Minutes Webex 12th May 2014, 6TiSCH Security

Taking notes (using Etherpad)

Discussion on the join process in WirelessHART

René Symmetric is programmed into the device

Michael B: is that the shared network wide secret ?

René : ... <Pascal: I think that means yes>

Tom: Yes, Emerson asked that all devices have a wired interface that is used for that purpose

Max: is the join and key exchange in the clear?

Tom: no, encrypted with symmetric key

Max: then any device that has the symmetric key can read it

René: Yes <Pascal: I think I heard Tom disagree>

René: Single message from untrusted device creates a multihop communication.

René could get a similar result with asym key.

Tom: you still need the network ID in the device when many networks.

Max: An device ID

Tom: taking a device from factory, tag a functional identity in and a network ID, and what have you

Max: touch portion could be alleviated to address scale if policy can allow a device that is not expected.

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