cv act sc/interface MD JCOP V2.4.1
3B
F8
10
00
??
81
31
FE
45
4A
43
4F
50
76
32
34
31
??
mask: FFFFF0FF00FFFFFFFFFFFFFFFFFFFFFFFF00
1
Total reports
100%
Success rate
2014
First report
2014-01-21
Last report
ATR Analysis
ISO 7816-3 · local
Full analysis on smartcard-atr.apdu.fr ↗
Convention
direct
Protocol
T=1
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
4A434F5076323431
Proprietary / unstructured
TCK checksum
✗ invalid
00
| # | Byte | Name | Description |
|---|---|---|---|
| 0 | 3B | TS | Direct convention (TS = 3B) |
| 1 | F8 | T0 | Format byte: 8 historical bytes, Y1=0b1111 (TA1=present, TB1=present, TC1=present, TD1=present) |
| 2 | 10 | TA1 | TA1: Fi=372, Di=RFU |
| 3 | 00 | TB1 | TB1: deprecated Vpp programming voltage parameter |
| 4 | ?? | TC1 | TC1: extra guard time = 0 etu masked |
| 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 | 4A | T1 | Historical byte 1 |
| 10 | 43 | T2 | Historical byte 2 |
| 11 | 4F | T3 | Historical byte 3 |
| 12 | 50 | T4 | Historical byte 4 |
| 13 | 76 | T5 | Historical byte 5 |
| 14 | 32 | T6 | Historical byte 6 |
| 15 | 34 | T7 | Historical byte 7 |
| 16 | 31 | T8 | Historical byte 8 |
| 17 | ?? | TCK | Check byte: XOR(T0…TCK) = B4 → ✗ INVALID masked |
⚠ TCK check failed — ATR may be corrupted or masked
2 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
| Software | Version | Reports | Success rate | |
|---|---|---|---|---|
| EIDAuthenticate | 1.0.1.0 |
1 |
100%
|
Details |
Operating system compatibility
| OS | Architecture | Service pack | Reports | Success rate | |
|---|---|---|---|---|---|
| Windows Server 2008 R2 | x64 | Service Pack 1 | 1 |
100%
|
Details |
Provider / middleware compatibility
| Provider | DLL | Version | Company | Reports | Success rate | |
|---|---|---|---|---|---|---|
| Microsoft Base Smart Card Crypto Provider | cvMD.dll |
2.0.4.215 |
cv cryptovision GmbH | 1 |
100%
|
Details |