sfltool

Code signing and certificate validation — verifies and manages code signatures and certificates

Validates code signatures, manages certificates, and enforces code signing policies as a Security framework extension. Accesses Keychain to retrieve and validate certificates for authentication and trust evaluation. Communicates with Apple's certificate validation services via four network endpoints to check certificate revocation and obtain trust anchors. Exposes two XPC services for other system components to request signature and certificate validation operations. Handles 16 bundle identifiers, indicating integration with multiple macOS subsystems that require code signing verification.AI