Keyrock is FIWARE’s identity and access management (IAM) component, providing OAuth 2.0-based authentication for users and devices. It manages user accounts, roles, permissions, and supports Single Sign-On (SSO) and federated identity across services. Keyrock integrates with other FIWARE security components like Wilma (PEP Proxy) and AuthzForce (PDP) to enforce end-to-end access control. Built with Node.js and Express, Keyrock exposes REST APIs and includes a web-based user interface for managing organizations, users, and applications within smart system architectures.