Infineon NRG™ SLE 66R35 Card

NRG™ SLE 66R35x

The NRG™ SLE 66R35x offering is suited for the use in multi-application schemes, for example combining a transportation fare collection scheme and a ticketing system such as a stadium ticketing. Both applications can be performed with the same card, as hierarchical key management is supported.

The RF communication interface transmits at 106 kbit/s resulting in short transaction times, the effect being that a card user can move freely through a reader gate with minimum disruption. A typical ticketing transaction can be handled in less than 100 ms. Robust contactless transmission means that the card with SLE 66R35x may also remain in the wallet of the user even if there are coins in it.

Security Features

Access to SLE 66R35x is only allowed after a three-pass authentication. For SLE 66R35E7 the serial number is unique for each card and cannot be changed. Each data transmission is enciphered. Protection from misuse is done by configurable access conditions that are protected by secret keys used for memory operations such as read or write.

SLE 66R35I: 4-byte, fixed number, non unique IDentifier (FNUID)
SLE 66R35R 4-byte fixed reused IDentifier (r-ID)
SLE 66R35E7 7-byte Unique IDentifier (UID)

Infineon NRG SLE 66R35 Card

Contactless Interface

Physical Interface and Anticollision compliant to ISO/IEC 14443-2 and -3 Type A

– Operating frequency 13.56 MHz; data rate 106 kbit/s

– Contactless transmission of data and supply energy

– Anticollision logic: several cards may be operated in the field simultaneously

Read and write distance up to 10 cm and more (influenced by external circuitry i.e. reader and inlay design)
Short transaction times: Typical ticketing transaction < 100 ms; transaction possible when card is moving

1 kByte EEPROM

Block organization of memory, 16 sectors with fixed 4 blocks of 16 bytes each
EEPROM updating time per block less than 4 ms
Endurance > 100,000 erase / write cycles (values are temperature dependent)
Data retention > 10 years
User definable access condition for each memory block

Security Features

SLE66R35I: 4-byte fixed non unique number (FNUID)
SLE66R35R: 4-byte fixed reused identity number (r-ID), 4-byte UID previously issued
SLE 66R35E7: 7-byte Unique IDentification number (UID). Support of 4-byte Random Number (RND-ID) and 4-byte fixed non-unique number (FNUID) according to ISO/IEC 14443-3 Type A
Mutual three-pass authentication between card and reader for basic security

– 48-bit key length

– 2 keys per sector enabling key management

– Transport key at chip delivery

Selective memory access secured by authentication and access conditions
Suited to multifunctional applications: individual key sets for each EEPROM sector
Data encryption for RF channel
Dedicated Value Counter
Data integrity supported by CRC, Parity Check, etc.