The command 80 4c is set lockable mode which you use either to lock and
unlock your card or you set the personal code for the first time on a
non-locking card
The format of the command is as follows
 Cla 80
 ins 4C
 p1 00
 p2 00
 lc 05
 data 01 00 00 00 04
 le 00

Where the first byte of data sets the card from non-locking to unlocked and
next four bytes the code to set.
If the card is already locked then you also use the first byte as 1 to
unlock the card
To lock the card you use a 2 in the first byte.

If you want to change your personal code after first setting it for the
first and only time on a non-locking card (a card can only be non-locking
before a code has ever been set, the only way to turn a locked/unlocked card
into a non-locking card is to use the reset personal code command and to use
this you will need a pps card to obtain a signature) then you need to use
change personal code which is used as follows:

 Cla 80
 ins 48
 p1 00
 p2 00
 lc 08
 data 00 00 00 00 01 01 01 01
 le 00

where in this case 00 00 00 00 would be the old code and 01 01 01 01 would
be the new code.

Remember one thing though when you are setting codes such as 12345678 you
may find that you get a SW12 which is 9e17 which is invalid personal code
which means that simple codes are blocked as they are too simple to guess.

hope this helps.

Andrew

--
Andrew Whitaker
mailto:andrewttfn.net
www.ttfn.net
-----Original Message-----
From: Ana Lilian Becerra L. [mailto:abecerraBAENET.CL]
Sent: 31 August 2001 17:33
To: SmartCardSDKDISCUSS.MICROSOFT.COM
Subject: APDU and Visual basic (How I can setting a personal code .. )
Hi!
 I try the send a comand aPDU with API ScardServer  in visual Basic  The
command APDU is  (Setting a personal code)
my personal code in base decimal es 00000004
 Cla 80
 ins 4C
 p1 00
 p2 00
 lc 05
 data 00 00 00 04
 le 27
 in visual I send as:
 Dim InBuffer As String // memory space for our InBuffer
 Dim OutBuffer As String // memory space for our OutBuffer
 Dim InLen As Long
 Dim OutLen As Long
InBuffer = Chr(&H80) + Chr(&H4C) + Chr(&H0) + Chr(&H0) + Chr(&H5) + Chr(&H1)
+ Chr(0) + Chr(0) + Chr(0) + Chr(4)
     InLen = Len(InBuffer)
     OutLen = 200 // = enough space for OutBuffer
     OutBuffer = String(OutLen, 0) // Initialize OutBuffer, get memory
     L = SCardComand(0, "Card,APDU", 0, InBuffer, InLen, OutBuffer, OutLen)
its is correct !  :)
but I whish setting code as 12345678 (leng = 8)
I put
InBuffer = Chr(&H80) + Chr(&H4C) + Chr(&H0) + Chr(&H0) + Chr(&H5) + Chr(&H1)
+ Chr(12) + Chr(34) + Chr(56) + Chr(78)
but the code setting is it not 12345678 .. , when I check the personal code
it response me as " wrong code"
How  I can setting a personal code of leng  8 in my smart card mondex  ??
you can help me..
; )
thanks!

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