Toll Collect: The German Cashless Project
Toll Collect: The German Cashless Project
Toll Collect: The German Cashless Project
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A. Estiot, <strong>Toll</strong> <strong>Collect</strong><br />
Basics of Communication Security<br />
• A cryptographic concept uses a “codification”<br />
and a key<br />
– 2001: Space Odyssey, Stanley Kubrick:<br />
computer name was “HAL”<br />
(every clever person recognized that<br />
this computer is better than “IBM”)<br />
– You cannot “decrypt” without a key<br />
– Cryptographic operations are generally processed inside secure<br />
cryptographic modules<br />
• Every central and non-central component is equipped with<br />
its own key(s):<br />
– <strong>The</strong> same equipment (OBU for instance) has different keys to talk with<br />
different systems<br />
• Central systems use their own specific „master-keys“:<br />
– With a master-key, a central system can talk to different decentralized<br />
equipment<br />
Master Key<br />
Individual Keys<br />
• Non-central components store and use their keys in smartcards.<br />
13<br />
<strong>The</strong> main areas of the TC Crypto-Concept<br />
Transactions<br />
Software and Network<br />
Updates<br />
600,000<br />
OBUs<br />
Enforcement<br />
Registration<br />
300 gantries<br />
A. Estiot, <strong>Toll</strong> <strong>Collect</strong><br />
1500 Service-<br />
Partners in 14<br />
countries<br />
14<br />
7
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