ACOS5 Cryptographic Smart Card
3B
BE
??
00
00
41
05
00
00
00
00
00
00
00
00
00
00
90
00
mask: FFFF00FFFFFFFF80FFFFFFFFFFFFFFFFFFFFFF
33
Total reports
85%
Success rate
2013
First report
2022-05-18
Last report
ATR Analysis
ISO 7816-3 · local
Full analysis on smartcard-atr.apdu.fr ↗
Convention
direct
Protocol
T=0
Historical bytes
4105000000000000000000009000
Proprietary / unstructured
| # | Byte | Name | Description |
|---|---|---|---|
| 0 | 3B | TS | Direct convention (TS = 3B) |
| 1 | BE | T0 | Format byte: 14 historical bytes, Y1=0b1011 (TA1=present, TB1=present, TC1=absent, TD1=present) |
| 2 | ?? | TA1 | TA1: Fi=372, Di=RFU masked |
| 3 | 00 | TB1 | TB1: deprecated Vpp programming voltage parameter |
| 4 | 00 | TD1 | TD1: T=0 protocol indicator, Y2=0b0000 (TA2=absent, TB2=absent, TC2=absent, TD2=absent) |
| 5 | 41 | T1 | Historical byte 1 |
| 6 | 05 | T2 | Historical byte 2 |
| 7 | 00 | T3 | Historical byte 3 |
| 8 | 00 | T4 | Historical byte 4 |
| 9 | 00 | T5 | Historical byte 5 |
| 10 | 00 | T6 | Historical byte 6 |
| 11 | 00 | T7 | Historical byte 7 |
| 12 | 00 | T8 | Historical byte 8 |
| 13 | 00 | T9 | Historical byte 9 |
| 14 | 00 | T10 | Historical byte 10 |
| 15 | 00 | T11 | Historical byte 11 |
| 16 | 00 | T12 | Historical byte 12 |
| 17 | 90 | T13 | Historical byte 13 |
| 18 | 00 | T14 | Historical byte 14 |
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.