Provider.spec.certSecretRef

CertSecretRef specifies the Secret containing TLS certificates for secure communication. Supported configurations: - CA-only: Server authentication (provide ca.crt only) - mTLS: Mutual authentication (provide ca.crt + tls.crt + tls.key) - Client-only: Client authentication with system CA (provide tls.crt + tls.key only) Legacy keys "caFile", "certFile", "keyFile" are supported but deprecated. Use "ca.crt", "tls.crt", "tls.key" instead.