APDU Protocol Analyzer
ISO 7816 Command Decoder & Status Word Lookup
0 bytes
|
Invalid Hex String
APDU Header
CLA
00
ISO Standard
INS
A4
SELECT FILE
P1
04
-
P2
00
-
Command Body
Lc:
00
Length of data field (0 bytes)
Data:
...
ASCII: ...
Le:
00
Max expected response length (0 bytes)
Status Word (SW)
90 00
Normal Processing
Success
✨ AI Assistant Gemini 2.5 Flash
Ask about specific APDU commands or error codes.