Sending data to the card in a byte array

Question

I am trying to store a variable dataCI[] with the data that comes into the buffer. I send this:
/send 0003000A0102030405
(INS=03)
Afterwards I want dataCI[] to have this value= "0102030405"
Here is my code. But when I am sending the bytes, it gives me an error of wrong length and does not matter how many bytes I send :/
DATA_LENGTH = 10;
lDate= apdu.setIncomingAndReceive();
if(lDate != DATA_LENGTH){
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
Util.arrayCopy(buffer, ISO7816.OFFSET_CDATA, dataCI, (short) 0, lDate);
return;
Also I tried with (lDate > DATA_LENGTH) and (lDate < DATA_LENGTH) but nothing works, it always gives me the error of wrong_length.
Can anybody tell me what am I doing wrong????                

Answer 1

Let's break down your apdu command....
"send 0003000A0102030405"
We agree that you are sending 5 bytes, so your Lc should = 5 not 0a
CLA = 00
INS = 03
P1 = 00
P2 = 0A <-- This should be your Lc !
Lc = 01 <--- This says there is 1 byte of data
CData = 02
Le = 03 <- This states there is 3 bytes coming back.
Lost in la la land data 04 05
So your command should read...
00 03 00 00 05 01 02 03 04 05;