usermanagerhelper

Keychain certificate validator — verifies digital signatures and manages credential validation

Validates certificates and cryptographic signatures for code-signed applications and system components. Accesses the system Keychain to retrieve and verify certificates, checking their validity, chain of trust, and revocation status. Exposes an XPC service for other processes to request signature verification and certificate validation. Connects to external endpoints for certificate revocation checks and validation services. Operates with entitlements to read Keychain items and perform security-related cryptographic operations.AI