CODEWITHSUNDEEP
javaandroidsmartcardapdu
kmno
kmno

Reputation: 85

Smartcard verify pin apdu command problem in android

I'm working on an android pos device. when I inserted the smart card and run the following command it gives me 9000 response and works fine :

00 A4 00 00 08 610433BE00010001

CLA/INS/P1/P2/Lc/DATA

but when I want to send pin verification command :

00 20 00 00 02 80 12 (the pin is 8012 for example)

It give me 6D00 error, which means the command not supported.

what's wrong with this command?

Upvotes: 3

Views: 761

Answers (2)

uummuuttss
uummuuttss

Reputation: 1

You should send this APDU command to verify your pin:

00 20 00 00 04 38 30 31 32 instead of 00 20 00 00 02 80 12

04 => 4 bytes

38 => Hex of integer value of 8
30 => Hex of integer value of 0
31 => Hex of integer value of 1
32 => Hex of integer value of 2

and of course result should be 9000

Upvotes: 0

kmno
kmno

Reputation: 85

I found the solution. every apdu command needs to transmit step by step, for example:

select applet > check pin verify > get card registration info

"before run any command on smartcard, i need to run select applet first!"

Upvotes: 1

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