-EC operates by enabling devices to establish shared symmetric encryption keys using Arqit's Symmetric Key Agreement (SKA) protocol. This approach is intended to be resistant to threats posed by quantum computers, as it does not depend on asymmetric cryptographic algorithms that are vulnerable to quantum attacks. The controller is deployed at the network edge, enabling key generation and distribution closer to endpoints and IoT/OT devices. It is aimed at environments where low-latency, secure key exchange is required, such as critical infrastructure, telecommunications, and enterprise networks. Key aspects of the SKA-EC include: - Symmetric key generation and distribution at the edge - Quantum-safe cryptographic architecture - Support for connected devices and endpoints - Designed for deployment in constrained or distributed network environments - Reduces dependency on certificate-based PKI systems The product is part of Arqit's broader QuantumCloud platform ecosystem, which provides quantum-safe encryption-as-a-service. The SKA-EC extends this capability to local, edge-based deployments where cloud connectivity may be limited or latency-sensitive operations are required.