certtool

Code signing utility — verifies and manages cryptographic signatures on executables

Validates code signatures on macOS binaries and frameworks using cryptographic certificates from the Keychain. Verifies signature integrity, checks certificate validity, and confirms code identity claims. Accesses the system Keychain to retrieve and manage signing certificates and keys. Communicates with Apple's certificate validation and revocation services via network endpoints. Handles telemetry reporting for code signing events and operations.AI