ASECard Crypto
3B
D6
??
00
81
B1
80
7D
1F
03
80
51
00
61
10
30
??
mask: FFFF00FFFFFFFFFFFFFFFFFFFFFFFFFF00
5
Total reports
100%
Success rate
2012
First report
2014-12-28
Last report
ATR Analysis
ISO 7816-3 · local
Full analysis on smartcard-atr.apdu.fr ↗
Convention
direct
Protocol
T=1
T=15
Guard time (TC1)
0 etu
IFSC (TA3, T=1)
3 bytes
Waiting times (TB3, T=1)
CWI=13 (CWT=8203 etu), BWI=7 (BWT≈45,711,360 etu)
Historical bytes
805100611030
COMPACT-TLV (category 0x80)
TCK checksum
✗ invalid
00
| # | Byte | Name | Description |
|---|---|---|---|
| 0 | 3B | TS | Direct convention (TS = 3B) |
| 1 | D6 | T0 | Format byte: 6 historical bytes, Y1=0b1101 (TA1=present, TB1=absent, TC1=present, TD1=present) |
| 2 | ?? | TA1 | TA1: Fi=372, Di=RFU masked |
| 3 | 00 | TC1 | TC1: extra guard time = 0 etu |
| 4 | 81 | TD1 | TD1: T=1 protocol indicator, Y2=0b1000 (TA2=absent, TB2=absent, TC2=absent, TD2=present) |
| 5 | B1 | TD2 | TD2: T=1 protocol indicator, Y3=0b1011 (TA3=present, TB3=present, TC3=absent, TD3=present) |
| 6 | 80 | TA3 | TA3: IFSC=128 (max information field size for card) |
| 7 | 7D | TB3 | TB3: CWI=13 (CWT=8203 etu), BWI=7 (BWT≈45,711,360 etu) |
| 8 | 1F | TD3 | TD3: T=15 protocol indicator, Y4=0b0001 (TA4=present, TB4=absent, TC4=absent, TD4=absent) |
| 9 | 03 | TA4 | TA4: IFSC=3 (max information field size for card) |
| 10 | 80 | T1 | Historical byte 1 |
| 11 | 51 | T2 | Historical byte 2 |
| 12 | 00 | T3 | Historical byte 3 |
| 13 | 61 | T4 | Historical byte 4 |
| 14 | 10 | T5 | Historical byte 5 |
| 15 | 30 | T6 | Historical byte 6 |
| 16 | ?? | TCK | Check byte: XOR(T0…TCK) = 97 → ✗ 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.