SLE 4466

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128 bit Identification Area consisting of
16 bit Manufacturer code (mask-programmable ROM)
8 bit Manufacturer data (ROM)
104 bit for personalization data of card issuer (PROM)
-160 bit Value Counter (PROM/EEPROM)
-16 bit secret User Code (EEPROM)
-32 bit either secret Security Code or Data Area 3 in
-Standard User Mode (EEPROM)
-12 bit Data Area 1 (EEPROM)
-32 bit Data Area 2 (EEPROM)
-64 bit Response Counter
-64 bit secret Authentication Key
` 7KUHH&KLSPRGHVZLWKVHFXUHGPHPRU\DFFHVV The memory is secured by different access codes dependent on the mode
Issuer Mode: The memory access is secured by the 4 byte Transport Code
Security User Mode: The memory access is secured by the 4 byte Security Code
Standard User Mode: The memory access is secured by the 2 byte User Code. The verification procedure is fully compatible with SLE 4404 The different chip modes are set by 3 flag bits. Only after a successful code verification the chip logic allows to write or erase the data according to the implemented functionality.
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Three stage abacus counter
Due to testing purposes a maximum of 127040 count units is guaranteed
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64 bit Random number as challenge
64 bit individual secret Authentication Key
Calculation of up to 31 bit response within 60 ms at a clock frequency of 100 kHz
Response calculation with cipher block chaining
Authentication access and response calculation controlled by the Response Counter
Four stage Response Counter with up to 69904 count units (61712 units guaranteed)
Certification of the decreasing of the Value Counter
Signature of the data content