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Integrated scheme produced by Infineon Company - "token card" with active authentication and data loss security function.
- Unique 8 byte unalterable serial number
- 10 bytes of PROM for additional information (in case of using two authentification keys - 2 bytes)
- Calculation of a 16 bit response within 30ms at a clock frequency of 100kHz
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- Counter with up to 32767count units, which can only decrease. Card "recharging" is impossible.
- Counter tearing protection: backup feature activated at choice
- Synchronous transmission, 5-wire link protocol, bit-oriented addressing
- Protection against cloning, fraud, unauthorized emission by one or two 48bit secret keys (active authentication)
- Proprietary active authentication algorithm (protection against emulation)
Cloning protection is a very important benefit of "eurochips" against other token cards that allows uniting demands of low price and high security.
"Eurochips" uses in Petrol Plus system as non-appendable prepaid cards for any service or product (example: 300 gallons of petrol). Such cards are not assigned to exact card holder and can be negotiated by card issuers.
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SLE 5536 
