Submission 8: Comments on "Distributed Symmetric Key Management for Mobile Ad hoc Networks" from INFOCOM 2004

In IEEE INFOCOM 2004, Chan proposed a distributed key management
scheme for mobile ad hoc networks, and deduced the condition under
which the key sets distributed to the network nodes can form a
cover-free family (CFF), which is the precondition that the scheme
can work. In this paper, we indicate that the condition is falsely
deduced. Furthermore, we discuss whether CFF is capable for key
distributions in ad hoc networks.