Athenz is an open-source, fine-grained authorization and identity management platform designed for zero-trust environments. It provides centralized (ZMS) and decentralized (ZTS) services for issuing short-lived X.509 certificates, managing role-based access control (RBAC), and enforcing policies across multi-cloud and on-premise infrastructures. The system supports AWS, GCP, Azure, and Kubernetes workloads through pluggable attestation validators and credential providers, enabling service-to-service authentication and authorization without shared secrets. Architecturally, Athenz comprises three core servers: ZMS (management service for domains, roles, policies), ZTS (token service for certificates, OAuth2 tokens, SSH certs), and MSD (micro-segmentation for network policy management). A React/Next.js UI provides administrative management, while client libraries in Java, Go, and Node.js enable integration. The codebase is organized into modular Maven submodules with RDL-generated data models, extensive unit/integration tests, and Docker/Kubernetes deployment artifacts. Key patterns include factory-based dependency injection (e.g., cert signers, private key stores, notification services), dynamic configuration reloading, and composite validators for cloud attestation. This is a production-grade application with clean abstractions, well-defined interfaces, and significant test coverage. While the codebase contains some generated boilerplate and cloud-specific implementations that may drift, the core libraries and utility classes are reusable and demonstrate strong engineering practices.
This is a Go library implementing the SPIFFE Workload API for workload identity management and secure communication. It provides client libraries to fetch X.509-SVIDs, JWT-SVIDs, and trust bundles from a Workload API agent (typically SPIRE). The library offers high-level TLS dial/listen functions (spiffetls) with various authentication modes (mTLS, TLS with JWT), supporting both Unix sockets and Windows named pipes. Core packages include spiffeid (SPIFFE ID parsing and matching), svid (SVID parsing and validation), bundle (trust bundle management), workloadapi (Workload API client and credential source watchers), and federation (remote trust domain bundle fetching). The architecture is modular with clear interfaces (Source, Authorizer, Logger, Backoff) that allow swapping backends. The code is well-tested with extensive unit tests and integration test helpers. Experimental features include WIT-SVIDs and a Broker API. This library is a critical component for any workload that needs SPIFFE-based identity in a zero-trust environment.