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Re: Important Information about IETF 76 Meeting Registration

2009-09-11 06:56:52


Eric Rescorla wrote:

Can you clarify what, if any, the security properties of this system
are:

In particular:

1. Will the RFID tag in question respond to any reader or just those
   controlled by the secretariat?
2. Is the information on the tag in the clear or encrypted?

normal 125khz tags don't contain much data. The radio equivalent of a 1
dimensional barcode is just a serial number. any data is a product of
association with that token stays in the network rather than the chip.
These are vulnerable to (trivial) replay attacks. but challenge response
requires more logic. more powerful card systems of course exist in
profusion it's just a matter of picking one.


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