thephpleague/oauth2-server

Features

• OAuth 2.0 Authorization Servers - Implements a full OAuth 2.0 authorization server for managing client registrations and issuing access tokens.
• Authorization Store Backends - Provides the necessary data interfaces and backends for persisting clients, users, and tokens.
• OAuth2-Secured REST APIs - Implements a security layer to protect REST API endpoints using OAuth2 token authentication.
• Request Token Validators - Validates tokens on every incoming request to enforce access control and identify users.
• OAuth Token Refreshes - Controls the creation and validity period of refresh tokens to enable long-lived user sessions.
• API Access Control - Ensures only authorized users and clients can access specific API endpoints by verifying bearer tokens.
• Signed JWT Generation - Generates compact signed JSON Web Tokens using private keys for secure distribution.
• Authentication Frameworks - Provides a secure framework for managing user identities and client authorizations in PHP environments.
• Authorization Code Exchanges - Verifies authorization codes and client credentials to issue signed access and encrypted refresh tokens.
• Authorization Code Issuances - Validates client requests and user approvals to create temporary codes exchangeable for tokens.
• OAuth Client Secret Validators - Verifies OAuth client secrets at the token endpoint to authenticate requesting applications.
• Grant Type Validations - Validates client and user credentials across various grant flows to ensure secure API access.
• User Identity Verification - Verifies user credentials against a data store to authorize specific grant requests.
• Token Lifecycle Management - Implements a complete system for issuing, revoking, and tracking the expiration of access tokens.
• OAuth Grant Type Handlers - Routes authorization requests through specific grant handlers to validate credentials and issue tokens.
• Refresh Token Grants - Implements the grant flow to exchange a valid refresh token for a new access token.
• Token Signing Services - Signs and encrypts digital tokens using asymmetric keys to verify authenticity across distributed services.
• Token Signing Operations - Implements cryptographic signatures on tokens using private keys to ensure authenticity and integrity across services.
• Authorization Code Management - Manages the lifecycle of short-lived authorization codes used to exchange for access tokens.
• Repository Patterns - Uses the repository pattern to decouple domain logic from specific database implementations.
• Entity Interfaces - Defines strict contracts for authorization entities to maintain consistent data structures across various storage backends.
• Redirect URI Attestations - Verifies redirect URIs against established standards to prevent open redirect vulnerabilities.
• OAuth Scope Management - Sets default and final permission scopes for clients using refresh tokens to control access levels.
• Refresh Token Rotation - Implements refresh token rotation by issuing new tokens and revoking old ones during each refresh cycle.
• Device Authentication Flows - Implements the OAuth 2.0 device authorization grant for hardware with limited input capabilities.
• API and Machine Authentication - Implements non-interactive authentication flows for automated service-to-service communication.
• PKCE Authorization Flows - Enforces Proof Key for Code Exchange to prevent authorization code interception for public clients.
• Scope Validations - Verifies if requested OAuth scopes are legitimate and modifies them based on user permissions.
• Public Clients - Permits non-confidential public clients to use authorization grants without requiring client secrets.
• JWT Token Validators - Verifies JWT authenticity and expiration including configurable time drift leeway for unsynchronized clocks.
• Single Sign-On - Provides a unified authentication system using signed tokens to maintain sessions across multiple services.
• Symmetric Encryption - Employs symmetric encryption to protect authorization codes and refresh tokens from tampering.
• Authorization Code Encryption - Protects sensitive authorization codes using symmetric encryption to prevent tampering and data exposure.
• Device Grant Implementations - Provides a device authorization grant for hardware that cannot host a web browser for login.
• Third-Party Platform Authorizations - Enables external applications to securely access user data via standardized authorization codes and redirects.

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