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Diffstat (limited to '2005/rfid-lk2005/brainstorm.txt')
| -rw-r--r-- | 2005/rfid-lk2005/brainstorm.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/2005/rfid-lk2005/brainstorm.txt b/2005/rfid-lk2005/brainstorm.txt new file mode 100644 index 0000000..07074e3 --- /dev/null +++ b/2005/rfid-lk2005/brainstorm.txt @@ -0,0 +1,33 @@ +- RFID confusion + - passive 1-bit tags + - ro/rw memory + - state machines for permission checking + - contactless smartcards (processor chip cards, ...) + +- processor chip cards + - typically 8bit micrprocessor (e.g. 8051 based) + - MMU (!) + - typical configuration: 1k RAM, 32k Flash, 70k mask ROM + + +- ISO 14443 "proximity cards" + - 14443-1 (physical specification) + - 13.56 MHz + - 14443-2 (radio interface) + - power transmission from reder (PCD) to card (PICC) + - 13.56MHz +- 7kHz + - field strength 1.5A/m to 7.5A/m (rms) + - channel from reader to card + - Type A: carrier modulation with 100% ASK, modified miller code + - Type B: carrier modulation with 10% ASK, NRZ-L code + - channel from card to reader + - Type A: load modulation on subcarrier fc/16, OOK, manchester code + - Type B: load modulation on subcarrier fc/16, BPSK, NRZ-L code + - 14443-3 (anti collision) + - + + +- biometric passport + - technical view + - iso 7816-4 command based processor chip card + - iso 14443-{1,2,3,4} based RFID interface |