Idemia COSMO v9
3B
FF
18
00
00
81
31
FE
45
00
6B
05
05
20
00
01
01
01
43
4E
53
10
31
80
??
mask: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0FFFFFFFFFFFFFFF00
0
Total reports
0%
Success rate
—
First report
—
Last report
ATR Analysis
ISO 7816-3 · local
Full analysis on smartcard-atr.apdu.fr ↗
Convention
direct
Protocol
T=1
Baud rate (TA1)
Fi=372, Di=12, fmax=4MHz, 31.00 cycles/ETU
Guard time (TC1)
0 etu
IFSC (TA3, T=1)
254 bytes
Waiting times (TB3, T=1)
CWI=5 (CWT=43 etu), BWI=4 (BWT≈5,713,920 etu)
Historical bytes
006B05052000010101434E53103180
COMPACT-TLV (ISO 7816-4, category 0x00)
TCK checksum
✗ invalid
00
| # | Byte | Name | Description |
|---|---|---|---|
| 0 | 3B | TS | Direct convention (TS = 3B) |
| 1 | FF | T0 | Format byte: 15 historical bytes, Y1=0b1111 (TA1=present, TB1=present, TC1=present, TD1=present) |
| 2 | 18 | TA1 | TA1: Fi=372, Di=12 → 31 cycles/ETU at 5MHz |
| 3 | 00 | TB1 | TB1: deprecated Vpp programming voltage parameter |
| 4 | 00 | TC1 | TC1: extra guard time = 0 etu |
| 5 | 81 | TD1 | TD1: T=1 protocol indicator, Y2=0b1000 (TA2=absent, TB2=absent, TC2=absent, TD2=present) |
| 6 | 31 | TD2 | TD2: T=1 protocol indicator, Y3=0b0011 (TA3=present, TB3=present, TC3=absent, TD3=absent) |
| 7 | FE | TA3 | TA3: IFSC=254 (max information field size for card) |
| 8 | 45 | TB3 | TB3: CWI=5 (CWT=43 etu), BWI=4 (BWT≈5,713,920 etu) |
| 9 | 00 | T1 | Historical byte 1 |
| 10 | 6B | T2 | Historical byte 2 |
| 11 | 05 | T3 | Historical byte 3 |
| 12 | 05 | T4 | Historical byte 4 |
| 13 | 20 | T5 | Historical byte 5 |
| 14 | 00 | T6 | Historical byte 6 |
| 15 | 01 | T7 | Historical byte 7 |
| 16 | 01 | T8 | Historical byte 8 |
| 17 | 01 | T9 | Historical byte 9 |
| 18 | 43 | T10 | Historical byte 10 |
| 19 | 4E | T11 | Historical byte 11 |
| 20 | 53 | T12 | Historical byte 12 |
| 21 | 10 | T13 | Historical byte 13 |
| 22 | 31 | T14 | Historical byte 14 |
| 23 | 80 | T15 | Historical byte 15 |
| 24 | ?? | TCK | Check byte: XOR(T0…TCK) = 59 → ✗ INVALID masked |
⚠ TCK check failed — ATR may be corrupted or masked
1 byte is shown as ?? because the ATRMask at those positions is 00 —
these bits are variable across card instances and were not recorded. The analysis above is based on the known bytes only.
Use smartcard-atr.apdu.fr with your card's real ATR for a complete decode.
Software compatibility
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Operating system compatibility
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Provider / middleware compatibility
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