Carta Nazionale dei Servizi (CardOS)
3B
FF
18
00
FF
C1
0A
31
FE
55
00
6B
05
08
C8
??
01
??
01
43
4E
53
10
31
80
??
mask: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00FF00FFFFFFFFFFFFFF00
5
Total reports
100%
Success rate
2012
First report
2013-03-07
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)
0xFF (special)
IFSC (TA3, T=1)
254 bytes
Waiting times (TB3, T=1)
CWI=5 (CWT=43 etu), BWI=5 (BWT≈11,427,840 etu)
Historical bytes
006B0508C8??01??01434E53103180
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 | FF | TC1 | TC1: extra guard time = 0xFF (T=1: CWT override) |
| 5 | C1 | TD1 | TD1: T=1 protocol indicator, Y2=0b1100 (TA2=absent, TB2=absent, TC2=present, TD2=present) |
| 6 | 0A | TC2 | TC2: work waiting time for T=0, Wi=10 |
| 7 | 31 | TD2 | TD2: T=1 protocol indicator, Y3=0b0011 (TA3=present, TB3=present, TC3=absent, TD3=absent) |
| 8 | FE | TA3 | TA3: IFSC=254 (max information field size for card) |
| 9 | 55 | TB3 | TB3: CWI=5 (CWT=43 etu), BWI=5 (BWT≈11,427,840 etu) |
| 10 | 00 | T1 | Historical byte 1 |
| 11 | 6B | T2 | Historical byte 2 |
| 12 | 05 | T3 | Historical byte 3 |
| 13 | 08 | T4 | Historical byte 4 |
| 14 | C8 | T5 | Historical byte 5 |
| 15 | ?? | T6 | Historical byte 6 masked |
| 16 | 01 | T7 | Historical byte 7 |
| 17 | ?? | T8 | Historical byte 8 masked |
| 18 | 01 | T9 | Historical byte 9 |
| 19 | 43 | T10 | Historical byte 10 |
| 20 | 4E | T11 | Historical byte 11 |
| 21 | 53 | T12 | Historical byte 12 |
| 22 | 10 | T13 | Historical byte 13 |
| 23 | 31 | T14 | Historical byte 14 |
| 24 | 80 | T15 | Historical byte 15 |
| 25 | ?? | TCK | Check byte: XOR(T0…TCK) = 18 → ✗ INVALID masked |
⚠ TCK check failed — ATR may be corrupted or masked
3 bytes are 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
Operating system compatibility
| OS | Architecture | Service pack | Reports | Success rate | |
|---|---|---|---|---|---|
| Windows Seven | x64 | Service Pack 1 | 5 |
100%
|
Details |