system/security/keystore/key_store_service.cpp:949:30: error: no member named 'Union' in 'keymaster::AuthorizationSet'
    persistedCharacteristics.Union(characteristics.get()->sw_enforced);
    ~~~~~~~~~~~~~~~~~~~~~~~~ ^
system/security/keystore/key_store_service.cpp:950:30: error: no member named 'Difference' in 'keymaster::AuthorizationSet'
    persistedCharacteristics.Difference(characteristics.get()->hw_enforced);
    ~~~~~~~~~~~~~~~~~~~~~~~~ ^
2 errors generated.