Tell me about Keycloak the open source package [Keycloak.org](https://www.keycloak.org/) is an open-source identity and access management (IAM) solution developed by Red Hat. It provides capabilities for user authentication, authorization, and federation in modern applications and services. Keycloak allows you to secure your applications by providing a centralized authentication server. It supports various authentication mechanisms like username/password, social logins (e.g., Google, Facebook), single sign-on (SSO), and multi-factor authentication (MFA). With Keycloak, users can log in once and gain access to multiple applications without the need to authenticate separately for each application. Some key features of Keycloak include: 1. User Federation: Keycloak can integrate with existing user directories such as LDAP or Active Directory, allowing you to leverage your existing user base without duplicating efforts. 2. Authorization and Permissions: Keycloak provides fine-grained authorization controls through its policy-based access control system. You can define roles, permissions, and policies to control who can access specific resources or perform certain actions. 3. Social Identity Providers: Keycloak makes it easy to integrate with popular social media platforms for authentication purposes. This allows users to log in using their existing social media accounts like Google or Facebook. 4. Single Sign-On (SSO): With SSO support, users only need to authenticate once with Keycloak and gain access to multiple applications seamlessly without re-entering credentials. 5. Multi-Factor Authentication (MFA): Keycloak offers MFA options like one-time passwords (OTP), email verification codes, or other custom methods to enhance security beyond traditional username/password combinations. 6. Client Libraries and Adapters: Keycloak provides client libraries and adapters for various programming languages/frameworks such as Java, JavaScript/Node.js, PHP, Python, etc., making it easier to integrate with your applications. 7. Open Standards Support: Keycloak supports industry-standard protocols like OAuth 2.0, OpenID Connect (OIDC), Security Assertion Markup Language (SAML), and more, enabling seamless integration with different platforms and frameworks. Keycloak can be deployed as a standalone server or embedded within your application. It offers a web-based admin console for managing users, roles, clients, and other configurations. # Passkey Preview Support Keycloak **has preview support for Passkeys as of version 23.0.0, released in November 2023**. This means that users of Keycloak can register and authenticate using Passkeys, but it's still considered an experimental feature and might not be fully optimized or stable for production use. Here's a breakdown of Keycloak's Passkey support: **Capabilities:** - **Passkey registration:** Users can register Passkeys on their devices through Keycloak, linking them to their accounts. - **Passkey authentication:** Users can authenticate to Keycloak applications using their registered Passkeys, eliminating the need for passwords. - **Supported Passkey types:** Keycloak currently supports both **synced Passkeys** stored on trusted devices and **device-bound Passkeys** restricted to the specific device they were created on. - **Same-Device and Cross-Device Authentication:** Both types of Passkeys can be used for authentication on the same device they were registered on or across different devices depending on their capabilities. **Limitations:** - **Preview status:** As mentioned, Passkey support is still in preview and might not be as mature or reliable as other Keycloak features. - **Device compatibility:** Passkey functionality depends on the user's device and browser support. Not all devices and browsers currently support Passkeys. - **Limited documentation and community support:** Due to its recent introduction, documentation and community support for Passkey features in Keycloak might be limited compared to older features. **Overall:** While Keycloak's Passkey support is promising and opens up possibilities for passwordless authentication, it's still in development and not yet suitable for mission-critical applications. If you're interested in using Passkeys with Keycloak, consider testing it in a non-production environment and keeping up with future updates and improvements. # Conclusion Overall, Keycloak simplifies the implementation of IAM features in your applications by providing an open-source solution that is extensible, secure, and highly customizable. # References ```dataview Table title as Title, authors as Authors where contains(subject, "Keycloak") or contains(subject, "IAM") ```