Enter an ATR (Answer To Reset) and I will parse it for you.
Parsing ATR:
| TS = 0x3B | Direct Convention |
|---|---|
| T0 = 0xD6 | Y(1): b1101, K: 6 (historical bytes) |
| TA(1) = 0x97 | Fi=512, Di=64, 8 cycles/ETU (500000 bits/s at 4.00 MHz, 625000 bits/s for fMax=5 MHz) |
| TC(1) = 0x00 | Extra guard time: 0 |
| TD(1) = 0x81 | Y(i+1) = b1000, Protocol T=1 |
| ---- | |
| TD(2) = 0xB1 | Y(i+1) = b1011, Protocol T=1 |
| ---- | |
| TA(3) = 0xFE | IFSC: 254 |
| TB(3) = 0x45 | Block Waiting Integer: 4 - Character Waiting Integer: 5 |
| TD(3) = 0x1F | Y(i+1) = b0001, Protocol T=15 |
| ---- | |
| TA(4) = 0x07 | Clock stop: not supported - Class accepted by the card: (3G) A 5V B 3V C 1.8V |
| ---- | |
| Historical bytes | 80 31 C1 52 11 18 |
| Category indicator byte: 0x80 | (compact TLV data object) Tag: 3, Len: 1 (card service data byte) Card service data byte: 193 - Application selection: by full DF name - Application selection: by partial DF name - EF.DIR and EF.ATR access services: by GET RECORD(s) command - Card without MF Tag: 5, Len: 2 (card issuer's data) Card issuer data: 11 18 ".." |
| TCK = 0xF9 | correct checksum |
Possibly identified card:
3B D6 97 00 81 B1 FE 45 1F 07 80 31 C1 52 11 18 F9
NASA Personal Identity Verification (PIV) card (eID)
IDEMIA Cosmo V8.0 with a PIV applet
The parsing code is part of pyscard and is available at parseATR.py.
The list of known ATR is also available online at smartcard_list.txt.
My blog contains a serie of artickes about ATR bytes.