OAuth 2.0
OAuth 2.0 is an authorization protocol that allows applications to request limited access to user resources without sharing passwords. It operates via access tokens, enabling secure delegation of permissions. OAuth 2.0 supports multiple grant types like Authorization Code Flow and Client Credentials Flow, making it ideal for web, mobile, and API security. Keycloak implements OAuth 2.0 for SSO, access control, and API protection, supporting OpenID Connect (OIDC), User-Managed Access (UMA), and PKCE for enhanced security. It is widely used in modern authentication frameworks.
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