kSecCSSignOpaque = 1 << 3, // treat all files as resources (no nest scan, no flexibility)
kSecCSSignV1 = 1 << 4, // sign ONLY in V1 form
kSecCSSignNoV1 = 1 << 5, // do not include V1 form
+ kSecCSSignBundleRoot = 1 << 6, // include files in bundle root
+ kSecCSSignStrictPreflight = 1 << 7, // fail signing operation if signature would fail strict validation
};