pub unsafe extern "C" fn SecKeyCreateSignature(
key: SecKeyRef,
algorithm: SecKeyAlgorithm,
dataToSign: CFDataRef,
error: *mut CFErrorRef,
) -> CFDataRef
pub unsafe extern "C" fn SecKeyCreateSignature(
key: SecKeyRef,
algorithm: SecKeyAlgorithm,
dataToSign: CFDataRef,
error: *mut CFErrorRef,
) -> CFDataRef